2021年9月16日 · Gotcha and good idea on the trade as if you need to, you can replace the 12AT7 with an NOS Jan for not much more than a new one (not so with 12ax7). EH a bit brighter, JJ …

2016年10月11日 · This is a special non-microphonic and low hum version of the 12AX7 that was produced only by Sylvania. This should make an excellent replacement for any audio …

2018年1月23日 · Any 12A_7 tube (12AX7, 12AT7, 12AY7, 12AU7, and their industrial equivalents or near-equivalents like 7025, 5751, 6201, 6072, 5814, etc) can be used in any socket marked …

2017年3月25日 · Well the 12AX7 is a great preamp tube. You will see the EF86 tube in amps that want to have the vintage Vox thing going on. Vox switched to a 12AX7 in like 63? I forget but …

2018年9月28日 · So, the tubes I have in the Hiwatt 18W clone right now are as follows: V1: Early 60's RCA 5751 2 mica Black Plates, V2: Early 50's RCA LBP w/ Bent Horseshoe Getter, V3 (I …

2012年8月17日 · What tubes have you tried? What did you think? Right now I have an NOS JAN-Philips 12AT7 on the right side (OD) and a Tung-Sol 12AX7 on the left (boost/OD). I think it …

2009年12月17日 · v1 = channel 1 "Normal" 12AX7 v2 = channel 2 "bright" 12AX7 v3 = Reverb 12AT7 v4 = Gain Stage 12 AX7 v6 = phase inverter 12 AX7 v7 = power tube 6L6(gc) v8 = …

2009年3月12日 · Hi there! In an attemp to get more clean headroom out of my Hot Rod Deville 2x12 I tried replacing the preamp's V1 12AX7 with a 12AY7 and the V3 12AX7 (phase …

2012年5月19日 · What do you prefer? I had a GE 12AT7 go out in a BF Bandmaster. I had a NOS Mullard that just didn't feel right. So I looked around in my box-o-tubes and found a JAN …

2012年8月4日 · I have the following tubes on hand: GT-12AX7-R x 4 GT-ECC83-S x SOVTEK 12AX7-LP EH-12AX7-EH RUBY 12AX7-AC5-HG+ RUBY 7025SS/12AX7A JJ-ECC803-S x 2 …