2021年6月5日 · Next, the expensive Mullard 12AX7 long plate is also very low distortion and can be a little polite, perhaps a little dark sounding, but ultra clear sounding. If your amp is a bit …

2017年12月17日 · The difference between a 12ax7 and a 12ax7a has to do with the way the heaters are wired. The 12ax7 can only be used in circuits where the heater circuit is wired in …

2019年1月1日 · -3 sets of Matsushita 12AX7/12AU7-2 sets of Hitachi 7025/12AX7/12AU7-2 sets of TJ Full Music 12AX7/12AU7-1 set of RFT ECC83 plus 5 RFT 12AU7 (the RFT …

2024年2月16日 · In the end your wallet will be lighter, and the overall improvement compared the newer Russian made Genalex Gold Lion Gold Pin B759/ECC83/12AX7's will be a …

2021年6月5日 · Frankly, buy NOS GE 12AX7/7025 short plate for about $80 a pair (Brent Jessee) and never look back. GE 12AX7 without the 7025 are not likely the same tubes and definitely …

2018年8月3日 · The Mullard 12AX7 long plate square getter is the best I ever heard. Seller stated Telefunken 803s are not as good at $1K+ each. A tube I thought is better than the 3rd place …

2018年9月8日 · The Mullard 12AX7 long plate square getter is slightly better, but high cost may not be worth it. If you need a little more detail, the Raytheon 5751 windmill getter is also great …

2012年7月20日 · I was researching vintage 12AX7 tubes, and a pattern emerged - over a variety of brands and countries of origin, "long plates" are more highly sought after and command a …

2018年1月29日 · Further, the operating points are quite different with the 5755 passing just .150mA with Ep = 110V and Eg = -.95V compared to the 12AX7 passing about .5mA under the …

2021年8月26日 · I like the JJ. 12AX7 and 12AT7. I use the 12ax7 in my headphone amp and the AT7 in a preamp. I should say have used the AT7.... its a spare, it was replaced by a Mullard …