Registered User
Join date: Oct 2012
21 IQ
Hey everybody
Picked up an old ACE Tone 301 amp for my son and need to retube it, the back cover with the schematics is missing and I can't read the tubes to get replacements and I haven't found anything about this amps tubes on the internet. Anyone know the tubes for this amp?
Grumpy Old Tech
Join date: Oct 2009
2,565 IQ
Read what's written on the tubes that are in it.
Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band
Join date: Dec 2009
1,405 IQ
Good Luck. The power tube in that amp is a 50hB26. Incredibly rare tube. You can have the circuit reworked to run a 6L6 though.

The preamp tubes are 12AX7s which are pretty much the most common tube around these days.
Registered User
Join date: Oct 2012
21 IQ
Thanks for the info Dan!! looks like I have a little project now