If you're looking you likely know the deal on the red knob amps. Rumored to be designed by Paul Rivera and built after Fender employees and investors bought the company back from CBS in the mid-1980s.

Here's a very clean, early example. Recent service to have the pots and switches cleaned, overall cleanup, and a test of the footswitch and reverb tank. Everything checked out fine. Comes as you see it with the foot switch and cord. Local test drives welcomed.

Official specs:

The Fender Studio 85 is a vintage solid-state guitar combo amplifier produced in the USA from 1987 to 1993 as part of Fender’s iconic "Red Knob" series.

Key Specifications & Features

Power Output: 65 to 85 watts of solid-state power.

Speaker: 12-inch standard Fender speaker.

Channels: Two switchable channels (Clean and Gain/Overdrive).

Controls:

Clean Channel: Volume, Treble, Mid, Bass, and Reverb.

Gain Channel: Gain, Mid boost, Limiter, Presence, and Volume.

Connections: Dual instrument inputs, effects loop, footswitch input, preamp/power amp connections, and a headphone output.

Weight: Approximately 32 to 35 pounds.

Tone & Performance

Clean Sound: Praised for warm, punchy, and crystal-clear clean tones reminiscent of classic Fender chime.

Pedal Platform: Highly regarded by guitarists as an exceptional pedal platform that handles overdrive, distortion, and fuzz exceptionally well.

Reverb: Features a real, rich analog spring reverb tank.

Genre Suitability: Excellent for blues, rock, funk, and indie styles. Notably used by prominent artists like Radiohead's Jonny Greenwood.