I've been wanting to build an amplifier with an "exposed" circuit board
for awhile. I finally got around to it. My favorite sounding chip currently, the TPA
3110 was installed in this handsome Acid cigar box. I added an analog DC volt meter below the board. Since I use a SLA battery, it's nice to see what my charge level is. I found out yesterday that the TPA3110 shuts down at 7.8 volts. It took me about 3 hours to charge my SLA battery up to 12.5 volts. I hadn't charged it in over a month!