In an effort to tinker with more things, I have ordered a new set of tubes for my Vox AC30 Black Comet. Here’s what I ended up going with:
- V1: Tung-Sol 12AX7
- V2: Tung-Sol 12AX7
- V3: JJ ECC83-S/12AX7
- V4: JJ EL844
- V5: JJ EL844
- V6: JJ EL844
- V7: JJ EL844
I went with the Tung-Sol valves for the majority of the preamp because they are apparently really nice for bringing out the “chime” the AC30 is known for.
The phase inverter was really just a toss in the wind. I kind of wanted to go with a 5751 because they are known for pushing a lot more clean tone to the power amp, but I don’t want too much clean headroom, so I ended up with the JJ ECC83-S. I read good things and it’s supposed to be nice in the PI spot.
The power amp was a dice roll between the JJ EL844 and the Mullard Re-Issue EL84. The Mullards are supposed to be really nice, but I kept reading about the big bottom end and the high gain…and I’m really not about that. I love my clean and like to add bottom and gain with more control. The other factor was that the JJ EL844s are the lower power version of the JJ EL84, which means lower volume, but same tone. Since I play in the house, I don’t mind if I can crank the amp a bit higher for breakup without crazy volume.
My Shure SM57 comes this week, so I’ll post a before/after audio clip of what I end up with.