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ZTPRE to arrive soon! (Read 574 times)
MrDerrick
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Posts: 9
ZTPRE to arrive soon!
06/08/18 at 19:21:55
 
I have been in want of a ZTPRE since shorty after its introduction, but could not justify acquiring one.

The layout and execution of the components is truly a thing of beauty and modern ( steampunk? ) design.  

While my past goal was to eliminate a pre from my system and the DS Dac did just that, constantly reading comments on how a pre improved on the DS kept me wondering.

Sound wise I want for nothing at this moment without a pre, its that good.
But when Lon acquired a ZTPRE and reported on how much of an improvement it made I made up my mind that I had to give it a go.

Then the 25th ZTPRE sold and the introductory price was gone, drat!

I had to put my aspirations of ownership on hold until I could muster up more additional funds.
Then I came across busterfree's classified for his ZTPRE.
It was optioned out exactly the way I would have ordered mine.

With in 24 hours it was on its way, I haven't waited for an audio component to arrive with this much anticipation since I can't remember when.
Hopefully it will arrive Monday and I will be able to report on it by next weekend!
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( Head End Digital ) PSA P300 / HS-210 NASwSSD / PPA SW X 2 / Sonore SSR / Titans Audio Lab Helen / PSA Direct Stream Dac / HDPLEX LPS / UpTone LPS1 ( Live End Analogue ) PSA P3 / ZTPRE / Atma Sphere M60 OTL / Avantgarde Duo Omega / L & R Rives PARCs on SUB 225s
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Lon
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"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 14339
Re: ZTPRE to arrive soon!
Reply #1 - 06/08/18 at 20:02:00
 
Congrats Mr. Derrick! I think you'll be VERY happy with the sound that this brings to your system! The DS needs to be used via the balanced output and the ZTPRE will do it justice! Be sure to let us know your impressions.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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busterfree
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Re: ZTPRE to arrive soon!
Reply #2 - 06/09/18 at 01:21:50
 
Smiley
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MrDerrick
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Posts: 9
Re: ZTPRE to arrive soon!
Reply #3 - 06/15/18 at 18:15:54
 
The ZTPRE arrived safe and sound thanks to Juan's attention to double boxing and cushioning. Juan even unexpectedly through an added bonus into the box!

I placed the ZTPRE on a Black Diamond Shelf for the Source directly in front of my M60's. ( whose input is front and center ) I was able to connect them together with a Bybee Balanced Quantum filter as the interconnect.

Per my request, Juan shipped the ZTPRE less the tubes, I have hundreds of old 6DJ8/6922/7308s from my past ARC Ref 1 days. ( it took 4 pair )
I selected 6 well matched 6922 Amperex White Shield PQs ( USA 1962 )

I knew that it would be foolish of me to expect everything to sound perfect from the start and I was right. The roller coaster ride of dialectic settling in was evident almost immediately. So I just put some random albums on repeat/shuffle play, turned the amps off and walked away.

I listened once a day since Monday to check on the settling in progress.
Tuesday was hyper fatiguing detail, Wednesday was less fatigue, but no bass, Thursday things were really opening up and sounding smoother, the bottom end had better definition.

Friday mornings I have the house to myself to listen before work. I turned the amps on at 4:30 AM and was ready to start listening at 6 AM.
Needless to say, I wish that I could have stayed home all day to listen!

My ultimate goal was to be able to engage the -20dB attenuation in the DS in order to lower its noise floor and adjust the ZTPREs output gain to allow me a volume range of 80 > 106 on the DS. I was not prepared for how much more dynamic it was going to sound!

I have never experienced such speed and transparency from my system, its hard for me to believe what I have been missing. Has anyone else gone the -20dB attenuation route with the DS / ZTPRE combo and experienced the same thing?


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( Head End Digital ) PSA P300 / HS-210 NASwSSD / PPA SW X 2 / Sonore SSR / Titans Audio Lab Helen / PSA Direct Stream Dac / HDPLEX LPS / UpTone LPS1 ( Live End Analogue ) PSA P3 / ZTPRE / Atma Sphere M60 OTL / Avantgarde Duo Omega / L & R Rives PARCs on SUB 225s
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Lon
Seasoned Member
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"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 14339
Re: ZTPRE to arrive soon!
Reply #4 - 06/15/18 at 18:22:55
 
Congrats! You got a great deal and a great component from a great Decware forumite. I don't have th ZDSD and can't comment on the -20 db thang. I will say that my ZTPRE exceeded my own expectations for a preamp at any price and of any type.

I tried sextets of 6922 types from Mullard, Phillips, Amperex and other makers and ended up going back to the 6N1P and then the 6N5P--Steve's tested and selected balanced 6N5P are remarkable in the ZTPRE, bettering all the other NOS US and European types. I highly recommend trying 6N5P in the ZTPRE!
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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MrDerrick
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Posts: 9
Re: ZTPRE to arrive soon!
Reply #5 - 06/15/18 at 18:30:51
 
Lon, not the ZDSD, the PSA Direct Stream Dac!

I may have to give Steve's select 6N5Ps a try.
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( Head End Digital ) PSA P300 / HS-210 NASwSSD / PPA SW X 2 / Sonore SSR / Titans Audio Lab Helen / PSA Direct Stream Dac / HDPLEX LPS / UpTone LPS1 ( Live End Analogue ) PSA P3 / ZTPRE / Atma Sphere M60 OTL / Avantgarde Duo Omega / L & R Rives PARCs on SUB 225s
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Lon
Seasoned Member
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"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 14339
Re: ZTPRE to arrive soon!
Reply #6 - 06/15/18 at 19:06:53
 
Oh okay, I get it now, the 20 db cut, don't know why I was thinking of the Decware component, you had it spelled out plain as day. No I haven't tried that, but I need all the gain I can get from my DSD DAC for my system, i run mine now balanced out, no output cut, and use the ZTPRE to control system volume. I could probably get any with the 20 db cut on if I were only using the system for music, but the DVR needs the extra boost as its output is the lowest. Anyway now, with the ZBIT, ZROCK2, and the 25th Anniversary Monoblocks I'm getting the sort of sound I only dreamed of. Tube-rolling lately has been very educational and shown me sonics I never really imagined I'd have. I don't feel like messing with anything now. . . though I do have a 25th Anniversary CSP3 arriving Monday. . . .

The ZTPRE is an amazing component. It really does "make everything better" and yet it can fade into the woodwork, it doesn't call attention to itself, it lets everything else shine. Awesome preamp--I thought I could do without a preamp but I was wrong.

All systems are different but once I had a sextet of 6N5P that I got off ebay in the ZTPRE I was like "Wow, this is the tube to use." And then I ordered six from Steve that he tested and tried in his own ZTPRE and everything went a notch higher still. As all our systems are different I can't make any guarantees but I sure think the 6N5P is worth a try.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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busterfree
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Posts: 322
Re: ZTPRE to arrive soon!
Reply #7 - 06/16/18 at 15:28:56
 
I am glad the ZTPRE arrived safely. It is an amazing preamp. I really enjoyed it, and I am glad it is working so well for you.

I have the PS Audio DirectStream DAC with the Bridge II input. I have try the -20 dB attenuator option.
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MrDerrick
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Re: ZTPRE to arrive soon!
Reply #8 - 06/23/18 at 13:26:49
 
The ZTPRE has opened up a seemingly endless combination of gain settings.

Direct Stream DAC - run wide open or in -20dB ( both variable via the volume control )

ZTPRE - adjustable via the input and output attenuators

Atma-Sphere M60 OTL 20dB of gain or 12dB gain

Right now, the best sounding gain path combination is;

DS on full output, volume set to 88
ZTPRE input volume set at 75%, output at 100%
M60 gain with shorting plug = 12dB of gain

Lower noise floor than I had previously, keep in mind that the Duo Omegas are 108 dB sensitive.

I thought the noise floor was as low as it could go before the ZTPRE, now the system is like a black hole when it comes to self noise.
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( Head End Digital ) PSA P300 / HS-210 NASwSSD / PPA SW X 2 / Sonore SSR / Titans Audio Lab Helen / PSA Direct Stream Dac / HDPLEX LPS / UpTone LPS1 ( Live End Analogue ) PSA P3 / ZTPRE / Atma Sphere M60 OTL / Avantgarde Duo Omega / L & R Rives PARCs on SUB 225s
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Lon
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"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 14339
Re: ZTPRE to arrive soon!
Reply #9 - 06/23/18 at 14:15:26
 
Great to read Mr. Derrick. I love my ZTPRE. I was convinced that I didn't need a preamp at all with the PS Audio DirectStream DAC, but the ZTPRE immediately made me change my mind. I was a little worried when I added my CSP3 25th Anniversary version . . . but it has not presented a problem. I am running my DSD ful output (balanced) without the 20 db attenuation, ZTPRE output pots about 60 % and for music my volume set at about 50% to 70% and my CSP3 at about 70 percent and my ZROCK2 at about 4 'o clock and the Monoblocks at about 90 percent. (Different tube complements would mean a few adjustments.) Works for me!

I can't imagine my system without the ZTPRE now.

Steve has talked about a "hum-free" circuit in the ZTPRE. I don't know how that works but it sure does.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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MrDerrick
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Posts: 9
Re: ZTPRE to arrive soon!
Reply #10 - 06/24/18 at 21:47:08
 
After extensive listening this week end there appears to be 2 sweet spots regarding the gain structure in my system.

The DS at full output with volume set around 88
ZTPRE volume at 75% and output level at 100%
M60 amp gain set to 12 dB

or

The DS with the -20 dB attenuation engaged, volume at 100
ZTPRE volume at 100% and output level at 100%
M60 amp gain set to 12 dB

Which of these two gain structure/paths I prefer depends on the type/quality of the source material that I am listening to.

It is now much easier to distinguish which sounds better, wav or flac and I do not always prefer one over the other.

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( Head End Digital ) PSA P300 / HS-210 NASwSSD / PPA SW X 2 / Sonore SSR / Titans Audio Lab Helen / PSA Direct Stream Dac / HDPLEX LPS / UpTone LPS1 ( Live End Analogue ) PSA P3 / ZTPRE / Atma Sphere M60 OTL / Avantgarde Duo Omega / L & R Rives PARCs on SUB 225s
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Lon
Seasoned Member
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"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 14339
Re: ZTPRE to arrive soon!
Reply #11 - 06/26/18 at 21:28:22
 
Here's my latest settings, sounding really good.

DSD: balanced output, no attenuation engaged, 100 percent output

ZTPRE: 50% input volume via stepped attenuators, 100 percent output.

ZBIT: 100 percent output

ZROCK2: Between 3 and 4 o'clock

SE84UFO3-25 Monoblocks: 85 percent turned up. Bias and ohm switches are on the low positions.

CSP3-25: (Input gain is bypassed on my component though the input stepped attenuators are there); 50 percent output gain from stepped attenuator; output about 70 percent turned up on master gain for music, about 80 for Blu-ray and DVD discs, about 90 to 95 for DVR. At present I'm getting up out of my chair and using it's gain to moderate volume.

Really open and dynamic sound today. Things are settling in very nicely. The CSP3-25 is really coming into its own.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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