The Little Mark Tube gives the warmth and richness of a tube preamp or the clean attack of a solid state preamp… or a mix of both! On the front panel there are two inputs with separate gain controls: one 1/4″ jack and one combo jack that accepts either an XLR or a 1/4″ cable. Additional features include switchable 48V phantom power for the XLR input solid-state/tube mix control four bands of EQ VLE and VPF filters line out level control pre-post EQ switch for the XLR out (on rearpanel) and mute control (push-pull on the master knob). Inputs Input 1: impedance 500 Kohm max. voltage 15 Vpp Input 2 (Balanced XLR/1/4″ combo): balanced impedance 500 Kohm max. voltage 15 Vpp phantom power 48V Effect Return: impedance 33 Kohm max. voltage 10 Vpp Controls Gain 1: -60 dB to +23 dB range Gain 2: -60 dB to +23 dB range Mix: mixes tube and solid state gain Master Volume: Line Out Level Ground Lift: switch on rear panel Pre/Post EQ: switch on rear panel Mute: push/pull on master knob Equalisation Low: center frequency: 60 Hz; level: ±16 dB Low Mid: center frequency: 360 Hz level: ±16 dB High Mid: center frequency: 800 Hz level: ±16 dB High: center frequency: 5 kHz level: ±16 dB VPF (Variable Pre-shape Filter): center frequency 380 Hz (cut) VLE (Vintage Loudspeaker Emulator): frequency range 250 Hz-20 kHz (cut) Output Line Out: balanced XLR max. voltage 20 Vpp Effect Send: unbalanced max. voltage 20 Vpp (pre-EQ) Tuner Out: unbalanced max. voltage 2 Vpp Speaker Out: speakon/1/4″ combo 1/4″ Other Weight: 6.55 lbs / 2.97 kg Output Power: 300W RMS @ 8 ohm 500W RMS @ 4 ohm