2006年1月13日 · The 12BH7A is electrically identical to the 12BH7. The only difference between the two is that the heater of the 12BH7A is designed for use in series-string heater circuits in …

2010年4月20日 · Looking for strong, neutral sounding tubes for driver use. I don't need any added lushness. I'm actually looking for a bit more linearity and clarity. Both new production and …

2015年1月24日 · My favorite of the RCA 12BH7 were the very earliest version with "winged" black plates. Late 1940s - early 50s.

2023年3月27日 · Driver tubes don’t make a difference in sound. No….so any well constructed 12bh7 is ok. Tungsol, rca, etc. where tubes really make a difference are in signal tubes …

2022年7月9日 · I very much dislike Gold Lions and will not be buying Russian tubes ever again. I got some really great NOS GE 12BH7a from Jim McShane that I've been super happy with. …

2005年1月3日 · Reason I'm asking is... I can't find decent 12FQ7's anywhere at a sane price... Thanks for any help!

2023年7月16日 · What about the sound of these 12bh7 valves? I read contradictory opinions. One salesman tells me the following: "Certain brands have certain tonal...

2010年4月20日 · 12BH7/12BH7A Recommendations Please. Thread starter JackD201; Start date Aug 8, 2013; Forums.

2021年9月10日 · The New Elekit 8900 DIY Kit Allows Choice of 300B or 2a3 Tubes Without Mods. Discussion in 'Audio Hardware' started by Sugar Man, Sep 10, 2021.

2020年7月21日 · 12BH7A NOS/NIB RCA Anyone has any experiences? These seem to be amc branded. jnthn_7, Jul 21, 2020 ...