Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › REVIEW: Decware Select Zen CSP2 Tube Headphone Amp
New Posts  All Forums:Forum Nav:

REVIEW: Decware Select Zen CSP2 Tube Headphone Amp - Page 28

post #406 of 629

In case anyone is interested, I've recently rolled in one of those Black Plates 1950s RCA 5R4GY Rectifier with brown base and square getters.

 

This rectifier tube is readily available for reasonable prices <US$40 from major online tube retailers or around US$20 if you are lucky on e-bay.

 

1. Inner Resolution

Compared with the Tung Sol 5Y3GT, the extreme inner resolution of the RCA 5R4GY blows the 5Y3GT away.

I can hear the faintest whispers easily in the recording studio or venue for live recordings.

For e.g., the "one, two, three" near the beginning of Brad Paisley's "This is country music" is more distinctive.

It was already present when using a 5Y3GT but I do not have to strain at all to hear the faintest whispers. 

BTW, I replaced the Lorenz PCC88 input tube with an Amperex Pinched Waist 6922 for the improvement in midrange and top-end extension.

However, I lost that magical inner resolution of the Lorenz PCC88.

With the 5R4GY, I have gained back the magical extreme inner resolution of the Lorenz PCC88.

If you are the type of audiophile who wants to hear everything in a recording, e.g. the girlish giggling from a member of the audience in one of Brandi Carlile's live recordings, the 5R4GY is highly recommended.

 

2. Vertical Dimension to Soundstage

Another plus point is that it adds a spatial vertical dimension to recordings.

The CSP2+ already excels in left-right channel separation.

However, when using the 5Y3 family of valves which it was originally designed for, the vertical dimension is not pronounced enough for me.

I vaguely recall Skylab having mentioned this weakness of the CSP2+ when he reviewed it.

After I added the 5R4GY, when I listened to Hotel California by the Eagles, somewhere in the beginning of the track, the sonic "swish"/ "swhosh" sound effect not only appears on the left ( as when using the 5Y3) but now seems to move in a spiral (i.e. with distinctive High-low height) fashion on the left side.

The original vertical sonic dimension weakness appears to have been "fixed" through the use of the 5R4GY.

post #407 of 629

Thanks LS - great observations as usual.

 

Coincidentally, I've been considering (Phillips) 5R4GY tubes this week. Knowing I like the 5Y3GT sound, I wanted to cover the opposite voltage extreme - the 5U4G end.

 

Food for thought...

 

Skylab (if you're listening), did you ever try these or other members of 5U4G family?

post #408 of 629
Thread Starter 
Yes, I tried a Tung-Sol and Sylvania 5U4G. But I preferred the 5Y3G.
post #409 of 629

Just got my Sylvania JAN 5Y3G in the mail today. It is in and working the burn....

 

 

post #410 of 629

Thanks Skylab. I think 5Y3G is my preference too, but should probably try one of these 5R4s just to make sure. Never hurts to have an option too wink_face.gif

 

Completely OT but do you still have the Mjolnir lined up for review on Inner Fidelity? There have been some useful impressions but overall I think the new Schiit gear has been sold a little short. I have only gained a vague idea of their sound. Mjolnir deserves your careful, consistent listening methods and skills...

post #411 of 629
Thread Starter 
Unfortunately, that review did not materialize. As of today I have never heard a Mjolnir, sadly. My next review will be the Cary HH-1.
post #412 of 629
Quote:
Originally Posted by AiDee View Post

 I think 5Y3G is my preference too, but should probably try one of these 5R4s just to make sure. Never hurts to have an option too wink_face.gif

 

 

 

I came across Kevin Deal's Upscale audio Advertisement for the Philips 5R4GYS.

When they made the statement "The best buy and best made 5AR4/5U4G/GZ33/GZ37 that we have or ever had", I knew that I had to try it for myself.

I'm burning in the Philips 5R4GYS now. Will post comparisons vs my other RCA 5R4GY very soon.

 

As the Americans say, show me the color of your money! wink.gif

 

I intend to do a serious shootout between the Philips 5R4GYS and the RCA 5R4GY.

post #413 of 629
Quote:
Originally Posted by Skylab View Post

Unfortunately, that review did not materialize. As of today I have never heard a Mjolnir, sadly. My next review will be the Cary HH-1.

 

Hi Skylab, I too look forward to your audio reviews too!

 

Cary has always been one of those established brands in the audio industry.

Would really love to hear your expert opinion of their HH-1 model.

post #414 of 629

Lord Soth, truly looking forward to this shootout - cheers!

 

Skylab, seriously? That is a shame. Excellent to see you reviewing in a channel other than head-fi, especially one as good as Inner Fidelity.

 

Back on topic, Kevin Deal also has the Mullard CV2493... 

 

Is this a neutral, transparent, detailed sort of tube...or more lush and colored?

Do you only need one, or to get the benefit do you three - for the power-tube positions too?

 

I know there are more expensive tubes, but these are still serious money at $100 each (matched and balanced) eek.gif

post #415 of 629

Just got in 3 matched 6922 Golden Lions and wouldn't you know it, one was DOA...Loud pops after the 20 seconds and they would not stop. I called Steve and talked about new tube behavior. When I held the HP's up to the phone he said that did not sound good. Anyway, I moved one of the good ones into the front position and replaced the 6N1P's back to the L/R. I also swapped out the JAN Sylvania 5Y3G for a JAN Sylvania 5U4G....Wow did things open up! 

 

Listening to Adele 21 now and I went from a club to a hall...biggrin.gif

 

We'll see if Yen Audio is good about returns for the single GL as I don't want to flush $35 for that tube.....


Edited by longbowbbs - 10/19/12 at 1:19pm
post #416 of 629
Thread Starter 
Try the Mullard just in the driver position first. It's a lush tube, more than neutral.
post #417 of 629
Quote:
Originally Posted by Lord Soth View Post

I came across Kevin Deal's Upscale audio Advertisement for the Philips 5R4GYS.

 

When they made the statement "The best buy and best made 5AR4/5U4G/GZ33/GZ37 that we have or ever had", I knew that I had to try it for myself.

 

Such bs marketing! The tube is not a 5AR4, not a 5U4G, not a GZ33, and, guess what, not a GZ37 either.

post #418 of 629

but.....if the parameters of the tube are compatible with the amp......

 

popcorn.gif

post #419 of 629
Quote:
Originally Posted by Skylab View Post

If you are actually lighting up both filaments, simply not passing a signal through one of the two will not improve the life of "one section".  If you were literally not firing one of the two filaments in a dual triode, then of course, you would be preserving that "section". But when I had the CSP-2 (not +), both filaments on all tubes were lit.


I think what makes the CSP2+ sound so good is Steve's ingenious way of powering the heaters with only 4.35 volts.


Edited by clowkoy - 10/23/12 at 10:25am
post #420 of 629

^ Interesting comment. What follows from this do you think? Does it lengthen tube life? Change the sound?

 

Still enjoying your Bottlehead?

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphone Amps (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › REVIEW: Decware Select Zen CSP2 Tube Headphone Amp