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CSP3 with 25th mods (Read 358 times)
piezoman
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Posts: 327
CSP3 with 25th mods
08/21/20 at 03:21:51
 
Does anyone have photos of their CSP3 with 25th mods, showing the 2 voltage regulator tubes? Just curious on the visual :)

I would appreciate some being posted, if possible.

Thank you!

Brad

PS.....How much apparent volume increase is there with the addition of the CSP3 in your system [vs. no preamp], as well as weight & tone that is added with the 25th mods?
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Taboo MK IV-25th
CSP3-25th Anniv. Ed.
ZRock2-25th
ZBIT
Omega Jr. 8XRS towers w/ALNICO driver
Bryston BDA-3 DAC/BDP-2 Media Player
Blue Circle Line Cond.
Audeze LCD-3F
IC's: DSR-II, BC Silver XLR
Cables: ZStyx, DHC-1, Cur
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busterfree
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Posts: 398
Re: CSP3 with 25th mods
Reply #1 - 08/21/20 at 10:36:22
 
See reply #363 & 431 in thread below for an inside pic of CSP3-25

https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1408725911/all
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TV, DirecTV, BRP, TEAC NT-505, Decware ZBIT & SE84UFO3-25, Klipsch Forte III, PS Audio P20, Zero Surge 2R15W

PS Audio DirectStream w/ Bridge II; Decware ZBIT, CSP3-25 & SE84UFO25, Klipsch Forte II, PS Audio P10, Zero Surge 2R15W
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piezoman
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Posts: 327
Re: CSP3 with 25th mods
Reply #2 - 08/22/20 at 16:29:47
 
perfect, thanks buster!
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Taboo MK IV-25th
CSP3-25th Anniv. Ed.
ZRock2-25th
ZBIT
Omega Jr. 8XRS towers w/ALNICO driver
Bryston BDA-3 DAC/BDP-2 Media Player
Blue Circle Line Cond.
Audeze LCD-3F
IC's: DSR-II, BC Silver XLR
Cables: ZStyx, DHC-1, Cur
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will
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Posts: 2251
Re: CSP3 with 25th mods
Reply #3 - 08/23/20 at 16:24:32
 
If interested in seeing where the modded version led, further on in the thread busterfree linked are some pics and videos of the new version of the CSP325 25th Anniversary pre that matches the 25th Anniversary Super Zen amp.

Check out posts 718-728 and posts 750-757.

Relative to your question about apparent volume increase adding a CSP3, responses have started in your thread: preamp - CSP3 volume & weight/tone in General Discussions: https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1598148001/0
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Power-PSA P5, Brickwall/Shunyata Defender+>RevolutionMacMini/Audirvana>Kitsune Singxer>Gustard x20pro DAC modified; Cables: Pi Audio PC, DIY: PCs, ICs, USB, Speaker; Decware- CSP3, Torii IV, HR1-all modified; DIY ZBIT; feet- Archie's, alum/ball bearing, and more
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s3steve
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Posts: 42
Re: CSP3 with 25th mods
Reply #4 - 09/30/20 at 17:36:59
 
On my CSP3 I ordered the Standard Beeswax with the Anniversary Mod for $845.

What is the difference between the "Anniversary Mod" and the "25th Anniversary Mod" besides the dual rectifier tubes?

Only one rectifier tube on mine.
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CSP3-25
SE34I.5
Ariston RD11
PS Audio GCPH with the Underwood upgrade
Pioneer N-50 Network Player
Altec 605B's in a 620 Cabinet
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Lon
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Posts: 17257
Re: CSP3 with 25th mods
Reply #5 - 09/30/20 at 19:34:26
 
The CSP3-25 also only has one rectifier. There are two tubes in the rear on either side of the transformer that are visual aids to the level of the output signal, not rectifiers.

I am 99 percent that underneath the chassis there is a voltage regulation tube for the input tube. I also have a CSP3 that I had built with the 25th Anniversary mods, and there is a voltage tube underneath the chassis for the input tubes, a quite small one.

The main differences are the dual volume controls on the CSP3-25, the green painted chassis with silk-screened information, one additional input for a source (a total of 3), and the fact that the CSP3-25 is NOT also a headphone amp.

I love my CSP3 with the mods--it's the best headphone amp I've ever heard and I actually prefer the plain jane looks, and am only using one input.
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HR-1,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th x2, CSP3-25th.Taboo Mk IV; Rega RP3 w/25th mods PS Audio: DMP+DSD,P15,NPC,PowerBases,AC-12 pwr cbls, Statement spkr cbls;Mapleshade:Samson V3; Oppo UDP-205; VooDoo:Cremona+Amati intrcncts, Iso-Pods;headphones:PM1,HD800S,ZMF Ori
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s3steve
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Posts: 42
Re: CSP3 with 25th mods
Reply #6 - 09/30/20 at 19:53:12
 
Thanks Lon!

So does that make mine a CSP3-25?
If so I'll have to update my profile!!

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CSP3-25
SE34I.5
Ariston RD11
PS Audio GCPH with the Underwood upgrade
Pioneer N-50 Network Player
Altec 605B's in a 620 Cabinet
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Lon
Seasoned Member
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"Love without
guts is
worthless!"
Philip K. Dick

Posts: 17257
Re: CSP3 with 25th mods
Reply #7 - 09/30/20 at 20:02:59
 
A few of us were calling the CSP3 with the mods a CSP3-25 BEFORE Steve introduced the matching preamp to the UFO-25 and denoted it as a CSP3-25. Since then I have been referring to my CSP3 as a CSP3 with the 25th Anniversary Mods.
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HR-1,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th x2, CSP3-25th.Taboo Mk IV; Rega RP3 w/25th mods PS Audio: DMP+DSD,P15,NPC,PowerBases,AC-12 pwr cbls, Statement spkr cbls;Mapleshade:Samson V3; Oppo UDP-205; VooDoo:Cremona+Amati intrcncts, Iso-Pods;headphones:PM1,HD800S,ZMF Ori
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s3steve
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Posts: 42
Re: CSP3 with 25th mods
Reply #8 - 09/30/20 at 20:13:36
 
Works for me.

Thanks again Lon!!
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CSP3-25
SE34I.5
Ariston RD11
PS Audio GCPH with the Underwood upgrade
Pioneer N-50 Network Player
Altec 605B's in a 620 Cabinet
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