Particle Accelerator - Alembic F-2B clone

[vigilante398]

Thanks for the cool project, @vigilante398 !

Have you tried running clean preamps like this with submini tubes, e.g. 6n16b and 6n17b? If so, have you noticed any sonic difference compared to a 12ax7?

When I was first getting into tubes a few years back I had originally designed Particle Accelerator for 6N17B/6N21B. It sounded great and a lot of people liked it, but the submini tubes are more difficult to source, more difficult to swap, pull more current, and are much more likely to go microphonic. That's why I started moving over to 12AX7.

6N21B is also interesting because its gain factor (mu) is 82, putting it nicely in between 12AX7 at 100 and 12AT7 at 60. It has a great-sounding breakup and does well in tube overdrives. I also used it in a Hiwatt preamp, Ampeg preamp, Soldano preamp, and even Mesa preamp.