BOSS GP-10 top front side angle
BOSS GP-10 rear view
BOSS GP-10 with optional GK-3 Pickup (guitar not included)
Optional Roland GK-3 Divided Pickup
BOSS GP-10 top front view


Guitar Processor

Product Highlights

  • Guitar Processor
  • Available with or without a GK-3 Divided Pickup
  • Immediate access to down tunings, open tunings, 12-string sounds, & your own custom tunings
  • Instrument modeling via COSM technology
  • Analog guitar synthesizer modeling driven by real time DSP
  • Play expressive, highly-responsive synth tones
  • Create entirely new sounds by combining modeled & normal guitar tones
  • Premium COSM amps & multi-effects derived from the GT-100

Sale Price $349.00

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BOSS GP-10 Guitar Processor

Introducing unlimited sonic possibilities. The new GP-10 puts a world of amazing tones and tunings at your fingertips, all in a compact processor that’s affordable and user-friendly. With an optional Roland GK-compatible pickup on your guitar, the GP-10 lets you turn your sound into various classic electric and acoustic guitar types, basses, and even analog modeled synths, like the legendary Roland GR-300. In addition to this, you have access to immediate altered tunings, including popular open tunings, 12 string tones, and “down” tunings perfect for today’s ultra heavy rock styles. The versatile GP-10 also serves as a full featured multi effects processor for both GK and normal pickups, providing you with a vast selection of COSM amps and effects for live playing and studio recording. Its premium COSM amps & multi-effects are derived from BOSS' flagship GT-100 COSM Amp Effects Processor. In addition, USB connectivity allows you capture GP-10 tones straight into your DAW, and you can even play computer based soft synths from your guitar with the GP-10’s guitar to MIDI convertor!



BOSS GP-10 Key Features:

  • Guitar Processor
  • Available with or without a GK-3 Divided Pickup
  • Immediate access to down tunings, open tunings, 12-string sounds, & your own custom tunings
  • Instrument modeling powered by COSM technology, including conventional electric, acoustic, & bass guitars, plus sitar, banjo, fretless guitar, and more
  • Analog guitar synthesizer modeling driven by real time DSP enables you to play expressive, ultra responsive synth tones
  • Create entirely new sounds by fusing modeled & normal guitar tones together
  • Premium COSM amps & multi effects hailed from the GT-100
  • 13-pin input for guitars equipped w/ a Roland GK-3 Divided Pickup or other GK compatible pickup
  • Standard 1/4" guitar input enables use of amps & effects w/ any guitar
  • USB audio/MIDI interface for multi channel audio recording (including individual string output) & guitar to MIDI conversion w/ GK pickup
  • BOSS TONE STUDIO editor/librarian for Mac/Windows and custom patches available at
  • Play the GP-10 & another 13-pin GK device simultaneously using the GKP-2 Parallel Cable (optional)

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. Plugging into the GP-10’s GK input with a Roland GK-compatible pickup and a 13-pin cable unlocks the instrument modeling section, opening up a world of amazing sonic possibilities for both live playing and studio recording.

Instantly Change Your Guitar’s Tuning

With a GK-compatible pickup, the GP-10 allows you to change your guitar’s tuning with the press of a pedal. There’s no need to change instruments or manually re-tune for different songs or styles—just dial up the tuning you need in the GP-10 and go. Play slide in open tunings like G and E, enjoy shimmering 12-string tones, or drop your entire guitar down in semitone steps for massive, ultra-heavy riffs. There are many tuning presets to choose from, and you can also create your own customized tunings for any application.

A World-Class Collection of Classic Guitars, Synths, and More

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.

BOSS GP-10 Guitar Processor


  • Electric guitar: 12 types
  • Acoustic: 9 types
  • Bass: 3 types
  • Guitar synthesizer: 3 types
  • Poly FX: 5 types

Alternate Tuning:

  • OPEN: D, E, G, A
  • DROP: D to A
  • SHIFT: -12 to +12
  • USER
  • 12-string guitar function


  • Preamp: 30 types
  • FX: 16 types (including OD/DS)
  • OD/DS: 21 types
  • Wah: 6 types
  • Chorus: 3 types
  • Delay: 10 types
  • Reverb: 7 types
  • EQ: 1 type
  • Noise Suppressor(NS): 1 type

Patch Memory:

  • 99

AD Conversion:

  • GK Pickup: 24 bits
  • GUITAR IN: 24 bits + AF method

DA Conversion:

  • 24 bits

Sampling Frequency:

  • 44.1 kHz

Nominal Input Level:

  • GUITAR INPUT: -10 dBu
  • AUX IN: -20 dBu

Input Impedance:

  • GUITAR INPUT: 1 M ohm
  • AUX IN: 27 k ohms

Nominal Output Level:

  • OUTPUT L/MONO, R: -10 dBu
  • GUITAR OUT: -10 dBu
  • PHONES: -10 dBu

Output Impedance:

  • OUTPUT L/MONO, R: 2 k ohms
  • GUITAR OUT: 2 k ohms
  • PHONES: 44 ohms

Recommended Load Impedance:

  • OUTPUT L/MONO, R: 20 k ohms or greater
  • GUITAR OUT: 20 k ohms or greater
  • PHONES: 16 ohms or greater


  • Pedal switch x 4
  • Expression pedal x 1


  • 16 characters, 2 lines (backlit LCD)


  • GK IN connector: 13-pin DIN type
  • GUITAR IN jack: 1/4-inch phone type
  • GUITAR OUT jack: 1/4-inch phone type
  • OUTPUT (L/MONO, R) jacks: 1/4-inch phone type
  • PHONES jack: Stereo miniature phone type
  • AUX IN jack: Stereo miniature phone type
  • EXP 2/CTL 3, 4: 1/4-inch TRS phone type
  • USB port: USB type B
  • DC IN jack

Power Supply:

  • AC adaptor

Current Draw:

  • 350 mA


  • AC adaptor
  • Owner's manual
  • Divided pickup (Roland GK-3) (only for GK included model)
  • GK cable (3 m, 10 feet) (only for GK included model)

Options (sold separately):

  • Divided pickup: Roland GK-3
  • GK cable: Roland GKC-5 (5 m), GKC-10 (10 m)
  • GK parallel cable (GK pickup <--> GK connector x 2): Roland GKP-2
  • Unit selector: Roland US-20
  • Footswitch: FS-5U
  • Dual footswitch: FS-6, FS-7
  • Expression pedal: Roland EV-5, FV-500L/500H



  • 251 mm
  • 9-15/16 inches


  • 207 mm
  • 8-3/16 inches


  • 71 mm
  • 2-13/16 inches


  • 1.9 kg
  • 4 lbs. 4 oz.

SIZE AND WEIGHT (Maximum height)


  • 251 mm
  • 9-15/16 inches


  • 207 mm
  • 8-3/16 inches


  • 93 mm
  • 3-11/16 inches


  • 1.9 kg
  • 4 lbs. 4 oz.

Call 1-877-477-6432 for any technical questions or if you need SPECIAL PRICING regarding this product