Has anyone bought the Psvane Acme 300B Vacuum Tube?

I decided to purchase the Acme's for my custom build 300B monoblocks some time ago after doing extensive research on all the top line 300B tubes, really became a crap shoot as all the nice 300B's have their proponents. My take is they're all nice and you'd likely be happy with any of them. There are instances of premature failures in some of them, but in most cases limited to certain amps. For instance I did find a thread with a few Acme failures in LIne Magnetic amps, bad batch of tubes or excessive plate voltages in the LM amps? Don't recall seeing more recent failures of this tube.

Anyway, the Acme's were a substantial upgrade over the Shuguang Black Treasure which based on reviews are likely the best of the lower grade 300B's. Far greater resolution and transparency, greater harmonic development, timbre far more natural than the Black Treasure.  I'd judge flavor as neutral with a touch of warmth, the warmth coming from the harmonic development, just right in context of my total system. I wouldn't want to go further in warmth, I like articulate bass without bloat.

I consider a top line 300B tube as mandatory for any equipment using the tube, really not hearing near it's full potential with the lower grade 300B's.

I did a lot of research before upgrading my Woo headphone amp. The reviews pretty unanimously pointed to Takatsuki 300Bs. The difference between stock and the Takatsuki was phenomenal. While I did not buy and listen to half a dozen… I have been amazed with the performance… I would go with the well reviewed and this highly regarded brand. It is in the same price range.

Check out this 300 challenge.  It might help in your decision.

While above is interesting for those directly in room, youtube videos very poor way to make any audio evaluation. You're listening to unfamiliar systems through relatively low quality digital. The listening impressions may be valid for people producing video, the sound portion has no validity for the listener.

As I previously mentioned, in checking around the web you'll mostly find satisfied users of all the boutique 300B tubes. This tells you one of two things, either all the boutique tubes are nice or its all confirmation bias. You may find a particular 300b is preferred for a specific component, but overall they all get high marks.

@sns As I previously mentioned, in checking around the web you’ll mostly find satisfied users of all the boutique 300B tubes. This tells you one of two things, either all the boutique tubes are nice or its all confirmation bias. You may find a particular 300b is preferred for a specific component, but overall they all get high marks.

Agree 100%. In my opinion all of the premium tier 300b tubes are excellent. Invariably some are going to be better matches than others in a particular circuit or amplifier (Even depending upon overall audio system voicing).

I purchased the Takatsuki when first available for the American market (Bought directly from Japan) it’s a superb 300b. I feel the same with regard to the Elrog I once owned.I have no doubts that the Psvane Acme, Linlai, and Current production Western Electric are superb choices.

No one can claim that one is unequivocally better than the others. Too many variables come into play. My 300b SET amplifier sounds brilliant but is a bit hard on the tubes I have learned over the years.

So in my circumstances the exceptionally rugged and durable (And splendid sounding) EML XLS has worked out best long term for “me”. The higher cost upper tier 300b tubes are worth it in a high quality amplifier. You’ll get the most out of a good amp with them onboard.

Charles