BOSS ST-2 Power Stack Pedal

BOSS ST-2 Power Stack Pedal – Authentic Stack Amp Distortion with Dynamic Tube-Inspired Response

The BOSS ST-2 Power Stack is a high-performance distortion pedal designed to recreate the sound, feel, and dynamic response of legendary tube-driven stack amplifiers in the renowned BOSS compact pedal format. Powered by advanced COSM amp modeling technology, the ST-2 delivers an impressive range of authentic amplifier tones—from vintage edge-of-breakup crunch and classic rock drive to powerful modern high-gain distortion—all while responding naturally to your playing dynamics and guitar volume adjustments.

Designed for players who want the inspiring character of a cranked stack without excessive stage volume, the ST-2 combines realistic amp behavior with intuitive controls. Its unique SOUND control simultaneously shapes both gain and tonal character, allowing you to dial in a wide variety of stack-inspired voices quickly and easily for live performances, studio sessions, and everyday practice.

Authentic Stack Amplifier Character

The ST-2 captures the rich harmonics, punch, compression, and sustain associated with classic full-stack tube amplifiers. Whether you're seeking vintage British-style crunch, aggressive hard rock rhythm tones, or modern saturated distortion, the pedal delivers convincing amplifier-inspired performance with remarkable clarity and responsiveness.

Unlike conventional distortion pedals that simply increase gain, the ST-2 models the complex interaction of amplifier gain stages, producing a natural playing feel with responsive attack, harmonic richness, and expressive dynamics that closely resemble a real tube amplifier.

Exclusive SOUND Control for Wide-Ranging Amp Tones

At the heart of the BOSS ST-2 is the innovative SOUND control, a unique feature that simultaneously adjusts both distortion characteristics and amplifier voicing. Instead of requiring multiple controls to reshape the tone, this single knob provides smooth transitions across a broad range of stack amplifier sounds.

Lower settings produce warm vintage crunch with excellent note definition.
Mid settings deliver classic rock and hard rock rhythm tones with rich harmonics.
Higher settings provide powerful modern high-gain distortion with enhanced sustain and low-end impact.

This intuitive control allows musicians to quickly find professional-quality amp tones suitable for virtually any rock or metal performance.

Natural Tube-Like Playing Dynamics

One of the defining strengths of the ST-2 is its remarkably responsive playing feel. Just like a genuine tube amplifier, the pedal reacts naturally to picking attack and guitar volume changes, allowing expressive control directly from your instrument.

Play softly for cleaner edge-of-breakup sounds, then dig in with stronger picking for increased saturation and sustain—all without changing pedal settings. This dynamic behavior makes the ST-2 feel remarkably close to playing through a powerful tube stack.

Flexible Tone Shaping with Two-Band EQ

The ST-2 features dedicated Bass and Treble controls for precise tonal adjustment across different guitars, pickups, amplifiers, and musical styles.

Bass: Controls low-frequency response for tighter rhythm tones or fuller low-end impact.
Treble: Shapes brightness, clarity, and upper-frequency presence.
Level: Adjusts the overall output volume.
Sound: Simultaneously controls amplifier character and gain structure.

The straightforward control layout makes it easy to achieve balanced, stage-ready tones while offering enough flexibility for detailed sound customization.

Versatile Distortion for Modern Guitarists

The ST-2 complements a wide range of guitars, pickups, amplifiers, and pedalboard setups. Its broad tonal range makes it suitable for numerous musical styles and performance environments.

Classic rock rhythm guitar.
Hard rock lead playing.
Modern high-gain distortion.
Heavy rhythm guitar.
Lead boosts with rich sustain.
Studio recording and live performance.

Its dynamic amplifier-like response also makes it an excellent choice for players who enjoy controlling gain directly with their guitar's volume knob.

Legendary BOSS Compact Pedal Reliability

Like every BOSS compact pedal, the ST-2 is engineered for dependable performance in demanding professional environments. Its rugged metal enclosure, reliable footswitch, and buffered bypass circuitry ensure consistent operation while maintaining signal integrity throughout complex pedalboard setups.

Whether used for rehearsals, live performances, or studio recording, the ST-2 provides the durability, reliability, and consistent sound quality that have made BOSS pedals trusted by musicians around the world.

Key Features

Authentic stack amplifier distortion powered by advanced COSM amp modeling.
Wide tonal range from vintage crunch to modern high-gain distortion.
Exclusive SOUND control adjusts both gain and amplifier character.
Highly responsive to picking dynamics and guitar volume changes.
Dedicated Bass and Treble EQ controls for flexible tone shaping.
Natural tube amplifier-style compression and harmonic response.
Buffered bypass maintains signal quality.
Suitable for classic rock, hard rock, metal, and modern guitar styles.
Compact and rugged BOSS enclosure built for professional use.
Powered by a 9V battery or optional BOSS PSA-series AC adaptor.

Technical Specifications

Nominal Input Level: -20 dBu
Input Impedance: 1 MΩ
Nominal Output Level: -20 dBu
Output Impedance: 1 kΩ
Recommended Load Impedance: 10 kΩ or greater
Bypass: Buffered bypass
Controls: SOUND, BASS, TREBLE, LEVEL, Pedal Switch
Connectors: INPUT jack, OUTPUT jack, DC IN jack
Current Draw: 36 mA
Power Supply: 9V battery or BOSS PSA-series AC adaptor (sold separately)
Dimensions: 73 mm (W) × 129 mm (D) × 59 mm (H)
Weight: 440 g (including battery)

Ideal Applications

Classic British-style stack amplifier tones.
Vintage rock and hard rock rhythm guitar.
Modern high-gain distortion.
Expressive lead guitar with rich sustain.
Dynamic tube amp-inspired performance.
Professional studio recording.
Live stage performance.
Versatile pedalboards requiring realistic amplifier-style distortion.

Why Choose the BOSS ST-2 Power Stack?

The BOSS ST-2 Power Stack combines advanced COSM amp modeling with the legendary durability of BOSS compact pedals to deliver convincing stack amplifier tones in a portable, pedalboard-friendly format. Its innovative SOUND control, dynamic playing response, and flexible EQ provide everything from vintage crunch to modern high-gain distortion while preserving the feel and expression of a real tube amplifier.

Whether you're building a professional pedalboard, recording in the studio, or performing live, the BOSS ST-2 Power Stack delivers authentic amplifier-inspired distortion, versatile sound shaping, and dependable BOSS reliability for virtually any rock or high-gain guitar application.