Koch Amps Superlead, tube-powered guitar preamp, 1x 12AX7 tube, clean channel with volume control, overdrive channel with gain & volume controls, silent switches, 3-band eq, non-buffered pre-fx loop, fully buffered post-fx loop, monitor output with (OdbV) for power amp, (-10 dbV) to fx return and (re-amp) to clean channel input, balanced xlr DI rec/pa output with speaker emulation, remote control input (for midi switcher or external switching), 12VAC power supply input (power supply is included), 9VDC/200mA power supply output, dimensions: 13.2 cm w x 20.5 cm d x 6.4 cm h, weight: 1.2 kg