Roland US-20 GK-2A/GK-3 Unit Selector Pedal

Floor Control Pedal for GK-2A- and GK-3-equipped Guitar
Roland US-20 GK-2A/GK-3 Unit Selector Pedal image 1
Roland US-20 GK-2A/GK-3 Unit Selector Pedal image 1
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Roland US-20 GK-2A/GK-3 Unit Selector Pedal
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Get Twice the MIDI!

The Roland US-20 is a floor pedal unit that allows a GK-2A/ GK-3 equipped guitar to control two compatible devices simultaneously. With the US-20 a guitarist could trigger both a GR-20 Guitar Synthesizer and a VG-88/VG-99 V-Guitar System with one guitar. In addition, the US-20 allows users to switch between two attached devices for maximum versatility in a performance situation. Now, players with GR-series guitar synthesizers, a GI-20 Guitar MIDI Interface and a VG-99 V-Guitar System can utilize the power of each device by simply stepping on a pedal.

Roland US-20 Features:
  • One GK-2A/ GK-3 input port
  • Two 13 pin output ports
  • Two pedals for combination switching
  • Durable metal construction
  • Compatible with GR-1/09/50/20/30/33, GI-10/20 and VG-8/88/99
  • Comes with (2) 4 foot cables.

Additional Media

Roland US-20 Owners Manual
More Than One 13-pin Device?

Tech Specs

Type I/O Selector
Inputs 1 x 13-pin
Outputs 2 x 13-pin
Height 1.5"
Width 6.31"
Depth 5.31"
Weight 1.375 lbs.
Manufacturer Part Number US-20

Customer Reviews

Based on 3 reviews
Write your review

Great Pedal!

Ultra quiet. Best A/B I've owned and works great with the GR33 and GP10
Music background: Pro Musician

What's the Beef with the US-20?

Okay, I'll admit I'm "old school". Here's my rig with the US-20: U.S. Ultra Strat with GK-3 pickup added, playing into a Roland GR-33 Synth and the VG-88 v. 2. So, I'm dealing with old equipment, but my outputs are into 3 different amps: (1) a cheapo Rogue practice amp, (2) a Peavey Classic VT 2 x 12, and (3) a Hartke Bass Amp Combo 1155. The Peavey's got 4 standard jacks for instruments, so the Peavey is mixing both the GR-33 and the VG-88. I'm sending the Peavey pre-amp out to the Hartke, while the small Rogue is taking care of one out from the VG and the other out goes to the me a stereo effect when the VG calls for it.I've only had the US-20 for about two weeks, but I'm having no problems with it at all. For those reviews I've read...the same as you probably have before you're willing to pop-out a hunk of change for an A-B pedal...there may be quality-control problems with some of these US-20s in those negative reviews, and mine may start fritzing-out on me, too, but so far, so good. The switching on the 20 is totaling silent and the only thing that seems to be slowing me down is my own ability to work the foot pedals on the synth and the VG fast enough. The electronics are very efficient on the switching pedal, giving me synth alone, VG alone, or both on simultaneously. My favorite is both on ALL THE TIME! I can't get enough of this dual-world option that the Roland US-20 has opened up for me. It's awesome, and I've heard some rigs in my time. The GK-3 allows guitar alone, synth alone, or a mix, and of course you can balance out the volumes with your guitar volume and the GK-3 volume to get your mix. As long as I can have this US-20 do this kind of magic, I'm telling every guitarist I meet how cool this is. I'm 70, now, and I can use the world "cool" with some authority--my age group invented it in the early 50s. You synth guys get yourself one of these switch units: They're super. Now I don't think I can go back to just a guitar with regular stomp pedals..a lot would be missing.
Music background: hobbiest since 1957


Works as describe but requires some forum searching to understand why it does some of the things that users have complained about. I was able to correct all issues by adjusting input gains and understanding how the unit works. 4.5 because the unit reqiures alot of research and developing as to how you implement it.
Music background: Studio Hermit
See also: Footswitches, Roland, Roland Footswitch / Selector Pedals