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Is that his amp which is restricted to just 6L6? I know he designed one for just 6V6 tubes. If it can also run EL34-type tubes then you might try Gold Lion KT77 tubes which do produce more air and high end detail.
I dont know what are your personal taste in your room, but I think you most stick with single ended triode with cheap tubes as EL34, KT88 KT90 as avaliable in the Inspire line which delivery 5/10W.300B is just a hi priced fairy tale that will give you lots of expenses and short life, you need a 100dB speaker to pair with a small SET amp:http://www.decware.com/newsite/SE34I.htm
These?http://www.ankaudiokits.com/Interstage-Quad-C-Core-300B-Power-Tube-Amplifier.htmlQuite the task. I would have to take the the cost of re-tubing into consideration but you may not have that limitation. If not then I say go for it!
While I’m at it I was considering switching over to the Audio Note Interstage 300b mono blocks that use a 6SH7 driver and 5U4 rectifierthats parallel triode SE. I’ve always been curious about 300b but not entirely sure about the Sonics. I am essentially looking for something a bit airier and additional top end with that same rich mid range. Do you guys this switching to the 300b would accomplish this?
I have the ANK SE 8w Interstage mono blocks and can vouch for their sound quality. If you can do it, single ended will give you the best performance for 300b tubes. Going with parallel or a push pull design reduces a lot of the "airy magic" attributed to 300b's. A good transformer coupled preamp (ANK L3 or L4) with excellent detail retrieval will further enhance what a SET 300b can do. Mine are paired with an ANK L4 and Charney Maestro 100db horns with excellent results. Chris
Thanks Chris! I like ANK but wonder if hard to build. Thinking it overI have decided to go for 300b set or KT66 set. Any suggestions.I like the Greece 300b mono Tsakiridis.
As of yesterday I am using this amp beyond successfully with a pair of Charney Audio Companion speakers with AER BD3 drivers.
I built a pair of the ANK parallel 300B SET interstage monoblocks with C-core transformers, although I made a lot of changes to the design - mostly around the power supplies, and built my own custom chassis (a bit bigger to make room for the additional circuitry I added). I have a fairly comprehensive build thread here - https://forums.stevehoffman.tv/threads/ank-300b-interstage-monoblocks.1112018/#post-27958720The build instructions are quite good and comprehensive. If you are comfortable soldering and with reading instruction manuals, I think the ANK design is relatively straightforward to build. I don't have a lot of experience with other tube amps, but I have a number of other DIY and commercial amps (including a pair of Pass XA60.8 monoblocks), and the 300B amp is pretty exceptional. My main system uses powered woofers, so I use the 300B amps from 170Hz up. My current speakers are 98db/w sensitivity (GR-Research Line Force), but I was using the amps with 92db/w speakers (GR-Research NX-Otica) and the amps played plenty loud. I am using Western Electric reissue 300B tubes - not the ones that came with the kit. I used the kit tubes briefly before I bought the WE tubes, and the amp sounded quite good, but the WE tubes are a definite step up - particularly with vocals which are absolutely stunning.
Not difficult made that choice, KT66 are a audiophile tube, very linear, transparent sound and cheap, can be substitute with EL34,6550,6L6,KT77,88,90. the KT66 is everything the 300B is not.300B is not even linear, hype.
