Eufonika (Valve amps from Poland)
Mar 17, 2024 at 3:30 PM Post #1,322 of 1,387
Mar 17, 2024 at 3:31 PM Post #1,323 of 1,387
Mar 17, 2024 at 6:23 PM Post #1,327 of 1,387
How is it compared to the OTL?
It’s great in that it will drive all my planars and low ohm beasts just as nicely as my verite opens. The otl doesn’t pair at all with planars but is the pick over the otc for my verities.
 
Mar 17, 2024 at 6:24 PM Post #1,328 of 1,387
mmmmmmmmmmarvelous! :sweat_smile:

Or it could be like Wieslaw's naming convention for his dual mono amps such as the H7M.
He never told me and I never asked. I will ask him though.
 
Mar 17, 2024 at 6:30 PM Post #1,329 of 1,387
Mar 18, 2024 at 3:16 AM Post #1,331 of 1,387
I have the H33m and can confirm it is dual mono. It is a dual mono offshoot of the H20, but overpowered.
Ok - thanks. I wouldn't have a clue. He did put heat sinks on sides of the first one but not on the second. But that may be completely irrelevant.
 
Mar 21, 2024 at 1:21 PM Post #1,332 of 1,387
Hi, just received my H5KPCU, is the voltage switch in the right position? Sounds good but it's a bit noisy. Maybe it only requires tubes burn in.

Edit: tubes also started being veeery hot, more than my old little dot and when I felt something similar to burning smell I immediately shut it down.
 

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Mar 21, 2024 at 2:13 PM Post #1,334 of 1,387
Hi, just received my H5KPCU, is the voltage switch in the right position? Sounds good but it's a bit noisy. Maybe it only requires tubes burn in.

Edit: tubes also started being veeery hot, more than my old little dot and when I felt something similar to burning smell I immediately shut it down.
Is that a 6V driver tube? Sure looks like a 6V heater getting 12V. Very bright!

I don't know the orientation of the 6/12V heater switch. In cases of heater uncertainty, the best approach is to use a 12V tube (12SN7). Either the 12V tube gets 12V and everything is fine. Or the 12V heater gets 6V and it sounds off, but doesn't damage the tube as quickly as a 6V tube getting 12V on the heaters.
 

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