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Boss GT-3 Guitar Effects Processor

Boss GT-3 Guitar Effects Processor

$113.44 Price Tier: Budget

4.5 (16)

2 Reviews

This product is Vintage or Discontinued

Find out who is using Boss GT-3

3 wishlisted

40 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 4, 2026.

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Reviews

Price

4.0 (12)

$113.44 3 available Used

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Average Price: $113

Budget/Beginner

$150

$601+

Price Tier

In the Multi Effects Pedals category, Boss GT-3 Guitar Effects Processor is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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High-end

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Description

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Unleash your creativity on the strings with the Boss GT-3 Guitar Effects Processor. This powerful pedalboard is a discontinued gem, offering a plethora of modeled effects straight from the Boss' COSM engine. Its unique and sought-after sound capabilities might be the secret ingredient your performance or recording session has been missing. Add this to your rig and take your musical journey to new, uncharted territories.

Key Features:

Multi-effects pedal offering a wide range of sound possibilities.
Powered by Boss' COSM engine for high-quality modeled effects.
Predecessor to the GT-6 model.
Provides 32 modeled effects for diverse sonic options.
Discontinued model, offering a unique sound profile.

Product specs

Brand	Boss
Model	GT-3 Multi-Effect Unit
Finish	Black
Year	2010s
Categories	Multi-Effects Pedals and Processors

FAQs

What are the standout features of the Boss GT-3 Guitar Effects Processor?: The Boss GT-3 offers a wide range of effects, including overdrive, modulation, and delay, powered by Boss's COSM technology. It features a user-friendly interface with multiple footswitches for real-time control and an expression pedal for dynamic sound manipulation.
Is the Boss GT-3 suitable for live performances?: Yes, the Boss GT-3 is designed for live use, offering robust build quality and a variety of footswitches for easy access to effects during performances. Its programmable patches allow for quick switching between custom sound settings.
Can the Boss GT-3 Guitar Effects Processor be integrated with other pedals?: The Boss GT-3 can be integrated into a larger pedalboard setup. It features input and output jacks that allow it to be connected with other effects pedals, providing flexibility in shaping your guitar tone.
Does the Boss GT-3 support MIDI connectivity?: Yes, the Boss GT-3 includes MIDI in and out ports, allowing it to be controlled by external MIDI devices or to control other MIDI-compatible gear, enhancing its versatility in both studio and live settings.
What power supply does the Boss GT-3 require?: The Boss GT-3 operates with a standard AC power adapter, specifically the PSA series adapter from Boss, ensuring it has the necessary power for all its effects and functions.

Videos

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CM Studio

BOSS GT-3 Part 1

CM Studio

Boss GT-3 Promo (Roland 1999)

Perfect Circuit

Boss GT-3 - TUTORIAL + STUDIO PRESETS Part 1 of 5 - NO TALKING

Charlie Siete

Boss GT-3 | Demo Clean , Drive Sound [ Preamp ]

Azizie Mislan

Boss GT-3 Guitar Multieffects Demo

Guitar Gear Spot

Boss GT-3 Guitar Effects Sound Demo

Guitar Gear Spot

Boss GT-3 Guitar Multi-Effects (Pedal Test) (11-15-22)

The Rolling Store

Boss GT-3 Guitar Multieffects Sound Demo

Guitar Gear Spot

Reviews

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PROS

Versatile with manual and non-manual modes
Analog distortions praised for sounding great
Durable, entirely made of metal
Equipped with external effects loop for flexibility
Stellar modulation, delay, pitch, time, and reverb effects
User-friendly interface after initial learning
Can simulate multiple pedals, offering cost efficiency
Offers MIDI control and multiple footswitches
Fun additional effects like auto riff and slicer

CONS

Power switch issues reported, requiring unconventional methods to operate
Internal overdrives, distortions, and amp sims considered lifeless by some
Expression pedal quality not the best
Preamps and distortions may need bypassing for optimal sound

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Boss GT-3 Guitar Effects Processor.

Features and functionality

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The expression pedal is versatile, capable of controlling any parameter, enhancing customization during performances.
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The GT-3 allows integration of external distortion pedals into its programmable chain, offering customization beyond its built-in effects.
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The GT-3 is noted for its analog overdrive, which offers a unique sound quality that modern digital models can't replicate.
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The "CTL" button can be used effectively as a 2 or 3 dB boost for switching between rhythm and solo parts.
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It's noted that the delays were a high point of the GT-3, setting a standard at the time of its release.
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The harmonizer effect in the GT-3 is described as unique and difficult to replicate with contemporary gear.
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Use cases and applications

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The built-in DS-1 is noted, but some users prefer retaining external pedals like the Big Muff for specific distortion needs.
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To optimize the GT-3, users recommend a momentary switch for programming time delays or other effects.
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While not ideal for direct live use due to its era of design, the GT-3 is effective for home practice and learning.
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Known for producing excellent metal tones, as evidenced by its use by the band Katatonia in the late '90s and early 2000s.
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Value and pricing

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One owner purchased a GT-3 for $80, suggesting it's possible to acquire this model at a budget-friendly price.
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Comparisons

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The GT-3 is described as having tones similar to the GT-6, which some users prefer over the tones of the GT-10.
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The GT-3 is considered superior to later models in terms of drive quality due to its analog circuits.
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User experience

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The GT-3 can be overwhelming initially but is excellent for learning how individual effects, combinations, and routing work.
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Users recommend experimenting with effect order, often starting with a clean/base sound as the first patch in any bank.
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