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Thread: Class-D amps

  1. #1
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    Class-D amps

    The other day I removed the REF250's from the mid/highs and tried just my ARC DS450M's on my speakers and it was a real different sound. Tight, punchy, with a sharp definition, but with a rather flat soundstage. I wasn't entirely sure I liked it....it was different from the beautiful slight bloomy midrange I'm used to and musicality of tubes.

    I certainly like the gobs of power and small foot print of Class-D. It has lots of potential. It got me to thinking.....are there any good Class-D amps out there or even any Class-D hybrid amps anyone has heard and liked?

    NuForce
    BelCanto
    Anthem
    Rogue
    ARC
    ....others?
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  2. #2
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    Re: Class-D amps

    I am really enjoying my spectron musician 3, which I got for my Gallos but like even more through my Zu Omens. 600W into 8 ohms! Nice to have that headroom and pulls just 60w when idle, very efficient.
    Ron

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  3. #3

    Re: Class-D amps

    Quote Originally Posted by Mike View Post
    The other day I removed the REF250's from the mid/highs and tried just my ARC DS450M's on my speakers and it was a real different sound. Tight, punchy, with a sharp definition, but with a rather flat soundstage. I wasn't entirely sure I liked it....it was different from the beautiful slight bloomy midrange I'm used to and musicality of tubes.

    I certainly like the gobs of power and small foot print of Class-D. It has lots of potential. It got me to thinking.....are there any good Class-D amps out there or even any Class-D hybrid amps anyone has heard and liked?

    NuForce
    BelCanto
    Anthem
    Rogue
    ARC
    ....others?
    I've tried the Ice amps via Bel Canto and Wyred 4 Sound. Devialet's Hybrid Class A and D and most recently a DIY Ncore amplifier. Of those I preferred the Ncore the most but would still prefer a well implemented Class A or Class A/B amplifier.

  4. #4
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    Re: Class-D amps

    Mike, I had a Wyred amp that I ran direct to their DAC2 for awhile. While I could appreciate the coolness factor, as in cool to the touch, and the fact that it drew very little electricity, it just didn't have the musical features that I like. The beautiful midrange and sparkle you get from tubes just wasn't there. I don't think that Class-D is there yet to compete with A or AB.
    Doug



  5. #5
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    Re: Class-D amps

    I've been saying this for a while, tube pre plus class D is a great mix. The control of class D plus the euphorics from a tube pre give you the best of both worlds, IMO of course.


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  6. #6
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    Re: Class-D amps

    Thanks. I'm wondering about brands. Has any one company got a lead on Class-D technology?

    NuForce perhaps?

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  7. #7

    Re: Class-D amps

    I've heard the Merrill Audio Veritas Monos and both times they had a huge soundstage, seemed very fast, but a bit lean for my taste. Could have been more the speakers than the amp - hard to tell.

    I think Nick (veindoc) tried the twins (stereo version) on his TADs. Maybe he will chime in.


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  8. #8
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    Re: Class-D amps

    Are the TAD amps Class-D or am I thinking of something else?
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  9. #9
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    Re: Class-D amps

    If Anthem ever irons out the bugs of the M1's, they could be a home run. Unlimited power! 2000 watts/channel into 4ohms.

    And reasonably priced too!
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  10. #10

    Re: Class-D amps

    Quote Originally Posted by Mike View Post
    Are the TAD amps Class-D or am I thinking of something else?
    One of the TADs is Class D, but forget which one.

    The prior generation of Rowland amps are also class D, I think including the Continuum integrated.


    Allen

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  11. #11
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    Re: Class-D amps

    I'm very pleased with Arion amp. RS-250.
    To me Arion amp does sound smoother than NCore.
    RS-250 Spec.
    Trung

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  12. #12
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    Re: Class-D amps

    It's such a different sound. Very hard to put your finger on it exactly. The DS450M's on just the bass is excellent. Not sure I like them anywhere else.

    But it did get me thinking about advancements in Class-D and who is the present day leader.
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  13. #13
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    Re: Class-D amps

    I've heard a few and I liked the Merrill's a lot, but with a tubed front end (something like a Dude would be great I think). They are not cheap though. All class D is not created equal and the progression toward better sound is changing rapidly. The last gen class D's can't stand up to the current, newer ones.
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  14. #14
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    Re: Class-D amps

    Quote Originally Posted by BobM View Post
    I've heard a few and I liked the Merrill's a lot, but with a tubed front end (something like a Dude would be great I think). They are not cheap though. All class D is not created equal and the progression toward better sound is changing rapidly. The last gen class D's can't stand up to the current, newer ones.
    Thanks Bob. That's exactly what I'm thinking. Class-D is also ripe for combining with a preamp and DAC - all-in-one. It's certainly is interesting and perhaps the future.

    I actually remember when SS was first coming into popularity and the first reactions were similar to Class-D now. It will get better, no doubt and hopefully one day sound better than SS. Will it ever sound better than tubes? I have my doubts....but hope one day it can. Believe me, slugging around 150 pound SS amps is no fun. These little Class-D amps are super powerful and light. Imagine a great sounding, super powerful amp, which runs cold the size of a step up transformer? Nice.
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  15. #15
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    Re: Class-D amps

    I've been reading about the D-Sonic M3-1500M (1500 watts/channel into 8 ohms! - 2400 watts/channel into 4 ohms! - oh my!)

    M2 Series Amplifiers, Power Amplifiers & Class D Amplifiers for Sale Online

    $1500 each

    Insane.

    Reviewers said it was very warm sounding and almost too analog!

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  16. #16

    Re: Class-D amps

    Hi Mike,

    I know you are a Classe fan so it might interest you that Classe had a proto type Class D amplifier at our recent Music Matters event. It was hooked up to the B&W Nautilus speakers and my friend was really impressed with the sound. When he asked which amplifier was being used, it turned out it was a proto type amplifier Classe was working on that was Class D. I"m not sure which Class D implementation they are using.

  17. #17
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    Re: Class-D amps

    Quote Originally Posted by hiro100 View Post
    Hi Mike,

    I know you are a Classe fan so it might interest you that Classe had a proto type Class D amplifier at our recent Music Matters event. It was hooked up to the B&W Nautilus speakers and my friend was really impressed with the sound. When he asked which amplifier was being used, it turned out it was a proto type amplifier Classe was working on that was Class D. I"m not sure which Class D implementation they are using.
    Very cool! Thanks for sharing.
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  18. #18
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    Re: Class-D amps

    hey Mike, I have tried some truly notable models: TADm2500, Rowland 525, and Merrill veritas with my Pass XP-20 and TAD cr-1. I know my speakers do have special needs to truly thrive but all three of these class D were fine, quiet, tight bass but sound stage and musicality just did not compare to any of the class A or AB amps. Just not even close for my particular setup.
    ATB,
    Nick
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  19. #19

    Re: Class-D amps

    The Arion Harmony amps use a tube front end and class D out, they sound great, much like the Rogue Medusa, both neutral in a good sense.

  20. #20
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    Re: Class-D amps

    Mike,

    Glad you started this thread. I still have the ARC DS450 driving the Salon 2s. As you may remember, I was considering getting the DS450Ms to replace the stereo version. I continue to lean towards the Pass. Just need to pull the trigger.

    Mike

  21. #21
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    Re: Class-D amps

    Mike

    Have you considered Classe amps? You might be surprised.
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  22. #22
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    Re: Class-D amps

    Mike - I have the DS450M's too. The Pass are great amps. Real sweet with a great midrange. However, I did hear Mark's CAM-600's and loved the combo. I have a pair of CAM-600's and Studio 2's coming my way next week !
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  23. #23
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    Re: Class-D amps

    Joe,

    I have. Both Mike and Mark (MDP) recommended them to me a while back. The 600 monos have excellent reviews.

    I have been considering the Pass X600.5s and the XA200.5s. They are very good companions to the ARC Ref5SE.

    I suppose all 3 are good options. My challenge is being able to arrange an audition given where I live.

    Mike

  24. #24
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    Re: Class-D amps

    Quote Originally Posted by Ritmo View Post
    Joe,

    I have. Both Mike and Mark (MDP) recommended them to me a while back. The 600 monos have excellent reviews.

    I have been considering the Pass X600.5s and the XA200.5s. They are very good companions to the ARC Ref5SE.

    I suppose all 3 are good options. My challenge is being able to arrange an audition given where I live.

    Mike
    Bring your REF5SE to Mark's! He's always wanted to hear that preamp too with his system.
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  25. #25
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    Re: Class-D amps

    I love Pass gear but the heat output was too much during any time of the year except the dead of winter where the heat was welcome.
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  26. #26
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    Re: Class-D amps

    Some gear combos go together like peanut butter and jelly. Classe and Revel is one of them.
    Wharfedale Linton w/ stands, Avantgarde Duo XD, Klipsch RB-75, Klipsch RP-160M.

    Luxman 590AX Mark II, Job INTegrated.

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    Misho Myronov Wooden amp, First Watt SIT-3 (x 2 - one as backup), First Watt F7, Job 250 Monos, Valvet E2se, 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)

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  27. #27
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    Re: Class-D amps

    Another idea....

    Keep the DS450M's for the bass of the Salon 2's and add a pair of ARC REF250's for the mid/high. It works! I run that combo on my Aida's. The gain is matched - you just put the REF250's on the 8ohm tap. It's an amazing combo. Sweet and thunderous!
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  28. #28

    Re: Class-D amps

    Quote Originally Posted by Ritmo View Post
    Joe,

    I have. Both Mike and Mark (MDP) recommended them to me a while back. The 600 monos have excellent reviews.

    I have been considering the Pass X600.5s and the XA200.5s. They are very good companions to the ARC Ref5SE.

    I suppose all 3 are good options. My challenge is being able to arrange an audition given where I live.

    Mike
    Mike, I will be very interested in seeing how this pans for you. I have just purchased a pair of Salon 2s and am considering the X600.5 and the Krell Evos myself.


    Allen

    Speakers: Magico S7
    Amp: CH Precision A1
    Preamp: Trinity Preamp
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    TT: Kronos Sparta, Helena arm, Airtight PC-1
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  29. #29

    Re: Class-D amps

    Quote Originally Posted by socfan12 View Post
    Mike, I will be very interested in seeing how this pans for you. I have just purchased a pair of Salon 2s and am considering the X600.5 and the Krell Evos myself.
    Allen, I'd throw the Sanders Magtech amp in there too, probably one of the bargains out there & specifically designed to drive hard loads.Quite a neutral signature & tone to it too.Money back guarantee to try & buy, or there was.

  30. #30

    Re: Class-D amps

    According to the latest review on Home HiFi dot com website, the D-Sonic must be the best Class D amp on the market.

  31. #31
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    Re: Class-D amps

    Quote Originally Posted by Face View Post
    I've been saying this for a while, tube pre plus class D is a great mix. The control of class D plus the euphorics from a tube pre give you the best of both worlds, IMO of course.

    I concur. Using an EVS1200 with a Modwright LS36.5DM preamp in the main system currently. The (new) Merrill audio amps are really nice (both sound and finish) but of course they are priced accordingly.
    Main System - Lumin U1, Modwright LS36.5 DM Preamp, EVS 1200 Amp, EMM Labs DAC 2X (ver. 2), Torus RM-20, Thiel CS 3.7s, 2 Rel Storm III subs
    Back-up 1 - Hegel H190 Integrated Amp/DAC, Integra DPS 6.9 Transport, 2 Richard Gray cond, Ohm Microwalsh Talls, Rel Strata III sub
    Back-up 2 - Sherbourn Pre-1, Mivera PurePowerSE Amp, Panasonic DP-UB9000, Vansevers cond, B&W P6s, Sumiko S.5 sub

  32. #32
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    Re: Class-D amps

    Anyone seen/heard the Rogue Audio Dragon amplifier? One of my prejudices about many of class D is the SMPS power supplies. The Rogue Audio gear has both a linear power supply, and a tubed input circuit. The Dragon has nCore digital boards that has been reviewed well.

    any other thoughts on the various digital boards? As I am just learning about this class, I’m sure I missed some.

    IcePower, Hypex nCore, purifi, the very high power D-Sonic board
    Amp : DIY FirstWatt M2x mono amps
    Digital : Bricasti M12, Oppo 203
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    Headphone : BHSE + Voce

  33. #33
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    Re: Class-D amps

    Has anyone of you tried Mola Mola?

    This is Bruno Putzeys high-end amplifier brand. They do get excellent reviews.

    https://www.mola-mola.nl

    Attached Images Attached Images
    Hans

    Bowers & Wilkins 805 D3 /alternatively JM Lab Point Source Aria 5 (self modified)/ 2x SVS 3000 SB, Audionet AMP (2x), dCS Bartók used as streamer / DAC / preamp, Pro-Ject RPM 9 with Speedbox S and Orthofon MC Vivo Blue, KEF LS50 Nocturne / Sunfire Atmos(kitchen). Patio: Bluesound Node 2i and Focal CMS50.
    RoonServer on Nucleus.

  34. #34
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    Re: Class-D amps

    Quote Originally Posted by Glareskin View Post
    Has anyone of you tried Mola Mola?

    This is Bruno Putzeys high-end amplifier brand. They do get excellent reviews.

    https://www.mola-mola.nl


    Yes I have, on several occasions.
    They are excellent.

    But last month, I heard his new amp modules (see https://purifi-audio.com/ ).
    Expect a paradigm shift!

    I visited with Jacques, another Belgian audio buddy.
    You can read about our findings here: https://www.audioaficionado.org/showthread.php?t=47023
    Vivid Audio - Burmester - Hegel - Marantz - Oppo - Pioneer 60" - Wireworld

  35. #35

    Re: Class-D amps

    "Now, I’m amazed at the quality and clean reproduction of the lower bass notes. From top to bottom it sounds as though I have upgraded my speaker system. I love trumpet music and I’ve always perceived that as FAST as Dizzy Gillespi is, he wasn’t completing the notes. He was blasting them out. Now I realize that my previous amplifiers from the last 12 years haven’t been fast enough to keep up with him. Now I am hearing how crisp and clean each note he plays is. Amazing. People often describe sound with depth and width. With this amp, I’m describing it as a “sound field” There is a comprehensiveness to what I’m hearing now that previously didn’t exist. I’ve never heard anything like this. In my system, this is even quieter than the PS Audio amps."

  36. #36
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    Re: Class-D amps

    Who are you quoting?

    Quote Originally Posted by Conanb1 View Post
    "Now, I’m amazed at the quality and clean reproduction of the lower bass notes. From top to bottom it sounds as though I have upgraded my speaker system. I love trumpet music and I’ve always perceived that as FAST as Dizzy Gillespi is, he wasn’t completing the notes. He was blasting them out. Now I realize that my previous amplifiers from the last 12 years haven’t been fast enough to keep up with him. Now I am hearing how crisp and clean each note he plays is. Amazing. People often describe sound with depth and width. With this amp, I’m describing it as a “sound field” There is a comprehensiveness to what I’m hearing now that previously didn’t exist. I’ve never heard anything like this. In my system, this is even quieter than the PS Audio amps."
    Bud

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  37. #37
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    Re: Class-D amps

    Last edited by joeinid; July 5, 2020 at 12:50 AM.
    Wharfedale Linton w/ stands, Avantgarde Duo XD, Klipsch RB-75, Klipsch RP-160M.

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  38. #38
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    Re: Class-D amps

    Hey Mike,

    Doesn't MBL also offer some class D amps?

    My buddy from the audio club who has the same MBL speakers as you do and their big boy mono blocks and the MBL pre-amp had EJ build him mono blocks to use on the bass. He is thrilled with what the class D has done for the low end while using his MBL's for the rest.

    As a side note, EJ modified the amps only to install special speaker terminals because the the cables that our friend is using are so huge that they could not attach securely to standard terminals .
    Wyred 4 Sound SX-1000R

    I believe that Jim Smith has one of these and could probably give you some insight on it.
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  39. #39
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    Re: Class-D amps

    Quote Originally Posted by Randy Myers View Post
    Hey Mike,

    Doesn't MBL also offer some class D amps?

    My buddy from the audio club who has the same MBL speakers as you do and their big boy mono blocks and the MBL pre-amp had EJ build him mono blocks to use on the bass. He is thrilled with what the class D has done for the low end while using his MBL's for the rest.

    As a side note, EJ modified the amps only to install special speaker terminals because the the cables that our friend is using are so huge that they could not attach securely to standard terminals .
    Wyred 4 Sound SX-1000R

    I believe that Jim Smith has one of these and could probably give you some insight on it.
    Wyred 4 Sound ST-750LE
    Yes, but they are a hybrid of sorts.

    “In a Class D amp the input is first converted/encoded by a modulator into a pulse train (using pulse width, pulse density, or related modulatory techniques) that represents the amplitude variations of the audio signal. This pulse train is then fed to the amplifying devices (usually MOSFETs), which operate like electronic on-off switches. Working alternately, these transistors switch back and forth between the supply rails, generating positive and negative boosted signals that are subsequently low-pass filtered (to get rid of the very high frequencies used by the modulator to encode the input signal), sometimes high-pass filtered (to reduce residual distortion), and fed as a higher-gain analog (sinusoidal) signal to the loudspeakers. Theoretically, a switching amplifier (which dissipates virtually no power as heat) has an efficiency of 100%, while Class B amps have a theoretical maximum efficiency of 78% and Class A amps 20–50%.

    Unlike its predecessors and much of its current competition, the Noble Line N15 monoblocks under review are said to guarantee a linear signal independent of load, level, or frequency. This is a bold claim, considering (as MBL itself points out in its LASA 2.0 white paper) that Class D amplifiers inherently distort the music signal depending on frequency. (Natively they have low THD in the bass and very high THD in the treble.) Moreover, Class D amplifiers are always designed for a particular resistance value (e.g., 4 ohms), but a loudspeaker does not have a constant resistance—it is a “complex load” with impedances varying with frequency. Thus, in addition to their native non-homogeneous distortion profile, Class D amplifiers change their power delivery (and hence their frequency response) with changes in load. On top of this, the louder a typical Class D amp plays, the lower its overall distortion, and (paradoxically) the quieter it plays, the higher its distortion.

    MBL claims to have solved these myriad problems with its LASA (Linear Analog Switching Amplifier) 2.0 technology, which, instead of the typical and economical switch-mode power supplies of most Class D amplifiers, uses a massive analog toroidal power supply. The LASA circuitry is also symmetrical in layout for better common mode rejection, employs low-drop fast-recovery rectifiers to create a low-noise supply voltage, and has a “soft-clipping” provision to eliminate aggressiveness and distortion at very high output levels. Whether or not these strategies result in an amp that (as MBL claims) is closer to Class A or Class AB in linearity, noise, and stability than it is to typical Class D, there is no question that the N15 differs sonically from the switching amplifiers I auditioned lo these many years ago.”

    Source:

    MBL Noble Line N11 Preamplifier and N15 Monoblock Amplifier | The Absolute Sound


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  40. #40

    Re: Class-D amps

    Quote Originally Posted by Mike View Post
    The other day I removed the REF250's from the mid/highs and tried just my ARC DS450M's on my speakers and it was a real different sound. Tight, punchy, with a sharp definition, but with a rather flat soundstage. I wasn't entirely sure I liked it....it was different from the beautiful slight bloomy midrange I'm used to and musicality of tubes.

    I certainly like the gobs of power and small foot print of Class-D. It has lots of potential. It got me to thinking.....are there any good Class-D amps out there or even any Class-D hybrid amps anyone has heard and liked?

    NuForce
    BelCanto
    Anthem
    Rogue
    ARC
    ....others?
    I have no interest in "gobs of power" amps with my Avantgarde speakers, but I do use Class D amplification.

    After testing about a dozen amps of all flavours (after deciding to move away from tubes) I concluded I didn't like Diavelet, Red Wine or Lyngdorf's Class D efforts and I found Sugden and Accupase Class A's a bit on the soft / warm side, but I did like NAD M32's Direct Digital sound. I'm hoping their new Puriti M33 may be even better.

    Also rejected for one reaon or another - GamuT D200 Mk III, Micromega M100, Quad Platinum, Sanders Magtech and others. NAD shouldn't be ignored just because it's relatively low priced and includes a DAC - plus streamer and Dirac RC on the M33.
    Sources - NAD M50.2 (streamer, CD player, CD ripper, hard drive music store)
    Amplification - NAD M32, NAD M12, Accuphase A36, Consonance Cyber 845, GamuT D200 Mk III
    Speakers - Avantgarde Duo (2006 - aesthetically modified), Martin Logan Expression 13A (for sale), New Avantgarde Duo XDs on order

  41. #41
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    Re: Class-D amps

    Quote Originally Posted by Hear Here View Post
    I have no interest in "gobs of power" amps with my Avantgarde speakers, but I do use Class D amplification.

    After testing about a dozen amps of all flavours (after deciding to move away from tubes) I concluded I didn't like Diavelet, Red Wine or Lyngdorf's Class D efforts and I found Sugden and Accupase Class A's a bit on the soft / warm side, but I did like NAD M32's Direct Digital sound. I'm hoping their new Puriti M33 may be even better.

    Also rejected for one reaon or another - GamuT D200 Mk III, Micromega M100, Quad Platinum, Sanders Magtech and others. NAD shouldn't be ignored just because it's relatively low priced and includes a DAC - plus streamer and Dirac RC on the M33.
    Man, as A.Wayne would say, you need some toooooooobs with those!

    My faves with AG:

    VAC
    VIVA
    Luxman MQ300

    For solid state:
    SIT-3
    Luxman 590
    Constellation
    Boulder



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  42. #42

    Re: Class-D amps

    Quote Originally Posted by Mike View Post
    Man, as A.Wayne would say, you need some toooooooobs with those!

    My faves with AG:

    VAC
    VIVA
    Luxman MQ300

    For solid state:
    SIT-3
    Luxman 590
    Constellation
    Boulder



    Sent from my iPhone using Tapatalk Pro
    Tubes - no thanks. I'm sure those amps are all great with AGs (you're an expert), but decided I'd listen to MUCH more music with SS powering my speakers. Dead right - has worked out that way, so I won't be going back to the hassle, life expectancy worries, etc of lovely sounding SETs in a hurry.

    I'm now CONSIDERING a switcher so I can switch from my NAD amp to perhaps an Art Audio PX-25 SET for occasional listening without having to change speaker cables.

    Have you actually tried a NAD M32 with Avantgarde? I suspect not from your reaction. I've used Graaf GM20 OTL, Unison Research SMT 845, Audio Note (with 300B), Art Audio Carissa (845), Art Audio PX-25 and Consonance Cyber 845 monos, but I really don't want to go back as the NAD is so good - surprisingly so!

    Peter
    Sources - NAD M50.2 (streamer, CD player, CD ripper, hard drive music store)
    Amplification - NAD M32, NAD M12, Accuphase A36, Consonance Cyber 845, GamuT D200 Mk III
    Speakers - Avantgarde Duo (2006 - aesthetically modified), Martin Logan Expression 13A (for sale), New Avantgarde Duo XDs on order

  43. #43
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    Re: Class-D amps

    Quote Originally Posted by Hear Here View Post
    Tubes - no thanks. I'm sure those amps are all great with AGs (you're an expert), but decided I'd listen to MUCH more music with SS powering my speakers. Dead right - has worked out that way, so I won't be going back to the hassle, life expectancy worries, etc of lovely sounding SETs in a hurry.

    I'm now CONSIDERING a switcher so I can switch from my NAD amp to perhaps an Art Audio PX-25 SET for occasional listening without having to change speaker cables.

    Have you actually tried a NAD M32 with Avantgarde? I suspect not from your reaction. I've used Graaf GM20 OTL, Unison Research SMT 845, Audio Note (with 300B), Art Audio Carissa (845), Art Audio PX-25 and Consonance Cyber 845 monos, but I really don't want to go back as the NAD is so good - surprisingly so!

    Peter
    No, the only NAD I own is the M17 v2.

    If you can ever score a SIT-3 (and the necessary resistors), you will be stunned.


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  44. #44
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    Re: Class-D amps

    and the Necro-thread award of the week goes to....

  45. #45

    Re: Class-D amps

    I'll try to arrange a demo of the SIT-3 amp, though not sure there are any UK dealers. Looking at the Owner's Manual, it seems to have no way of turning it off short of using the back panel switch. I wouldn't want an inefficient Class A amp that doesen't either turn itself off after a period with no input (an EU requirement) or can be turned off via trigger from preamp.

    Has it either of these fetures to make it envirnmentally acceptable? In fact, I'd be very reluctant to consider an amp that burns so much energy that the case gets to 50 deg C when switched on. That's one of my reasons for moving away from tubes! Thanks. Peter
    Sources - NAD M50.2 (streamer, CD player, CD ripper, hard drive music store)
    Amplification - NAD M32, NAD M12, Accuphase A36, Consonance Cyber 845, GamuT D200 Mk III
    Speakers - Avantgarde Duo (2006 - aesthetically modified), Martin Logan Expression 13A (for sale), New Avantgarde Duo XDs on order

  46. #46
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    Re: Class-D amps

    Quote Originally Posted by Hear Here View Post
    I'll try to arrange a demo of the SIT-3 amp, though not sure there are any UK dealers. Looking at the Owner's Manual, it seems to have no way of turning it off short of using the back panel switch. I wouldn't want an inefficient Class A amp that doesen't either turn itself off after a period with no input (an EU requirement) or can be turned off via trigger from preamp.

    Has it either of these fetures to make it envirnmentally acceptable? In fact, I'd be very reluctant to consider an amp that burns so much energy that the case gets to 50 deg C when switched on. That's one of my reasons for moving away from tubes! Thanks. Peter
    It doesn’t draw much power.


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  47. #47
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    Re: Class-D amps

    Quote Originally Posted by Hear Here View Post
    but I really don't want to go back as the NAD is so good - surprisingly so!

    Peter
    I still have a M51 dac and have seen/heard zero reason to change. May add an RME at some point, for alternate use.

    cheers,

    AJ

AudioShark - The Best High End Audio Discussion forum.

AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.

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.

We are as crazy about this hobby as you are! So come on in and join us! Audioshark.org the Friendliest Audio Forum!

Industry Participation Disclosure : The owner and administrator of Audioshark is the owner of Suncoast Audio LLC in Sarasota Florida. Suncoast Audio has a full brick and mortar presence in Sarasota with several great show rooms with many world class brands. More information can be found at http://www.suncoastaudio.com

Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.

Sincerely,
The Audioshark.org Team

Class-D amps

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