The 63 OD tube-powered guitar preamp from Koch, with classic vintage overdrive, OD Boost, and maximum functionality!

The 63'OD guitar preamp is as much at home in your rehearsal room as it is in the studio or on-stage. Whether used as a stand-alone preamp, or in conjunction with your
pedalboard, your guitar signal can be routed to any amplification device, recording or mixing console as well as to any monitor system you are using. The 63'OD has two independent channels (Clean & Overdrive) which share a 3 band EQ, plus a Boost switch for higher gain. The Clean channel is focused on clarity and full frequency response to
accurately reproduce your guitar's tone. The Overdrive channel fills in your clean tone with the thick tube-driven mids and saturation that made legends out of guitar slingers in the 60's and 70's. The Boost switch takes those great blues/rock tones to the next level for solos or just a heavier drive!

The Koch 63'OD also features both pre and post FX loops for adding tone shaping pedals before the pre-amp, and modulating pedals after the pre-amp. There is a 9VDC output that can power those additional pedals up to 200 mA, and is fully protected against short-circuit. The remote control input can be used with midi switchers or other external switching devices. Finally, there is a balanced XLR DI output with line level signal, speaker emulation and ground-lift for connection to recording or mixing consoles, and a 1/4" output with switch-able levels for connection to any type of amp or monitor. Both outputs can be used simultaneously.

The Koch 63'OD is the perfect tube powered preamp for rehearsal, recording, touring and fly-ins where you need to take 'your sound' with you. We use only the highest grade components for the best sound and reliability, plus we have housed the 63'OD in a heavy duty, yet light weight aluminum housing.


Koch Pedal Preamp
1- 12AX7 Preamp tube
Tube operating Voltage 285VDC
Clean Channel with Volume control
Overdrive Channel with Gain and Volume controls
Silent (clickless) switches for Clean/Overdrive and OD Boost (with LED on/off Indicators)
Shared 3-Band EQ section
Non-buffered Pre-FX Loop
Fully buffered Post-FX Loop
Monitor Output with (OdbV) for Power Amp, (-10 dbV) to FX return and (re-amp) to Clean Channel input
Balanced XLR DI REC/PA Output with speaker emulation
Remote Control Input (for midi switcher or external switching)
12VAC power supply input (adaptor is included)
9VDC/200mA power supply output
Dimensions: 13.2 cm w x 20.5 cm d x 6.4 cm h
Weight 1.2 kg
Thanks for visiting Midlothian Music. Call us (708) 403-3733 with any questions. Proudly serving your music needs for over 55 years as a family owned business. Open 7 days weekly and shipping daily. We stock a large selection of Name Brand Amps and are uploading new items regularly..

Year Condition Case
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Midlothian Music
John S. Lekavich
(708) 403-3733
Orland Park, IL
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