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January 29, 2021, 12:27 PM #1
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Could it be I don't care for Class A
Going back to my Pass X250, I enjoyed that amp and the sound, however, moved to Levinson liking the sharper leading edges and quicker response better.
There are characters of the Coda 8 that are better than my Levinson, more intelligible vocals and better detail in some aspects overall, it's just as fast, yet there is something I still likeabout listening to the Levinson better. The Coda has such a quiet background you'd have to hear it to believe.
I am mad at myself it takes me so long to figure these things out, now I am not able to return the 8. I'm going to try to get $5k back out of it, not even 120 days yet.
The real mystery to me is what is it I can't fully enjoy the 8, it's a great amp by anyone's standards. The 8 version I have is Class A for the first 12 watts, I'm wondering if I have an issue that I am one who may not prfer Class A. I don't like overly aggressive amps either. I guess we all have our sweet spot.
I also listen to a wide variety of music so amps that may excel on certain genres would present an issue for me.Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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January 29, 2021, 12:51 PM #2
Re: Could it be I don't care for Class A
For those of us old enough to remember, the original Mr. Peabody had something called a Wayback Machine for time travel. Pretty sure that could solve the problem.
Just having a little fun, I don’t mean to belittle your problem. I hope you’re able to find a good solution.Gary
Main: Lumin A1, Accuphase E-650, Tannoy Canterbury GR, Shunyata, Audience
Secondary: Lumin M1, Linton Heritage, Shunyata, Audience
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January 29, 2021, 01:53 PM #3
Re: Could it be I don't care for Class A
Even the Pass AB amps have some class A output. The X250.8 leaves class A at about 16 watts according to the spec sheets.
https://www.passlabs.com/wp-content/...t8_specs_6.pdfFleetwood Deville by Oswald Mills Audio, Vienna Acoustics Haydn Jubilee, Wharfedale Linton w/ stands, Klipsch RB-75, Klipsch RP-160M.
Job INTegrated. Luxman L-595aSE
NAD C 658 streamer.
First Watt SIT-3, Job 250 Monos, NuForce STA200, AkitikA GT-102 amp, ASL Wave monos, Dennis Had 45 monos. Absolute Audio Labs PCF 25 amp (improved First Watt F7 super clone)
Topping D90, RME Audio ADI-2 DAC FS, ModWright Ultimate Sony XA-5400ES.
Burmester 948, McIntosh MCLK12, Kimber Kable, Siltech, Cardas, Avanti Audio cables.
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January 29, 2021, 02:41 PM #4
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Re: Could it be I don't care for Class A
Having heard your Levinson/JBL set up I am somewhat familiar with that sonic presentation.
Reading your many post, it is clear that your taste runs more towards the accurate than the romantic.
I have found class A to offer a somewhat sweeter and more mid hall presentation. More similar to tubes.
And I can see where this Coda amp is a deviation from your preferred voicing.
I had a Coda amp a while back and sent it back to the factory to have the bias adjusted, making it a little more dynamic. It did help
but overall it was not a keeper in my system.
Hope you can get out of this without too much pain.My System
Acoustic Revive RTP-4
Innuos Pulsar
Lampizator BALTIC4
Cary SLP-05
Pass XA30.5 or
Line Magnetic 845ia
Reference 3A Reflector's
Pr SVS SB3000 Subs
Cables & Tubes "subject to change without notification".
Complete system on battery power/solar
Core Audio Design Rack
DIY bass traps and custom curved diffusors.
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January 29, 2021, 04:04 PM #5
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Re: Could it be I don't care for Class A
Gary, the Wayback would certainly fix things.
Joe, I probably didn't explain myself well enough. I knew the Pass was Class A up to a point, I was trying to show I moved on from the Pass to the 532h, some Class A to an amp with very little.
Dave,I suspect you nailed it. Liking a more accurate amp and keeping with one that won't offend leaves a narrow field. Or, high price tag, LOLAurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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January 29, 2021, 04:41 PM #6
Re: Could it be I don't care for Class A
Ah, yes, sorry I misunderstood.
Sorry you aren’t crazy about the Coda.Fleetwood Deville by Oswald Mills Audio, Vienna Acoustics Haydn Jubilee, Wharfedale Linton w/ stands, Klipsch RB-75, Klipsch RP-160M.
Job INTegrated. Luxman L-595aSE
NAD C 658 streamer.
First Watt SIT-3, Job 250 Monos, NuForce STA200, AkitikA GT-102 amp, ASL Wave monos, Dennis Had 45 monos. Absolute Audio Labs PCF 25 amp (improved First Watt F7 super clone)
Topping D90, RME Audio ADI-2 DAC FS, ModWright Ultimate Sony XA-5400ES.
Burmester 948, McIntosh MCLK12, Kimber Kable, Siltech, Cardas, Avanti Audio cables.
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January 29, 2021, 07:54 PM #7
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Re: Could it be I don't care for Class A
Wow, that chart showing the 250.8 to leave Class A contradicts other reported spec's stating it runs in Class A for the first 25 wpc.
Mr. P., I have wrestled with do I want a very detailed system or one a little more rounded like my X250. It is a trade off for sure. On well recorded music, I like the extra detail but in the long run I find the Pass sound more listenable over a long period of time. I guess you can get a little extra detail with a DAC and/or preamp. The type of music player also plays a role. I use Audirvana or Hysolid for general listening and ease of use but for critical listening I go back to the the pain in the ass to use BugHead which sounds fabulous and detailed and is very tunable. As I have gotten older my tastes are for excellent tone and a romantic midrange vs extreme detail.
My son is dealing with the same issue. He recently bought a Cary SI-300.2d integrated which sounds fabulous by the way but at RMAF last year he heard the Primare Prisma I35 integrated which was hyper detailed and now wonders if he made a mistake.My Gear- Mains System-Pass X250 amp, BAT VK-51se preamp, Luxman DA-06 DAC, Magnepan 1.6's, Thorens TD-145 TT, Dual Martin Logan Subs, Vintage Luxman T-110 Tuner, Cables-WW Platinum 7 USB, Cardas Parsec XLR, AQ Columbia DBS 72v XLR, Belden 8402 XLR.
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January 30, 2021, 07:30 AM #8
Re: Could it be I don't care for Class A
I think I agree with you, although my experience of Class A amps stretches to just 2.
The Sugden Masterclass FPA-4 and Accuphase A-36. The former was a non-starter but the Accuphase is a wonderful amp that I kept for a couple of years before deciding that it was a little less involving or exciting than what I was looking for in an amp.
Amongst many A/B amps I've tried over the last couple of years, the new Mark Levinson 5805 was very civilised and nice sounding but I passed on that in the end. I found the GamuT D200 Mk III a better listen but sadly is was far too uncivilised in that it had no speaker protection relays so gave my 107dB speakers a most unwelcome thump on power up and down.Sources - NAD M50.2 (streamer, CD player, CD ripper, hard drive music store)
Amplification - NAD M33 all-in-one, NAD M12 preamp (in reserve), Atma-Sphere Class D monos
Speakers - Avantgarde Duo XD, Avantgarde Duo (2006) - both aesthetically modified
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January 30, 2021, 10:57 AM #9
Re: Could it be I don't care for Class A
might not be helpful to your situation, but two thoughts that occurred to me:
sometimes my listening preferences/impressions are time and mood dependent... maybe give it a few weeks and switch the coda 8 back into your system and see if you still feel the same?
also, not to open up another rabbit hole but if you would like to keep the coda 8 for it's properties that you like then maybe a tube pre-amp would get you where you need to be in terms the overall sound having the right amount of politeness?viking acoustics berlin r mk2 | almarro a318b + air tight atc-5 (phono) | clearaudio concept + virtuoso v2 MM | t+a dac8 dsd + diy transport + roon rock
alp-tone audio analog cables | core audio designs plyKraft 3L | hifi racks ltd podium t5-iii
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January 30, 2021, 11:35 AM #10
Re: Could it be I don't care for Class A
Hi, Mechnutt. I see this post is quite awhile ago but the issue or "detail" versus "round" has been quite relevant for me recently. Reading the objectivist hype over at Audio Science Review I decided to try Purifi 1ET400A-based amp. I also decided to sell my Pass Labs X150.5 having owned and enjoyed it for several years.
Well, the Purifi is a champion of resolution, transparency, and dynamics and the expense of being stone cold and highly intolerant of 2nd rate recordings. See my review at Audio Asylum ... REVIEW: VTV Amplifier Purifi 1ET400A Stereo Amplifier (SS) - Feanor - Amp/Preamp Asylum
My dilema today is whether I ought to retreat to a "rounder" sounding amp or take some other measure to mitigate the coldness of the Purifi. I have tried my Schiit Freya + preamp in Tube v. Passive Mode: this did "round" the presentation a bit plus offered tubes' "holographic" sound. However I quickly found myself missing the full transparency of the straight Purifi. So I'm still wondering what's to do?~ Bill
Win10/Foobar2000 => Topping D90 DAC => Sonic Frontiers Line 1 SE+ preamp => VTV Purifi 1ET400A stereo amp with Sparkos SS3602 op amps => Zaph Audio ZRT speakers (DIY) + PSB Subsonic 5 subwoofer
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January 30, 2021, 12:01 PM #11
Re: Could it be I don't care for Class A
My amp (NAD M33) has the latest Purifi Eigentakt module but I wouldn't describe it as "stone cold". Granted it isn't warm like a valve amp, but neither is it cold. For me it offers a good balance with the feeling of the music being "live" rather more than most amps. You describe your amp as being Purifi 1ET400A-based . I thought 1ET400 was a Hypex module, but I'm not expert in these matters.
Sources - NAD M50.2 (streamer, CD player, CD ripper, hard drive music store)
Amplification - NAD M33 all-in-one, NAD M12 preamp (in reserve), Atma-Sphere Class D monos
Speakers - Avantgarde Duo XD, Avantgarde Duo (2006) - both aesthetically modified
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January 30, 2021, 12:10 PM #12
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Re: Could it be I don't care for Class A
As Nelson has written about, I think some people prefer 3rd harmonic over 2nd harmonic distortion (ie. me).
For instance, I don't prefer SET amps - I owned a half dozen of them in my Zu days and this was re-confirmed to a lesser extent with a friend's SIT-3 recently.Brinkmann Bardo w/ EMT HSD-006 cart, MSB Reference DAC --> Linear Tube Audio MicroZOTL --> Ampzilla 2000, 2nd Edition --> Fyne Audio F1-12
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January 30, 2021, 12:25 PM #13
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Re: Could it be I don't care for Class A
I run Pass Labs X260.8s monos. They are Class A to 34 watts, then Class A/B. They are absolutely wonderful. If I ever decide upon my new system (COVID listening delays), it could easily include some Pass X600.8s - 100 watts of Class A, then Class A/B.
For me personally, this gives me the best of both worlds - excellent sound without too much heat. Most Class A amps run too hot for me here in FL, but Class A/B run warm, not hot.
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January 30, 2021, 12:56 PM #14
Re: Could it be I don't care for Class A
it would take a person with an incredibly acute hearing ability to discern when an amp output stage slides from A to AB while playing program material (IMO its plain BS). I'm agnostic re class of operation, its the SQ that matters most when driving my particular speaker of choice. There are good and bad implementations of Class A design as all the other classes including D.
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January 30, 2021, 01:16 PM #15
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Re: Could it be I don't care for Class A
I don't recall anyone stating they could hear the slide from Class A to B. However, having more Class A bias does effect the sound of the amp overall. As Pass states on their website, "Like all of the class A/B .8's, this amplifier has some class A bias, rewarding its listeners with a whole new zenith of sound quality."
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January 30, 2021, 02:17 PM #16
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Re: Could it be I don't care for Class A
Brinkmann Bardo w/ EMT HSD-006 cart, MSB Reference DAC --> Linear Tube Audio MicroZOTL --> Ampzilla 2000, 2nd Edition --> Fyne Audio F1-12
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January 30, 2021, 02:34 PM #17
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Re: Could it be I don't care for Class A
I've never run a 350.8, but I've heard that the 250.8s run a little warmer than the 260.8s. Uncomfortably warm wouldn't be good for me either - Of course there's a lot of variables to consider such as room size, etc.
I was talked out of XA200.8s and XA160.8s (Class A) because they get HOT. According to a dealer the 600s about the same temp as the 260.8s. But the Boulder 2150s (Class A) run about the same as the Pass 260s (A/B).
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January 30, 2021, 03:02 PM #18
Re: Could it be I don't care for Class A
As an owner of the X260.8's I disagree. Two reasons, first the 260.8 is a mono amp, thus I have two of them and the 250.8 is a stereo amp. Secondly, the 260.8's have the highest amount of initial Class A bias(save the mighty 600) of any of the Pass A/B amps.
so therefore it's highly unlikely the 250 would run warmer.Cheers ! …. Dave
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January 30, 2021, 03:12 PM #19
Re: Could it be I don't care for Class A
The 1ET400A is indeed Purifi, not Hypex; it's really just another name for the Eigentakt.
By the way, the NAD M33 is very impressive in its capabilities.
That Purifi module is usually coupled to some sort of input buffer that provide a some extra gain. The point is that this buffer can color the sound to some extent. The buffer usually include an op amp but might used a discrete circuit to provide this gain. My VTV amp uses a VTV buffer with at Sparkos SS3062 op amp, while NAD uses its own, proprietary buffer, so it's possible that my amp and your NAD could sound subtly different.
In any case, I misspoke describing the Purifi as "stone cold": the phrase has too negative a connotation. Rather I should simply have said it that it's not warm.~ Bill
Win10/Foobar2000 => Topping D90 DAC => Sonic Frontiers Line 1 SE+ preamp => VTV Purifi 1ET400A stereo amp with Sparkos SS3602 op amps => Zaph Audio ZRT speakers (DIY) + PSB Subsonic 5 subwoofer
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January 30, 2021, 03:55 PM #20
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Re: Could it be I don't care for Class A
Interesting. Again, my statement was based upon what I've heard by Pass users in the forums.
From what I understand with the monos you have a greater overall surface area to help dissipate the heat better. 250.8 (19 x 21.25 x 9) as compared to the 260.8s (19 x 21.25 x 7.5 - *** times two). Everything in the 250.8 is stuck into one box, so wouldn't it feel and run hotter?
There's only 9 Class A watts difference between the the 250.8 and 260.8. I'm not sure we could tell the heat difference from 9 watts. And the 600s, which have app. triple the Class A watts of the 260s allegedly run about the same temp as the 260.8s. But they also have a larger chassis (19 x 21.5 x 11 - *** times two).
A question: Would the Power Consumption of both amps make a difference in heat? 250.8 - 450 watts vs the 260.8 at 375 watts.
IMO, the smaller surface area of a 250.8 may make it feel and run warmer.
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January 30, 2021, 04:31 PM #21
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Re: Could it be I don't care for Class A
I may have given the wrong impression of the 8. It could also be wrong of me to stereotype Class A sound.
I did some more listening today, amp swapping. I stayed withsome favorite Traffic songs which was interestingly really good for the comparison.
The 8 is just as quic as the 532h and I don't get rounded edges from the 8, in fact, drums were snappy and the bass lines cleaner. The 532h spreads the sound stage out more. The 8 in most aspects provides the most detail. There is just an undeniable synergy between the two Levinson pieces. Or, perhaps the 8 prefers a different preamp. My friend who replaced his Krell KSA-250 with an 8 also has the Coda 07x preamp. I unfortunately have not been able to check his rig out yet.
I would rather try to sell the 8 opposed to changing my system, another preamp etc.
I don't think it's Class A of the 8 as much as the tonal character of my system with it in. I can't explain that except it is. Keep in mind I sold a new 50.2 for similar reasons. Similar, for lack of a better word, what was the same I just didn't care for the sound I was getting with it in my system. The 8 is more like it's really good but not to my taste.Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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January 30, 2021, 04:36 PM #22
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Re: Could it be I don't care for Class A
Calvin have you heard both Pass and Boulder? From the Boulder I've heard the brands have very different presentations. In fact, I was surprised to learn Boulder was Class A.
I just wondered what your impressions were of the two. Or, anyone else who may have heard both.Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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January 30, 2021, 04:47 PM #23
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Re: Could it be I don't care for Class A
I haven't heard the Boulder yet, only spoken about them with Mike who has me seriously considering the 2150s. It and the MSBs are on my Post-COVID List to listen too.
A friend who lives about a mile away and posts on this forum just purchased a Boulder stereo amp. He also owns(ed) Pass and Audio Research amps. He has a keen ear and doesn't purchase anything lightly. Unfortunately, he won't have it hooked up until next month when Mike delivers him some new speakers. What a system he will have!!!
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January 30, 2021, 06:28 PM #24
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Re: Could it be I don't care for Class A
Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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January 30, 2021, 08:43 PM #25
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Re: Could it be I don't care for Class A
Hi Bill,
You may want to consider a Pass 0.8 series amp which is a different animal from the 0.5 series. Great transparency and sound stage but not sterile sounding. Based on the reviews it may be what you are looking for without sacrificing detail. Another option is to try a Prima Luna tube preamp. Also, a DAC like an Aqua La Voce or an original Chord Hugo may give you what you are looking for.My Gear- Mains System-Pass X250 amp, BAT VK-51se preamp, Luxman DA-06 DAC, Magnepan 1.6's, Thorens TD-145 TT, Dual Martin Logan Subs, Vintage Luxman T-110 Tuner, Cables-WW Platinum 7 USB, Cardas Parsec XLR, AQ Columbia DBS 72v XLR, Belden 8402 XLR.
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January 30, 2021, 10:46 PM #26
Re: Could it be I don't care for Class A
the initial Class A bias of the 260's is actually 18 watts greater than that of the 250. Remember, a Class A amp at idle has but one way to dissipate it's energy, through heat for there is no load being driven. Regardless I do not consider the 260's to be a major issue, is it noticeable in the summer time, yes, but not a deal breaker IMO.
Cheers ! …. Dave
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January 30, 2021, 11:13 PM #27
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January 31, 2021, 11:05 AM #28
Re: Could it be I don't care for Class A
Are you sure your system didn't take a backwards turn in SQ when you swapped out your Magnapan speakers for kit speakers you installed in a kit cabinet that was less than optimum in volume for the woofer used as well as replacing your Pass X150.5 amp with a cheaper priced Class D amp?
Micro Seiki SX-8000 air bearing table, SME 312s arm, SME 3012R arn, Dynavector XV-1s cartridge, Lyra Etna SL cartridge, ARC Ref 3 phono stage, Otari MX-55 2 track R2R, Ampex 350 tape repros, Roon Nucleus Plus music server, HiFi Rose 150B DAC, ARC Ref 6, ARC Ref 75 with KT-150s, Parasound JC5 amp , JBL 4345 speakers, Viero Equilibro Level 3 speaker cables, and Definitive Technology Ref subs.
Reviewer for Positive Feedback
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January 31, 2021, 11:45 AM #29
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Re: Could it be I don't care for Class A
Larry, the Cary and Primare are opposite ends of the spectrum. What made your son decide to sell the A21? If he feels Cary is too warm I'd recommend something not as Primare, maybe small step that direction. I've not heard any current Primare but their gear came off as a bit edgy sounding to me. We used to have a Primare dealer so I've tried some of the gear and had one of their processors. Of course some balance could be gained by system matching I suppose. I was using Dynaudio at the time I played with Primare so those aren't overly bright speakers.
Bill, have you looked at the Schitt Alger power amp? Maybe misspelled. A friend bought two and tried as monoblocks, he loved the sound but they couldn't push his speakers. May be an option if your speakers are efficient. Larry had pretty good experience building a Pass preamp from a kit, that may be an option as well to keep good sound while adding a touch of warmth.Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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January 31, 2021, 01:43 PM #30
Re: Could it be I don't care for Class A
Thanks Bill. According to NAD, they worked with Purifi on the Eigentakt module and make it themselves rather than buy the standard unit off-the-shelf. They say:
"NAD’s renowned designers worked closely with Purifi Audio to customise the Eigentakt implementation to ensure every product featuring the technology would meet the high standards NAD is known for. For this reason, NAD manufactures its own Eigentakt modules rather than buy off-the-shelf. Eigentakt is a once-in-a-decade amplifier innovation that will define the pinnacle of power and performance for years to come. It’s not often that such novel audiophile technology is made available with so much value packed in."
How different the NAD version is compared with the off-the-shelf version I don't know but the output of NAD's M33 is quoted as 200 / 380 watts compaed with the 1ET400A's spec of ??? / 425 watts. Perhaps NAD found that de-powering improved the sound quality.
However, you can bet your boots that NAD will be looking to find an even better amp module long before the "once-in-a-decade" period has ended! I'm sure the M34 is less than a decade away!
For the time being, I'm happy with the M33 - as I was for a few years with its predecessor the Direct Digital based M32. Both great amps of exceptional value.
PeterSources - NAD M50.2 (streamer, CD player, CD ripper, hard drive music store)
Amplification - NAD M33 all-in-one, NAD M12 preamp (in reserve), Atma-Sphere Class D monos
Speakers - Avantgarde Duo XD, Avantgarde Duo (2006) - both aesthetically modified
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January 31, 2021, 02:05 PM #31
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Re: Could it be I don't care for Class A
My son really likes the Cary. It is not too warm but it does not have that very crisp attack and extreme detail that the Primare has. The Cary has a lot of detail and a rich full bodied sound with a huge sound stage and great dynamics. It really is a great integrated. The Primare is just different with more detail, resolution and transparency. He is just second guessing himself because we thought that the Primare-Wharfedale room with the new Evo 4.4 speakers (which he ended up buying and are a truly remarkable speaker at its price and out performs speaker costing twice as much) at RMAF was one of the better sounding rooms at the show.
He sold the A21 because he needed a new DAC and preamp and wanted a more audiophile sound. The Cary fits the bill and then some.My Gear- Mains System-Pass X250 amp, BAT VK-51se preamp, Luxman DA-06 DAC, Magnepan 1.6's, Thorens TD-145 TT, Dual Martin Logan Subs, Vintage Luxman T-110 Tuner, Cables-WW Platinum 7 USB, Cardas Parsec XLR, AQ Columbia DBS 72v XLR, Belden 8402 XLR.
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February 1, 2021, 10:08 AM #32
Re: Could it be I don't care for Class A
had a beautiful class A amp here , absolutely stunning with my tannoys but with my horns it was too much for my ears !! i guess it all depends on synergy with the speakers !!
1]bel canto EIX/ F5 monoblocks . BC cd2, tannoy eaton legacy 2]bel canto pre 5 ,arcam a85 , black ice modded dac
modded dac , marantz sa8005, Verity audio Rienzi
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February 1, 2021, 10:04 PM #33
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February 1, 2021, 10:08 PM #34
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February 2, 2021, 11:54 AM #35
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Re: Could it be I don't care for Class A
I'm not sure, Levinson to my knowledge has never published that but I suspect very little.
I've never been able to detect the slide from classs A to A/B. Maybe I've not driven any of the amps that hard orjust don't know what to listen for. Unless the A/B had a high distortion rating I don't see how anyone could hear the transition. The power draw would vary depending on demand, if the transition was audible can you imagine the volume being on the threshold where the amp switched back and forth several times a song?
Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
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February 8, 2021, 01:39 PM #36
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Re: Could it be I don't care for Class A
I have owned a ton of equipment as I like buying new stuff and seeing if I can make it work in my system. I also limit the amount I can spend on each purchase so I can try more stuff. That said, I have quite an inventory of cables so I can change the sound to my liking. Only once have I not been happy with my system when adding a new component (which was just recently). Why not take advantage of The Cable Company's loan program and try different cables with the Coda? It will probably be a bit cheaper to tune with cables than tune with components.
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February 25, 2021, 03:57 PM #37
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Re: Could it be I don't care for Class A
Perhaps Class D?
I run a pair of JBL 4365 monitors in a second system powered by Marantz PM-10 (and a SA-10 cdp). I find it enjoyable.
Of course some think of Marantz as low brow.......not me.
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February 25, 2021, 04:55 PM #38
Re: Could it be I don't care for Class A
Most likely your only leaving class A on dynamic peaks if it was avg din outside of class A you would notice it most likely in the top end. Also heatsinks temps affects the slide if too hot they will stay out of class A meaning you wont notice anything as its permanently outside of class A.
This is worst case scenario thou , amp would have to be roasting the heat sinks with high temps, if so most likely there would be no class A Bias , which could be what you are hearing as oppose to more class A bias ..
Regards
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February 25, 2021, 05:34 PM #39
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February 25, 2021, 05:58 PM #40
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- St. Louis, MO, USA
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Re: Could it be I don't care for Class A
Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
-
February 25, 2021, 06:04 PM #41
- Join Date
- Nov 2013
- Location
- St. Louis, MO, USA
- Posts
- 3,081
Re: Could it be I don't care for Class A
Aurender ACS10 w/Audioquest Diamond USB, Esoteric N05xd
Mark Levinson #526, 534 & JBL 4367's
Clearaudio Performance DC w/Maestro cart
Clarus Concerto & their Crimson cables
HT: Marantz AV8003, Linn 5125, JBL SAM3ha, Revel s30,
SVS PC13 Ultra
Transparent, Analysis Plus & Tributaries. PS Audio filtering
Sony XBR-75X940D & BDP
Parasound P6, MBL 8006b, Artisan speakers/subwoofer
-
February 26, 2021, 12:53 PM #42
Re: Could it be I don't care for Class A
I miss stated its total not per channel , specs says 85W quiescent draw ..
Mark Levinson No.532H power amplifier Specifications | Stereophile.com
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February 26, 2021, 01:24 PM #43
Re: Could it be I don't care for Class A
The buffer is by design, this module will have OEM applications. It allows mfr to develop their own buffer stage (16 db) and power supply to give it their own signature sound. I would think a tube-based or fully discrete buffer module and linear instead of a switch mode PS would also contribute positively to the SQ. Im watching a few projects on the web that are underway using the Purifi modules and different buffers.
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March 2, 2021, 05:57 PM #44
Re: Could it be I don't care for Class A
The correct answer is No. But that is only because none of the amps you've listed are class A. If they are class A, its to full power, not 12 watts or anything like that. IOW you're describing AB amps that you don't like as opposed to other AB amps that you do. Some are biased more heavily than others but that is very different from actually being class A. For fun maybe see if you can borrow a real class A amp and see if you still feel that way.
FWIW though the differences we hear in amps usually are not about the class of operation. Its about the distortion they do or do not make.
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The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
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