2a3 Tubes - Favorites?


Hi all,

Doing a quick search, it's been some time before specific 2a3 tubes have been discussed, and I just recently got a 2a3 SET amp, so I'm curious what tubes everyone prefers.

Ideally, looking for recommendations of tubes that are easily obtainable in 2024 - they can be new production like the Takatsukis, or easily sourced NOS. In the past when I've asked around in various places about tubes recommendations, I often hear about tubes that are near impossible to source nowadays, so I'd like to avoid those recommendations since they're pretty much irrelevant if they're unobtainium now.

Thanks for any suggestions!

mmcgill829

EML Meshplates are very nice. Should be noticeably better than either the Svetlana or Linlai tubes. I've tried Psvane Acme, KR, Sophia and NOS RCAs and keep coming back to the EML Meshplates. 

Running RCAs.

I found that coupling caps make a difference also.  When I changed from the EH/Gold Lions to RCA it was fairly big.

After upgrading the coupling caps, I put the EH back and the sound was pretty close.

Can I directly replace my 300Bs or 45s with a pair of 2A3s? I have a Supratek Grange, which offers two SET settings, one for 300B and the other for 45 (with extra filament heating). Your advice is highly appreciated!

@reimarc a 300B filament is 5v/1.2a while a 45 is 2.5v/1.5a.  A 2A3 is the same filament voltage as a 45 (2.5v) but requires more current (2.5a).  So, a 2A3 may work on the “45” setting but only if the filament supply can provide the additional current.  Best to check with the manufacturer.