This nice sounding pre came in for conversion to remote volume control. A small remote module was installed internally, and a 9v regulated power supply made to take power from the heater circuit. The original Alps Black Beauty pot was replaced with a TKD motor pot, one of the best-sounding pots around. Finally the remote infrared sensor was N stalled to replace the power on led, to negate the need to drill the front plate. The finished unit works well and, most importantly, sounds great!