: : : : does anyone know where I can get an electrical schematic or a user’s manual for the ACE TONE VM-80 mixer amp? Maybe you’ve already tried this, but I have an Ace Tone Model 601 guitar amp, that has a schematic on the bottom side of the cover. I just removed the cover and looked on the bottom. This was a very handy thing for me since the power tubes were missing altogether and they were listed in the schematics. As a side note I also found a great place to find virtually any tubes you may need @ http://www.thetubestore.com Hope this helps and let me know if you come across anyone with info or documentation for my Ace Tone 601. I am desparately short on info regarding it. Daniel