Mesa Boogie Mark IV Specs:
85 Watts, Simul-Class™ Power / 4x6L6, 5x12AX7
Fixed Bias for Consistent, Maintenance Free Performance
3 Channels w/Independent Gain & Master Controls (Rhythm I, Rhythm II & Lead)
Independent Treble & Presence Controls for Rhythm I & II (Bass & Mid combined)
Fully Independent EQ for Lead Channel (Bass, Mid, Treble & Presence)
Multi-Stage “Cascading Gain” Lead Channel (Lead Gain + Lead Drive)
Lead Voicing Switch (Mid Gain/Harmonics)
Pull Fat (Rhythm II & Lead Channel)
Pull Bright (Rhythm I & Lead)
Pull Shift Presence Controls (Rhythm II & Lead)
Assignable 5 Band Graphic EQ
Assignable FX Loop
Slave Out w/Level Control
Spring Reverb
Output Level Control (over all channels)
Full Power/Tweed “Variac” Switch
Simul-Class/Class A Switch
Pentode/Triode Switch
Record Out w/Level Control
Silent Record Mute Switch (Pull Output Level)
Fan Cooled
External Switching Input
6 Button Footswitch (Rhythm I, Rhythm II, Lead, Lead+EQ, EQ (Graphic) & FX Loop)
Slip Cover