2014年3月20日 · I put the 12AT7 in V1 and it made the clean channel volume a little more forgiving with the sweep of the volume knob and it dropped the volume a good bit. Is the …

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 …

2020年2月5日 · Mine had JJ's and a 12AT7 in the PI but I switched to some old (not vintage) Mullard EL84s and Chinese/Ruby 12AX7's all around except a Sovtek LPS in the PI and like it …

2020年7月1日 · Howard Kaplan (who I think may be a TGP member) stated not to use 12AT7's in these amps. Not sure what the reasoning is but I wasn't going to debate it with the engineer of …

2017年3月25日 · A 12AT7 is used in various locations, theres one in my Z Lux for the reverb. I see a couple suffixes that I do not know about. lol Z-LUX V1: Mullard ECC83 (12AX7), V2: JJ …

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 …

2017年5月23日 · I narrowed my search down to two speakers as I need to tighten up the bottom end and slow down the rate of distortion which now starts at 3 on the dial. The speaker swap …

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 …

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 …

2013年8月3日 · I just picked up a used Dr Z Maz Jr and was wondering if anyone can please help ID the tube functions. V1 and V2 seem to be control tone and gain, but what does V3 (12AT7) …