APPJ PA0901A 6N4+6P14 Mini tube Amplifier Black A minimalist integrated amplifier with one pair of RCA inputs. Passive volume control to attenuate the output of its enhanced classical tube circuit comprised of a 6N4 twin triode feeding a single 6P14 per channel. Advanced switching power supply to deliver a 3.6 watts output per channel Tubes: Driver - 6N4 Power - 6P14 Color:Black