MINT CONDITION. Used a few times. Must pick up in Santa Cruz, California. Try it at my home. I didn't find the return policy and am not sure what it is, but if you don't like the amp after you see/try it you don't have to buy it!

Description from AI:

The Groove Tubes Soul-O 75 is a highly regarded, hand-built 1990s boutique amplifier known for incredible touch sensitivity and headroom. Running it with a pair of 6L6 power tubes highlights its famous, harmonically rich clean tones, deep lows, and smooth, gritty overdrives. 

Specs & Design

  • Power Output: Delivers roughly 30 to 75 watts, depending on the power tubes and operating class. 
  • Tube Versatility: While prized with 6L6s, the fixed-bias design and specific transformer allow you to swap in 6550s, EL34s, KT88s, or KT90s without needing a rebias.
  • Operation Modes: Features selectable tube configurations (Class A or A/B), allowing you to shape the amp's headroom and breakup characteristics. 

            • 3 Channels: The front panel typically features two primary channels (Clean and Scream/High-Gain). A "3-channel" designation refers to the footswitchable "blend" mode where Clean and Scream are engaged simultaneously.

  • Preamp Configuration: You can run them independently or blend them together. Each channel has dedicated 3-band EQ, Gain, and Volume controls, plus "Normal" or "Gnarly" voicings.

Unique Features

  • Rackmount Integration: The amp chassis essentially functions as an isolated rack unit inside its head or combo shell. This unique casing leaves a spare 1U or 2U rack space above the chassis, which is perfect for integrating external multi-effects processors.
  • Parallel Effects Loop: An onboard parallel FX loop lets you blend digital or analog effects into your signal without sacrificing the amp's pure, dry tube tone. 
  • Shock Mounting: Both the chassis and critical V1 preamp tube are mounted on rubber isolators to minimize adverse vibrations and microphonics at high volumes. 

Because Groove Tubes ceased amplifier production in the early 2000s to focus entirely on tubes, the Soul-O 75 is considered a rare boutique find. 

Unique rack-style layout and a raw sonic demonstration running clean with no external effects. Cash, cashier’s check, Venmo or Zelle.

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Listed2 days ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
Model
  • Soul-O 75 Amp
Finish
  • Black naugahyde
Categories
Year
  • 1990s
Made In
  • United States

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Alan H

Santa Cruz, CA, United States
Joined Reverb:2026

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