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Boss releases the heir to the Roland VG-8 and VG-99 V-Guitar Processor / Instrument Modeller series - with its super smart VG-800 Edition

BossGuitar Synth and SequencerModulation
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2025-GPX-Boss-VG-800-V-Guitar-Processor-70r.jpg

I believe the the ’V’ in V-Guitar stands for for ’Virtual’ (i.e. ’Virtual Guitar Modelling’)- where the VG-800 empowers you to model near enough every significant format / variety of Guitar or Bass.

 

I was initially a little confused as to where this sat in Boss’s ’Synthesizer’ range - and what its relationship was to the flagship SY-1000 and GM-800 devices. Where my lane within all of this is more the SY-1 and SY-200 editions. I like the idea of the SY-1000 - but don’t really have the real estate to properly accommodate that model within my setup!

 

My good friend and Boss’s very own Matt Knight put me firmly in the picture with the following overview, and I will probably do a more expansive article at a later date - featuring all of Boss’s ’Synth Pedals’ - and probably the Roland GR-55 too which is directly related to and derived originally from Roland’s original GR Series.

 


 

BOSS SY SERIES

 

The SY-1 and SY-200 are polyphonic synth pedals designed for guitar players who want to add synth sounds without extra gear or complex setups. They work with a standard guitar cable — where no special wiring is needed.

 

A flagship pedalboard synthesizer that combines multiple synth technologies with GT-1000 effects. It lets you mix guitar and synth sounds, and includes 3 types of guitar synth modelling, 12 guitars, 9 acoustics, 3 basses, and amps/effects. Huge amount of routing and assign options with its own inbuilt sequencer. Allows you to do stuff like this :

 

It connects to a GK-3 pickup via the 13-pin cable (analogue pickup system.) The SY-1000 is Best for : Deep-dive synth players and experimental musicians. Think of this like a multi-effect, but it’s an all-in-one solution for serious synth exploration.

 


 

BOSS GM SERIES

 

I fairly recently covered the GM-800 - which now features a more convenient 1/4" Serial GK Cable system and has 2 different adapters to help you get the most out of the GR-300 platform. 

 

The GM-800 is a Synth module controlled via guitar, using the new Serial GK system (Digital using TRS cable instead of the 13-pin cable). Powered by the ZenCORE synth engine, this unit is perfect for producers and musicians who want to create sounds with a guitar but then transfer them to other instruments (e.g., keyboards). It’s a future-forward synth that can be updated with new sounds via the Roland Cloud. Its sounds / sound packs are unique to the GM-800 only and does not sound like any other Roland / BOSS Guitar Synth. It has four Synth ’Tones’ and one Drum ’Tone’ with which you can do some really nuts stuff. As a reference we have Hans from the Boss Team’s GM-800

 

The GM-800 is Best for :  Producers, songwriters, and music directors who need a versatile, GK or MIDI-controllable synth module. For example, a keyboard player could have this in their setup and play it via a keyboard (no guitar required).

 


 

BOSS VG SERIES

 

The VG-800 is a cutting-edge V-Guitar processor, designed for guitarists who want to model different guitars and basses with incredible accuracy. It includes dual guitar functionality, alt-tuning, string bending, and now uses the GK-5 serial pickup system, making it more accessible for new players. The VG-800 also features a standard guitar input, allowing you to process one signal with onboard amps while modelling a completely different guitar via the GK pickup. Check the web text for some core examples. Of course VG-800 is more ’pedalboard-friendly’ and designed to perhaps become part of a pedalboard where something like a SY-1000 would be a bit too cumbersome.

 

The V-800 is Best for : Guitarists seeking to model multiple instruments and experiment with new guitar sounds, both for live performance and home recording. The VG-800 also pairs beautifully with the GM-800 for even more creative possibilities visa the serial cable.


The Boss VG-800 V-Guitar Processor

2025-GPX-Boss-VG-800-V-Guitar-Processor-70r.jpg

Controls - Output Level, Instrument, Effects, Menu, <, Exit, >, < Exit together = Lock, Exit > together = Write, Param Controls 1-5, Selec, Bank Down Footswitch, Bank Up Footswitch, (Both Bank Footswitches = Tuner), CTL 1 Footswitch, Up + CTL 1 = FX Bypass.

 

Rear & Side Ports - GK In, GK Out, Guitar Inupt, Send (Stereo), Return (Stereo), R/Mono Output, L/Phones Output, CTL 2, 3 / EXP 1, DC IN, Ground, USB C, MIDI Out, MIDI In, CTL 4, 5 / EXP 2.

 

Reimagine the Limits of Guitar

 

The VG-800 V-Guitar Processor is a groundbreaking leap in guitar- and bass-playing technology. Explore a huge palette of guitar modeling tones and craft tunings from a universe of sound. Paired with instruments equipped with the advanced Serial GK interface GK-5/B Divided Pickup, this cutting-edge processor reveals a new dimension in performance.

  • Next-generation V-Guitar processor featuring the advanced Serial GK interface
  • Create unique guitar and bass sounds with a vast array of instrument, pickup position, and string settings
  • Newly developed Dual Guitar/Bass function merges two distinct guitar or bass elements into a single instrument, each with its own customizable signal path
  • Instantly switch to custom or alternate tunings, including Drop, Open, 12-string, and more
  • Dedicated guitar and bass modes
  • String Bend feature allows pitch change of specific strings via CTL switch
  • Classic Roland GR-300 Guitar Synthesizer and VIO Guitar sounds
  • Massive library of flagship-class preamps and effects
  • GK-Out for linking with GM-800 Guitar Synthesizer
  • Stereo Send/Return jacks for external pedals
  • USB audio/MIDI connectivity and TRS-MIDI I/O
  • Guitar to MIDI function for playing external MIDI instruments via a USB or MIDI cable
  • Two external control jacks, each with support for up to two footswitches or an expression pedal
  • Edit Memories and organize sounds on your computer with BOSS Tone Studio
  • Download and share VG-800 Livesets via BOSS Tone Exchange

The VG-800 should be available imminently at most leading International Boss Dealers - where it will go for $649 / €699 / £605.

 

Recommended Accessories

  • Divided Pickup : GK-5 (for guitar) / GK-5B (for bass)
  • Serial GK Cable : BGK-3 (3 ft./1 m) / BGK-15 (15 ft./4.5 m) / BGK-30 (30 ft./9 m)
  • GK Converter : GKC-DA / GKC-AD
  • Foot Switch : FS-5U / FS-5L / FS-6 / FS-7
  • Expression Pedal : EV-30 / FV-500L / FV-500H / Roland EV-5
  • Instrument Cables : BIC-Series
  • TRS/MIDI Cables : BMIDI-5-35 / BMIDI-1-35 / BMIDI-2-35 / BCC-1-3535 / BCC-2-3535

Technical Specs

  • Sampling Frequency : 48 kHz
  • Processing : 32-bit floating point
  • Memories - Guitar mode: 150, Bass mode: 150
  • Instruments Types :
    • GUITAR MODE - Electric guitar, Acoustic, Dual guitar, Electric bass, Vio guitar, Synth
    • BASS MODE - Electric bass, AC bass, Dual bass, Electric guitar, Vio bass, Synth
  • Effects : Over 150 types
  • Nominal Input Level - GUITAR INPUT : -10 dBu, RETURN : -10 dBu
  • Maximum Input Level - GUITAR INPUT : +12 dBu,  RETURN : +7 dBu
  • Input Impedance - GUITAR INPUT : 1 M ohm, RETURN : 1 M ohm
  • Nominal Output Level - OUTPUT (L/PHONES, R/MONO) : -10 dBu. SEND : -10 dBu
  • Maximum Output Level - OUTPUT (L/PHONES, R/MONO) : +7 dBu, SEND : +7 dBu
  • Output Impedance - OUTPUT (L/PHONES, R/MONO) : 44 ohms, SEND : 1 k ohm
  • Recommended Load Impedance - OUTPUT (L/PHONES, R/MONO) : 10 k ohms or greater (Phones: 44 ohms or greater), SEND : 10 k ohms or greater
  • Controls - DOWN switch, UP switch, CTL1 switch, INST button, EFFECTS button, MENU button, EXIT button, PAGE buttons, 1--5 knobs, SELECT knob, OUTPUT LEVEL knob
  • Display : Graphic LCD 256 x 80 dots
  • Connectors :
    • GK IN, GK OUT jacks: 1/4-inch TRS phone type (for BGK cable only)
    • GUITAR INPUT, OUTPUT (R/MONO) jacks: 1/4-inch phone type
    • OUTPUT (L/PHONES), SEND, RETURN jacks: 1/4-inch TRS phone type
    • CTL 2, 3/EXP 1, CTL 4, 5/EXP 2 jacks: 1/4-inch TRS phone type
    • USB COMPUTER port: USB Type-C(R)
    • MIDI (IN, OUT) connectors: Stereo miniature phone type
    • DC IN jack
  • Power Supply : AC adaptor
  • Current Draw : 690 mA
  • Power consumption when in OFF mode (when the power automatically turns off) : 0.1 W
  • Dimensions - 173 (W) x 135 (D) x 63 (H) mm / 6-13/16 (W) x 5-3/8 (D) x 2-12 (H) inches (without rubber foot), 173 (W) x 135 (D) x 65 (H) mm / 6-13/16 (W) x 5-3/8 (D) x 2-9/16 (H) inches (including rubber foot)
  • Weight (excluding AC adaptor) - 920 g / 2 lbs 1 oz

Further References

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Stefan Karlsson
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