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BRAND: Mesa Boogie

MODEL: Quad Preamp

FUNCTION: Rackmount Tube Guitar Preamplifier                            

PRODUCT DESCRIPTION: This listing is for a 1989 Mesa Boogie Quad Preamp Rackmount Tube Guitar Amplifier  

This item comes from the personal recording and touring arsenal of composer duo Wendy & Lisa (also known as Girl Brothers) and Prince's band, The Revolution.

Techno Empire is selling a number of cherished pieces from their collection directly on their behalf.


  • Handwritten QC Date on inside:"2-17-89" 
  • Serial Number: Q-834
  • Two Channels, Four Modes
  • Channel 1 - Similar to Mark IIC
  • Channel 2 - Similar to Mark III
  • 2 x Rhythm + 2 x Lead for Each Channel
  • 8 x 12AX7 tubes
  • 2 x 3-Spring reverb tanks, different sizes, combined into one 3D Sounding Reverb
  • 5-Band graphic EQ for Each Channel
  • 5 x EQ shift functions per channel to change the sound
  • Hand made in the USA
  • 8 x 1/4" Jacks on rear for EXT. Switching (On/Off) of each individual mode/function by Single-Button Footswitch:
    • Rhythm Ch.1 and Ch.2
    • Lead Ch.1 and Ch.2
    • EQ Ch.1 and Ch.2
    • Reverb (Both Channels)
    • Boost (Both Channels)

ACCESSORIES INCLUDED: This item comes as seen in photos, and does not include any accessories.

  • FU-2 Footswitch, which allows instant access to all modes, NOT Included (We are including a single-button foot switch that will allow each mode to be turned on/off individually).    


  • 25' Audio Technica Supercable 1/4" Instrument Cable
  • Morley RFS-1 Single-Button Foot switch (To be used w/ the included instrument cable for turning individual modes on/off).   

PHYSICAL CONDITION: Very Good - For its age, the amp is in great condition. There are several light scratches on the top and bottom surfaces. The metal switches have some light oxidation. There is some residue from lines drawn on the knobs to notate settings, as well as "P" written on some knobs to indicate "pull" for those settings. The lines and p's have been cleaned off but are still slightly visible. Overall, the amp is fairly clean and in very good physical condition for its age. 

WORKING CONDITION: Very Good - The amp sounds great with any setting selected. This is an ultra-versatile preamp that can be used to get nearly any amp sound for studio or live use. Occasionally during testing, some of the pots on the second channel would get a little scratchy and need to be sprayed with contact cleaner or exercised back and forth, however, that is the only issue we found. Otherwise, the amp sounds and functions great! Overall, it is in very good working condition. 


UNPACKAGED DIMENSIONS: 19" x 7.5" x 14.5"

Listed4 years ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.learn more
  • Quad Preamp
  • 1989

Techno Empire

North Hollywood, CA, United States
Joined Reverb:2014

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