The Herbert is a 6-power tube guitar amplifier head. It features 3 channels, for 3 distinct different guitar sounds. It's main difference from the VH4 models are in voicing, circuit design, and general layout. Overall the Hebert has a more familiar, slightly looser feel than the VH4, without losing much of the Diezel signature definition and tightness. Simply put, the amp is a player's amp, forgiving and ready for whatever one's soul and mood desires.
Channel one produces a warm and sparkly clean sound, reminiscent of a piano. It has immense overhead, whenever a very loud, but crystal clear clean tone is desired. Channel two is a dual purpose channel, it's two voicings can be selected with a toggle switch. The (-) mode of this channel has dynamics to range from a vintage type clean sound to a broad crunch. The (+) mode of this channel offers similar voice, but much more gain. Both modes provide ample pick sensitivity. Channel three offers a high gain structure, but again with very good pick sensitivity and easy control. The distortion structure is transparent, but yet percussive and brutal.
Herbert Amplifiers have a switchable adjustable mid cut feature, assignable to any or all channels. This adds tremendously to the versatility of the amp. The mid cut feature has a compensation control called "level". This allows the guitar volume to be compensated in the event of the mid cut being engaged in mid song. Herbert's master section features dual global volume controls, and global presence and deep control knobs. Master effects loops are switch-able serial loop, parallel loop, and serial loop. Channel selection, mid cut, switchable serial loop, global master volume selection and mute are all foot swichable with a midi pedal.
Power amp section: 3 dual tube push/pull circuits with separate biasing capability. 3 matched pairs of either EL34, 6L6, 6550, KT66, KT88, 5881 etc. can be individually biased. It is possible to mix 3 different tube types in the Herbert power amplifier section. Pairs are 1-6, 2-5, 3-4. Pre-amp tube selection 5 - 12AX7s. 128 program Midi control, 7 channel capability.
Watt: 150 to 200+ depending on type of power tubes used
Rectifier: Solid State
Front panel: Independent Controls For 3 Channels - (Gain on 2&3, Volume, Treble, Mid, Bass), Gain Switch on 2, Switchable Adjustable Mid Cut & Level Control, 2 Switchable Master Volumes, Deep, Presence, Channel & Function Switches (Loop, Mute, Store) Power & Standby
Back panel: Multiple Speaker Outputs (4, 8 & 16 ohm), Midi In, Midi Thru, XLR In, 3 Effects Loops (Switchable Series, Series & Parallel with Mix Control), Tuner Out, Compensated Direct Out, Power Cable Recepticle & Main Fuses
Class type: AB
Number of Channels: 3 Midi Switchable Channels (Each With Fully Independent EQ, Voicing, Volume and Gain on 2&3), 2 Selectable Gain Modes On Channel 2
Master volume: Dual Midi Switchable Global Master Volumes & Independent Channel Master Volumes for 2 & 3
Power Tubes: 6L6, EL34, 5881, 6550, KT66 ( 2 or 3 tube types may be mixed in matched pairs - Each pair has it's own bias adjustment)
Number of Power tubes: 6
Preamp Tubes: 12AX7
Number of Preamp tubes: 5
Circuit Type: PCB
Effect loop: 3 Master Effects Loops ( Switchable Series, Series & Parallel with Mix Control)
Direct out: Compensated Direct Out and Tuner Out
Cabinet Type: Head
Cab Color: Black
Sales Price: $4,399
Rental Price: $125 Per Day or $500 Per Week