I do have some matched nice NOS EL34/6L6/6V6’s. Also a bunch of NOS 6SN7/6SL7’s. Two Hammond 125CSE (8W 60mA, 2.5, 5, 10K) opt’s and a PT Hammond 290ABX.
Never built an HIFI amp before (many guitar amps) but was thinking of a stereo SE amp. Any ideas on what will sound best?
Never built an HIFI amp before (many guitar amps) but was thinking of a stereo SE amp. Any ideas on what will sound best?
I don't know which would sound "best" but this one sounds very good.
https://hifihaven.org/index.php?threads/sakuma-schade-6v6-amp.8961/page-2
https://hifihaven.org/index.php?threads/sakuma-schade-6v6-amp.8961/page-2
The local feedback from plate to plate makes the load on the driver tube greater. A power tube has little trouble with this. I've seen EL84 used as driver tubes in similar ways. It sounds excellent. I'm using mine with parallel feed outputs which I bought from Musical Power Supplies in the US and Bottlehead plate chokes. The FR is flat from below 20Hz to over 60kHz at 1W. At the full 4W it only slightly less on the bass. Still -3dB in the low/mid 20's.
Might try that. Or maybe using a 6K6 as the driver🤔. My son wouldn’t use a separate preamp when playing vinyl. Might have to incorporate a 6SQ7 or 6N7 up front
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You might want to decide on how much power you need - which depends on your speakers and expectations for bass etc. Those OPT's are rated for 8W and 60mA and you may just want to push as much through them as you can and that for me points to the use of the EL34. I prefer the sound of triode-wired but that's based on very little experience so far. If you have sensitive speakers the triode-wired 6V6 is often reported to sound superb, even compared with a 45 DHT but power output will be low. Anyhow, my interests would lead to a triode-wired EL34 output stage and driver maybe a mu-follower using a 6SN7 (or 6SL7 - depending on gain required) on the bottom and 6V6 on top - never tried it myself but it's appealing and makes use of the tubes you have.
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