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Conrad-Johnson It just sounds right |
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#21
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I think a lot of modern day tube preamps are hard on tubes. I have several that vary, CJ premier 14, et5, and Audio Research ph5 all eat tubes. Allnic h3000 and dehavilland ultra verve 3 tubes have lasted thousands of hours.
The old adage that signal tubes last 1,000 to 1,500 hours is complete bull for some preamps.
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Main System Basis 2200 Signature/Vector 4/Transfiguration Proteus Ortofon Cadenza Black Allnic H3000/CJ ET5/Mcintosh 501's Thiel CS3.6 Thiel CS6 MIT EVO 2 IC Straightwire Maestro II SC Shunyata Denali SV2 Shunyata Sigma XC Wywires Juice PC’s Kubala Sosna PC’s Dedicated 20 amp lines Porter Ports Arcici Ref Suspense Stand Rives acoustically designed room ![]() Shore House Basis 1400 Signature/Hadcock 228/Ortofon Jubilee ARC PH 5/Meridian 200/Meridian 263 DAC CJ Premier 14/Classe CA200/Thiel 3.6 Wywires Silver IC/Stereolab Diablo SC/MIT Z cord II |
#22
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Hey guys is the ET7 S2 clearly better than the ET5?
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#23
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Glenn... Canton Reference 9 Clearaudio SM Pro Focal Bathys JLA 10" Dominion Kuzma Stabi S w/MC & MM Magnepan 1,7i McIntosh MA8950 & MR88 Oppo 203 Roon Nucleus Rose Hifi RS150B Shunyata Gemini-4 Sony ST-A6B, TA-F6B, ST-J75 & PS-X75 Sorane SA1.2 & TA-1L Stillpoints LP1v2 WW Pt, Au & Ag Last edited by Formerly YB-2; 05-01-2020 at 06:37 AM. |
#24
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There are no hard and fast rules about how to achieve functionality.
Over the years, CJ has moved from more tubes in their linestages to fewer. This is consistent with their design intent of keeping circuits as simple as possible. This design paradigm has been adopted by a number of other manufaturers as well, including First Sound. These design principles are also consistent with Altschuler's TRIZ Principle of Ideality. My CT-5 has one tube per channel, compared to my Pr17, which had two. I'm still on the same set of tubes in my CT-5 for the last nine years now. The ET5 and ET7 have a single twin-triode tube for the entire preamp; one half of the tube for each channel.
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. |
#25
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I had an ET-3 SE. Had to replace the 6922 tube every 6-8 months. I sold it and bought a Luxman CL38U SE. It has 8 tubes 3 for the phono. I've had it for 2 years still dead quiet.
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