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Torii MK4 - Tube Rolling and Some Observations (Read 9848 times)
mac48025
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I can resist
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temptation

Posts: 10
Re: Torii MK4 - Tube Rolling and Some Observations
Reply #105 - 01/10/17 at 21:38:57
 
Mark, the tube Steve recommended is the Siemens PCC88/7DJ8. Not sure if those designations indicate the year they're from or not. I'm told they are very detailed with a gorgeous airy high end, silky vocals and tight bass. Steve mentioned getting long bottles but Andy at Vintage Tube Services had no idea what that was........and that's a first for him! I constantly floored by his knowledge of tubes and vintage gear. I also ordered a pair of Mullard input tubes, supposedly the antithesis of the Siemens. I want to see which input tube works best in my system.

Output tube question. I'm told the RCA 6L6GC black plates should last about 20,000 hours in the Torii. That seems high. Many seem to replace theirs yearly. Will the tubes actually last 20,000 hours but lose their fidelity much sooner?
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PS Audio P300>PS Audio Perfectwave PMT & PWD>Decware Torii mk IV>NOS Western Electric 14g speaker wire>Tekton Double Impacts
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Paul64
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Re: Torii MK4 - Tube Rolling and Some Observations
Reply #106 - 02/18/17 at 23:45:45
 
Hey there. I've gone through 2 quads of the Gold Lion KT66s and 1 set of the KT77 GL only getting about 700-800 hours on each quad before they sound tired.  Is this normal?  Does anyone have other suggestions on something that might last longer and not be NOS expensive??  Just curious.  THANKS!  PS....can you use KT150s in the Torii MK4??

Regards,
Paul
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RW82
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Re: Torii MK4 - Tube Rolling and Some Observations
Reply #107 - 02/19/17 at 01:03:44
 
Mine always ate tubes pretty quickly. I settled on the KT77's as my favs. I wouldn't go NOS for output tubes. I doubt you'll get any additional  mileage out of them.
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MBP 24 bit Audio via Oppo 103, PS Audio PWD Mk II DAC, Z-Stage, Pass Labs 30.8, Decware DM 947 Speakers.
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