Boss GT-1000CORE Guitar Multi-Effects Processor

Boss packed the FX and amp-modeling power of their flagship GT-1000 into a mini package with 3 footswitches, dual FX loops, MIDI, USB audio output, and more.

Amazingly powerful and ultra-versatile, GT-1000CORE delivers the most complete guitar and bass processing experience available in a single stompbox. The full DSP muscle of the flagship GT-1000 lives inside this mini juggernaut, driving class-leading sound quality, advanced AIRD technology, 24 simultaneous effects blocks, and over 140 unique amp/effect types for unlimited creative expression. GT-1000CORE fits into any pedalboard setup and works equally well as a standalone processor for playing live and in the studio. And with flexible I/O and vast control support, it's right at home as the core of any rig.

Supercharge Your Pedalboard

The Boss GT-1000CORE brings next-level creative versatility to any pedalboard, big or small. Toggle between Memory and Manual modes to recall presets or kick effects on/off, and easily integrate with other stomps via mono or stereo I/O. Use the dual send/return jacks for external effects, four-cable method, or separate feeds to a PA or recorder. Access deeper control with external footswitches and expressions pedals, or remotely switch channels on your amp. And with MIDI I/O on space-saving TRS jacks, GT-1000CORE can control -- or be controlled by -- other MIDI devices in your rig.

Mega Stomp

Offering a complete sound processing solution in an ultra-portable package, GT-1000CORE lets you travel light and tackle any professional playing situation with no additional pedals. In a single patch, you have access to 24 simultaneous read more effects, including two amps at once. And with 250 user patches, there's ample room to store sound creations for every type of gig. The impressive DSP engine delivers on-demand power for all available effects, so you'll never worry about running out of processing while building sounds.

The Hub of Your Home Studio

GT-1000CORE is a perfect companion for recording and playing at home. It's a multi-channel USB audio/MIDI interface for flexible DAW production and efficient re-amping. Recording mode allows you to choose from a variety of built-in speaker and microphone types, and it's also possible to import 16 of your favorite WAV-format speaker impulse responses. The onboard looper is a great tool for practice, building sounds, and developing ideas. And with BOSS Tone Studio's intuitive user interface, it's easy to craft sounds on a Mac or Windows computer.

AIRD: A Revolution in Digital Amp Processing

GT-1000CORE harnesses BOSS's breakthrough AIRD technology for a increased level of performance, flexibility, and usability. AIRD is an evolution of the comprehensive Tube Logic concept behind the Katana, Waza, and Blues Cube amplifiers, adapted to provide consistent response across the many different scenarios where an amp processor might be used.

AIRD enables GT-1000CORE to smoothly flow into any creative setup, providing great tone and natural tube amp feel with minimal adjustments. A large selection of AIRD Output Select types let you tailor the sound for any destination, whether it's a guitar amp input, a power amp driving guitar speakers, or a full-range monitoring system -- or all of them at once. AIRD is fully integrated into GT-1000CORE's amps at every level, so you'll always experience their authentic sound and response, no matter what you're plugged into.

Premium Amps and Effects

GT-1000CORE is loaded with expressive guitar amplifiers, all meticulously crafted with AIRD. There are BOSS original amps suitable for all guitar styles, plus famous tube amps from coveted vintage combos to modern high-gain heads. A massive range of effects options are also on board, including BOSS classics, retro stompboxes, MDP effects, and advanced algorithms from the BOSS 500 series. Multiple series and parallel routings are easy to set up with the intuitive interface. And with the clever Stompbox feature, commonly used amp and effects settings can be adjusted across multiple patches at once.

Top-Flight Bass Processor

GT-1000CORE is a bass processing powerhouse, offering exceptional sound processing and versatile DI capabilities in a grab-and-go package. Three AIRD bass preamps are provided for shaping your core tone, and eight different overdrive/distortion effects are available for additional color. There's an MDP bass compressor too, plus chorus, flanger, touch wah, and many other effects specially tuned for bass.


- The complete internal tone processing of the GT-1000 in a compact and portable stompbox
- Unlimited sound creation with 24 simultaneous effects blocks including two different amps and numerous series/parallel routing options
- Unmatched sound quality with 32-bit AD/DA, 32-bit floating-point processing, and 96 kHz sampling rate
- AIRD (Augmented Impulse Response Dynamics) technology delivers natural feel and optimized integration with all types of external devices
- Includes classic BOSS effects, vintage stomps, MDP effects, and algorithms directly ported from the DD-500, MD-500, and RV-500 pedals
- Ultra-fast patch switching and delay carryover
- Innovative Stompbox feature simplifies using common effects settings in many different patches
- Looper for practicing, developing ideas, and enhancing live performances
- High-resolution tuner with mono and polyphonic displays
- Two send/return loops for external effects, four-cable method, or separate direct outputs
- 16 slots for onboard user IRs
- Supports external control via footswitches, expression pedals, USB, and TRS MIDI
- Control out function for switching amp channels
- USB audio/MIDI interface for computer-based recording and editing
- Dedicated mode for bass guitar applications
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- Sampling frequency
96 kHz

- AD/DA conversion
32 bits

- Processing
32-bit floating point

- Memory
250 (User) + 250 (Preset)

- Phrase loop
38 sec. (MONO)
19 sec. (STEREO)

- Tuner internal detection
+/- 0.1 cent

- Normal input level
INPUT L/MONO, R: -10 dBu
RETURN 1, RETURN 2: -10 dBu

- Maximum input level
INPUT L/MONO, R: +12 dBu
RETURN 1, RETURN 2: +12 dBu

- Input impedance
INPUT L/MONO, R: 2 M ohms
RETURN 1, RETURN 2: 1 M ohm

- Normal output level
SEND 1, SEND 2: -10 dBu

- Maximum output level
SEND 1, SEND 2: +12 dBu

- Output impedance
SEND 1, SEND 2: 1 k ohm

- Recommended load impedance
OUTPUT L/PHONES, R/MONO: 10 k ohms or greater (Phones: 44 ohms or greater)
SEND 1, SEND 2: 10 k ohms or greater

- Controls
DOWN switch, UP switch, CTL 1 switch
EFFECT button, MENU button, EXIT button, WRITE button, PAGE button
1-5 knobs, SELECT knob, OUTPUT LEVEL knob

- Display
Graphic LCD 256 x 80 dots

- Indicators
UP indicator, DOWN indicator, CTL 1 indicator

- Connectors
INPUT (L/MONO, R), OUTPUT (R/MONO) jacks: 1/4-inch phone type
OUTPUT (L/PHONES) jack: 1/4-inch TRS phone type
CTL 2, 3/EXP 1、CTL 4, 5/EXP 2 jacks: 1/4-inch TRS phone type
MIDI (IN, OUT) connectors: Stereo miniature phone type
USB COMPUTER port: USB Micro-B type
DC IN jack

- Power supply
AC adaptor

- Current draw
670 mA

- Dimensions
173 (W) x 135 (D) x 63 (H) mm / 6-13/16 (W) x 5-3/8 (D) x 2-12 (H) inches
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
920 g / 2 lbs 1 oz

- Accessories
AC adaptor
Owner's Manual
Rubber foot x 4

- Options (sold separately)
Footswitch: FS-5U
Dual footswitch: : FS-6, FS-7
Expression pedal: FV-500H, FV-500L, EV-30, Roland EV-5
TRS/MIDI cable: BMIDI-5-35

* 0 dBu = 0.775 Vrms
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 3.75 lbs
Shipping Dimensions: 12 x 8 x 5 in
Manufacturer Part Number (MPN): GT-1000CORE
Warehouse Resealed
Shipping Weight: 3.75 lbs
Shipping Dimensions: 12 x 8 x 4 in
Manufacturer Part Number (MPN): GT-1000CORE

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 4 out of 5 stars. (2 ratings)
Submitted July 13, 2021 by Jerry R in Springfield, OR
"Boss GT 1000 Core"
Overall: 4 out of 5 stars
Verified Customer zZounds has verified that this reviewer made a purchase from us.
After purchasing - and being mostly disappointed with - modelers from other brands I was hesitant to spend the considerable sum on the GT 1000 core. But after extensive review of specs and sounds on Youtube and a good deal from zZounds I went for it. I purchased it solely for the presets because my past ventures into programming haven't been good. I haven't gotten through all of them yet but unlike all the other units I've tried that have only a very few actually useful preset patches, the GT-1000 has a considerable number of them, going straight into my studio console, flat EQ, no additional processing or effects. The verdict so far: I don't think I'll ever again have to use a microphone to record most guitar parts. Additionally, Boss has kept the noise levels surprisingly down on the hard overdriven patches, also unlike the other units I've mentioned. The only drawback I've found - and it isn't major - is that there is a dearth of straightforward Fender clean sounds without effects. I'm sure there's a way in the internal programming to deal with that but I haven't found it necessary yet. The effects are pristine - very well done. All-in-all, worth the money.
Musical Background:
50 years musician, producer, engineer
Musical Style:
Classic rock, European female-fronted rock and symphonic metal
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