I didn't read this message in time. I bought a "modded" thunderbass at a pawn shop in the winter of 2010-11 with 2 prongs and what I thought was a killer deal! Sounded great. Had a "bunch of funny standby switches". No manual and only a wink and a nudge about the cool new amp i'd just bought. We never touched that polarity switch thinking NOTHING OF IT! worse it's already been re-covered in some kind of grillcloth on the aluminum chassis panel.

At practice it got EVEN Worse I had a buddy turn this thing on, while plugged into an old strat, (THANKFULLY WITH NO STRAP). He flipped all the switches like an idiot, after hitting the standby he flipped the polarity switch. It Knocked me on my ass, dropped the guitar instantly and the idiot was laughing at me! Pulled the wire out of the wall and we all shrugged it off, but I knew exactly how close that bullet had been from that day forward. Got it 3 pronged at a local repair shop. Creepily enough the amp tech died a few years later. totally unrelated but still the vibe has stuck with me all these years. I play it through a silvertone 8 Ohm 6x10 "Jack White Cab". Bought the whole lot for $270, and over 200 of that was on the amp. another $120 later i got it grounded. Sounds killer with this old tube ART DST-4 pre-amp, another banged up piece of gear from the web.

I learned the hard way, ALWAYS take it to a tech first!