Mesa Boogie M9 Carbine Head, bass head, 600 Watt @ 4 or 2 Ohm, 450 Watt @ 8 Ohm, Preamp 12AX7 Tube, Passive/Active Input switchable, Control for Gain, active Bass ( pull Deep Function), passive mid, 5 Position Active Mid.-Voicing Switch, Active Treble and Master Volume ( Pull Mute), Tuner Out, Effect Loop with Hard Bypass Switch, Symetric XLR Out Ground Lift & Pre/Post, Speaker Output: 2x Speakon and 2x 6,3mm Jack, 19" 2HE, weight: 12,5 kg