Boss GP-10S

Unlimited Sonic Possibilities

Incredible Versatility for Stage and Studio Playing

The compact GP-10 is both an instrument modeling processor and a powerful multi-effects unit. Its multi-effects section features flagship-level COSM® amps and effects, and these can be used with any guitar via a standard 1/4-inch cable.

In addition to instant tuning changes, using a GK-compatible pickup with the GP-10 lets you change your instrument’s entire sound as well. On hand are classic modeled electric guitars with single coils and humbuckers, plus steel- and nylon-string acoustics, basses, banjo, resonator, fretless guitar, and even a sitar! The GP-10 also includes an impressive analog-modeled synth engine that powers an authentic emulation of the famous Roland GR-300 analog guitar synth and a super-fat OSC Synth with two oscillators and many easily adjustable sound parameters. In addition, a selection of cool “Poly FX” deliver unique sounds only possible with GK processing, allowing you to take your playing into exciting new territory. Modeled sounds can be blended with your guitar’s normal sound, putting an infinite range of tones under your fingers.

Natural, Ultra-Responsive COSM Amps

A core factor that defines an electric guitar’s sound is the amplifier type, and the GP-10 is filled with them. 30 different amps are at your disposal, including classic combos, vintage stacks, and modern high-gain amps, along with bass amps for modeled bass tones and a full-range amp for acoustic sounds. Powered by custom BOSS DSP and the latest developments in COSM technology, the amps in the GP-10 deliver organic, responsive tone, with adjustable settings to vary the natural compression and playing feel. All the GP-10’s amps can be used with either normal guitars or those equipped with a GK pickup.

High-Performance Multi-Effects

Inside the GP-10 is a wide selection of flagship effects derived from the GT-100. Most can be used with a normal guitar (without a GK pickup), allowing the GP-10 to do double-duty as an effects processor for any guitar gig. Included are overdrives, distortions, mod effects, delay, reverb, and more, as well as intelligent harmony and other great effects. The onboard expression pedal can be used for foot volume or effects such as wah, Pedal Bend, and others.
USB Audio/MIDI Interface Built In

The GP-10 features an onboard USB audio/MIDI interface, making it easy to record great amp and effect tones in your favorite DAW with any axe. But when you use a GK-equipped guitar, the GP-10 becomes an enormously powerful creative tool that expands your production capabilities beyond any standard guitar processor. For example, you can record the audio output of each of your guitar’s strings on separate tracks, either processed with the GP-10 or captured dry for later processing. When you record unprocessed sounds in this way, you have the ability to not only re-amp the tracks through the GP-10’s amps, but to “re-guitar” as well, using the GP-10’s instrument modeling to change the sound to anything you want after the fact! The guitar-to-MIDI function allows you to stretch your creativity even further, using your guitar to play soft synths, capture MIDI sequences, and input MIDI data into notation software on your computer.


Available as a free download, the BOSS TONE STUDIO software makes it simple to edit and organize your GP-10 patches on your Mac or Windows computer. In addition, the software provides direct access via USB to the BOSS TONE CENTRAL website, which offers a continually growing collection of free, ready-to-play GP-10 patches created by some of the world’s top guitarists.

GK Pickup Options for the GP-10

Depending on your needs, the GP-10 is available by itself (GP-10S), or with a Roland GK-3 Divided Pickup and 13-pin cable included in the box (GP-10GK). If you already have a GK-3 on your guitar—or if you have an instrument such as the GC-1 GK-Ready Stratocaster® with a GK pickup built in—you’ll want to choose the GP-10S. If you want to use the GP-10’s modeling functions and you don’t have a GK-3, the GP-10GK is the way to go. The GK-3 is quick and easy to install on your favorite electric guitar with no modification needed.