I had a problem with the bass that when I turned the bright switch on, the bass would go dead. With the switch off, it appeared that the bright was always on because it had a lot of high frequency noise. I checked the circuit board and all the voltages looked pretty good, so I decided to solder all of the solder joints on the board. Now it seems to function correctly, but the gain out of the bass seems pretty weak and overall the bass is pretty noisy. Is this typical for the RD Artist?