Phil, Charles, et al.
I am a fan of the Takatsukis, but have not heard the Balloon KR 300b. That said, I can attest to the longevity of the Takatsukis. I have been using the same pair for about 5 years without any issues. I was fortunate to source a couple of pairs from Japan at a reasonable cost when they were first released. I have also found the dealers in Japan to be very accommodating - but the current price is steep and not negotiable.
While we tend to talk about output tubes and their variations, recently I have been trying different 6922/7308/etc. driver tubes and have been impressed by the impact - at least in my amplifier (custom made Ancient Audio 300b SET). I am currently using a carefully matched pair of Amperex white label, PQ shield 6922s. The difference is not subtle.
Gary
I am a fan of the Takatsukis, but have not heard the Balloon KR 300b. That said, I can attest to the longevity of the Takatsukis. I have been using the same pair for about 5 years without any issues. I was fortunate to source a couple of pairs from Japan at a reasonable cost when they were first released. I have also found the dealers in Japan to be very accommodating - but the current price is steep and not negotiable.
While we tend to talk about output tubes and their variations, recently I have been trying different 6922/7308/etc. driver tubes and have been impressed by the impact - at least in my amplifier (custom made Ancient Audio 300b SET). I am currently using a carefully matched pair of Amperex white label, PQ shield 6922s. The difference is not subtle.
Gary