I sold my A-6000 for lower wattage single ended triodes - all you describe is regained. Parallel circuits are difficult to engineer and that is the trade off. But the A-6000 is far superior to push-pull - in my exceedingly subjective opinion.
300B Tube Amps with 15/16 Watts Per Channel?
Felix Audio makes the dual 300B amp "Lybra"--are there any other manufacturers of that gear?.Does anyone have experience using two each 300B tube amps modified to be two monoblocks with 15/16 watts output power each? If yes, did you hear any difference in the exquisite 300B sound other than more power? All experiences and thoughts appreciated. (Yes, expense is already noted)
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I had some 300b PP Zero NFB Mono’s with 20 Watts @ 4 ohms built by Ken Uesugi of Japan and they sound stellar and the price is a STEAL; my inter stage transformers are silver and made my Luxman which are different than the ones show in the link below: https://otomon.net/products/detail/72 I have been using mines for 11 months and they have been rock solid Wig |
@wig I am looking for 300b Zero NFB amps myself and the Otoman labs amp might be the ticket. Since most in US will be buying blind, could you describe a bit more of your experience with these amps ? What preamp are you pairing with it ? |
Sorry for the delay, issues with getting Agon to load and login. I am a Big proponent of tubes and over the years have owned some of the best SS Class A Amps but they have really not connected me to the music like tube equipment... I have owned a plethora of tube amplifiers and have 2 additional units on hand, 1 is a customized KT88 with 65 Watts and the other another KT88 but Class A @ 12 Watts and 100 Watts A/B. I knew I wanted to eventually try a 300b amp as the possibility of squeezing out 15-20 Watts in PP with Zero NFB was within reach, so I reached back out to Ken Uesugi of Otoman Labs, Japan and he confirmed that he could build me mono’s that would fit my rack and the power requirements I was wanting. Ken had my Mono’s built in about a month and shipped after the holiday rush to minimize shipping damages but they arrived flawlessly and packing and build quality was outstanding... Amps are as quiet as a mouse and they exudes all of the audiophile terminology but it’s without question that these 300b are more transparent yet with warmth than Any KT88 amp I have ever owned and the bass is much tighter and the top end is more refined, detailed and airy. The power supplies and transformers are massive and quality Tango and Luxman iron... My Pre Amp was built my another tube guru designer and builder, Radu Tarta... It’s a 4P1L direct coupled, filament bias, line output transformer coupled pre amp. It has that 2A3/45 tube sound but with more transparency and dynamics. I’m extremely happy with this combo and feel as I’m at a live event each night I sit down to listen 🎶 4P1L Line stage | simplepleasuretubeamps Wig |
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