KR Audio PX25 vs 242 vs the rest...

After lots of back and forth, I'm really enjoying the KR Audio 5U4G (Lampi) with the KR Audio 242's. Simply outstanding combination. Using my analog setup as the reference, this combination gets the closest in sound so far. I still want to try the PX4's.
 
Mike

Have you tried any of the NOS American made 5U4G's from the 50's-60's from Tung Sol, Raytheon, Sylvania, etc? Fairly easy to find for less than $30. I bought a NOS Tung Sol last week for less than $20.
 
Mike

Have you tried any of the NOS American made 5U4G's from the 50's-60's from Tung Sol, Raytheon, Sylvania, etc? Fairly easy to find for less than $30. I bought a NOS Tung Sol last week for less than $20.

I actually have tried some. They are very good, but I found the RCA 5U4G too soft, the Phillips metal base Z34 too bright, the Sylvania just ok, but I haven't tried that Tung Sol or Raytheon though.

How are you liking that Tung Sol?
 
A few I've tried...

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And about 10 others....


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I agree, I find those kind of Rectis too soft. KR 5u4g, or based on reports, just pay up for the Tak 274
 
After lots of back and forth, I'm really enjoying the KR Audio 5U4G (Lampi) with the KR Audio 242's. Simply outstanding combination. Using my analog setup as the reference, this combination gets the closest in sound so far. I still want to try the PX4's.
I'am looking at getting the KR Lampizator5U4G to run with the KR242.
Currently got the Emission Labs mesh 5U4G with the KR 242.

What can I expect the be the subtle differences?
 
I have a pair of KR power for sale and another friend has Px4.

400 gbp per pair, plus postage.
 
I'am looking at getting the KR Lampizator5U4G to run with the KR242.
Currently got the Emission Labs mesh 5U4G with the KR 242.

What can I expect the be the subtle differences?

Two of us sold our EML text after receiving the KR 274, and then I sold my KR 274 after receiving the Lampi KR recti
 
I have all
of the tubes posted. Except the eml 5u4g.
Thr eml while good tonal qualities also has grain
and it's something you don't know till it's gone.
A solid state recti shows it. The kr5u4g recti is in my top 3
a very quit tube in fact all
kron tubes are very low level noise
I own the kr 242 /px4/px25. And a bunch of lampi and anniversary output tubes
mesh seems to add something musical to all tubes including the recti
I see why the 242 tube is liked as it's very clean / detailed and has no peaks with a nice mid and high end but it's low end lacks a bit
some of our music needs a low end added
ots why I use many tubes. Same goes for male and female vocals
the 242 is warm of neutral but not much.

I have not heard the kr274b tube and I like them over the 5u4g. My exception. Is the Kron
when I got my b7 back with mundorf caps a cap I like
I let Luke pic what tubes to seel
me with its upgrade. I do this as he is our artist and I have so many tubes I feel
i could nkt make a choice for myself. Luke has improved our dacs at every update
I know as I have had many. So I let him pick. That is hiw I got the px25 and kr5u4g a set I would never buy. Yet ithey have magic. This is how it happens for me. I got my head dac back I'll post in its own thread
 
Hi Al, Bill and I found the bass, slam, and resolution much higher on the 242 as well. This can change based on the system if the gain does not match. Best thing is to get the Lampi adjusted for 242 gain and the rest of the electronics adjusted to match the gain. It is the the single biggest upgrade both he and I.know apart from changing speakers. We were once Lampi fans, now we are Lampi with 242 fans. Even his wife was commenting on hifi attributes yesterday and she has never done that before.
 
I should of clarified my bass remark. Yes it has increased speed or slam
the dac I am using for the above observation is my head dac / no driver enabled and it has dueland caps and all of the latest clocks and both r2r and chipless dsd to 512.
but for me and this is me it has less of it than 45 and of course a2a3 or 300 b. I feel in the pursuit of an anolog sound some including me give up some weight to get there or closer to it.
If there is one conclusion we all can draw from a a lampi big 7 is its tremendous adversity in sound in our setups. Using both headphones and speakers alone points to no one tube for all much less music genre. One of the greatest attributes is the many possibilities we can draw from in its use in the vast variety of music
In using my head dac by rolling drivers I can achieve it's sound with the Kron px25 tube. But that is getting off topic
 
Yes it sure seems that way.
Lets go through a few groups of tubes and give simple views
101d very linear least bass , most or of the most speed in notes and impact but has least note thickness. I think it's staging seems flat least musical but great on big stage like classical
next 242 seems to increase a relaxing feel / clean nice highs increased note thickness has good musicality has good Staging and overall a nice tube. Has good speed but not brutal like a 101d
px 25 that feels like a 300 b or heavy 45 but has low noise floor giving it more details even in bass than a 300b
45 a bit brighter less warm I have many so they vary but more note thickness thena 101 d
more tense then a 242
300 b has increased warmth and a bit bloated bass some have a lush mid but they seem to roll
off the highs more making some seem darker
now strictly bass
101d very detailed fast articulate
242 a bit more weight and still has speed but relaxed less analytical then the 101d
45 my sweet spot for bass has it all speed , weight , impact
then the px25 and 300b more impact , slower
more weighted and some seem bloated
now in my head dac I can roll In
driver tube that negates what's wrong with a 300 b
this is with a px25
the drivers are extremely neutral so it does work both as a dac and with headphones
please reply this nkt an argument it's just hiw each hear it on there system
 
Two of us sold our EML text after receiving the KR 274, and then I sold my KR 274 after receiving the Lampi KR recti

That tells me what you did, but doesn't explain the sound signature difference if any.
 
Yes it sure seems that way.
Lets go through a few groups of tubes and give simple views
101d very linear least bass , most or of the most speed in notes and impact but has least note thickness. I think it's staging seems flat least musical but great on big stage like classical
next 242 seems to increase a relaxing feel / clean nice highs increased note thickness has good musicality has good Staging and overall a nice tube. Has good speed but not brutal like a 101d
px 25 that feels like a 300 b or heavy 45 but has low noise floor giving it more details even in bass than a 300b
45 a bit brighter less warm I have many so they vary but more note thickness thena 101 d
more tense then a 242
300 b has increased warmth and a bit bloated bass some have a lush mid but they seem to roll
off the highs more making some seem darker
now strictly bass
101d very detailed fast articulate
242 a bit more weight and still has speed but relaxed less analytical then the 101d
45 my sweet spot for bass has it all speed , weight , impact
then the px25 and 300b more impact , slower
more weighted and some seem bloated
now in my head dac I can roll In
driver tube that negates what's wrong with a 300 b
this is with a px25
the drivers are extremely neutral so it does work both as a dac and with headphones
please reply this nkt an argument it's just hiw each hear it on there system

Looks like we have different experiences on 242. It is more detailed, fast, and way better tone than 101d. More 3D and bass and slam and extension on either end.
 
That tells me what you did, but doesn't explain the sound signature difference if any.
Hi Deuter, we don't sell for small differences, everything was more - soundstage, bass, slam, just sounded better in every way. EML was too laid back in comparison. Best thing for rectis is buy and then sell the one you don't like, they sell quickly
 
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