This is the tube the amp came with (in the gain hole). Lead playing sounds very
good, a little nasal (in a positive way). As stated before, the humbuckers on my guitar are very hard for playing crunchy rhythm, and the 12AX7WA has major problems with this. The rhythm sound also tends to get hollow. The clean sound is good, with enough richness and clearity. I'm not sure if Rivera amps are still shipped with this tube, mine's a few years old.
good, a little nasal (in a positive way). As stated before, the humbuckers on my guitar are very hard for playing crunchy rhythm, and the 12AX7WA has major problems with this. The rhythm sound also tends to get hollow. The clean sound is good, with enough richness and clearity. I'm not sure if Rivera amps are still shipped with this tube, mine's a few years old. Information from http://www.fbk.eur.nl/BIT/MHM/gear/preamptubes.html
