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BOSS ST-2 Power Stack Best Guitar Effects Pedal 2-band EQ with Dedicated Bass and Treble Knob, Vintage Crunch to Ultra High-gain Modern Distortion


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From fat crunch to ultra high-gain distortion, the ST-2 Power Stack delivers famous BOSS distortion with a stunning amount of power that's akin to coveted tube amps and professional amp stacks. The SOUND knob simultaneously blends gain amount and sound character, so you can quickly dial up anything from vintage crunch and punchy drive to full-assault distortion. To add further detail to your tone, simply tweak the onboard two-band EQ to taste. The ST-2 is one very unique distortion pedal, calling on BOSS' years of amp modeling research to bring you real stack sounds in a compact stompbox.

- Original distortion sound reminiscent of tube-based stack amplifiers
- Provides a wide range of tones, from vintage crunch to ultra high-gain modern distortion
- Faithful and accurate response to picking nuances and volume changes
- SOUND knob controls both gain level and sound character
- Two-band EQ with dedicated BASS and TREBLE knobs
- Road-tough BOSS construction

Tower of Power
The ST-2 delivers the playing feel and power that are hallmarks of stack amps. It was derived from BOSS's extensive analysis of the sound and characteristics of a vast number of classic guitar amps. This distortion effect delivers authentic tone and expression that responds naturally to picking nuances and volume changes on your guitar. But emulation is only the beginning, as the ST-2 has the ability to go beyond the sound of real amps.

Crunch, Drive, Ultra High Gain
The ST-2 lets you enjoy a rich, clean tone when playing soft, and smoothly transition into a fat crunch as you play harder - great for rock ballads or songs that require dramatic tone shifts. Imagine the powerful, driving sound of a stack amplifier. An authentic classic-rock tone is here as well, with crisp overtones. Turn up the SOUND knob for a heavy-metal tone. The ST-2 allows extreme high gain, but offers a powerful low-end and sharp edge at the same time.

The SOUND knob is a controller that is uniquely BOSS. Simply set it to the tone type you're looking for. The SOUND knob not only changes gain but sound character as well, from brisk crunch and spectacular drive to earth-shaking ultra high gain.

Road-Tough BOSS
BOSS compact pedals are world-famous for their great sound as well as their road-tough construction, consistency, and reliability. The ST-2 inherits this BOSS-proven design, offering guitarists a solidly constructed pedal that's built to withstand decades of demanding use.



1. Can I use the BOSS ST-2 as a boost?

  • Yes

2. Does the BOSS ST-2 work without power adapters?

  • Yes, the BOSS ST-2 works with 9v batteries.

3. What does the BOSS ST-2 do?

  • The BOSS ST-2 gives you a nice crunch and high gain distortion that is similar to tube amps and amp stacks.

4. Is the BOSS ST-2 noisy?

  • Yes, but you can use the BOSS ST-2 with a noise-reduction pedal.

5. Can I use the BOSS ST-2 as a tube amp?

  • Yes. The BOSS ST-2 can give you a sound like a tube amp.

6. Can I use the BOSS ST-2 for funk rock?

  • Yes.

7. Can I use the BOSS ST-2 to get a lead tone?

  • Yes.

8. Is the BOSS ST-2 true bypass?

  • No, the BOSS ST-2 is a buffered pedal.

9. Does the BOSS ST-2 work with a bass?

  • Yes.

10. Is the BOSS ST-2 digital?

  • Yes.

11. Is the BOSS ST-2 durable?

  • Yes. The BOSS ST-2 is solid and has a robust build.


  • Nominal Input Level: -20 dBu
  • Input Impedance: 1 M ohm
  • Nominal Output Level: -20 dBu
  • Output Impedance: 1 k ohm
  • Recommended Load Impedance: 10 k ohms or greater
  • Bypass: Buffered bypass
  • Controls: SOUND knob, TREBLE knob, BASS knob, LEVEL knob, Pedal switch
  • Indicator: CHECK indicator (Used for indication of check battery)
  • Connectors: INPUT jack: 1/4-inch phone type, OUTPUT jack: 1/4-inch phone type, DC IN jack
  • Power Supply: Alkaline battery (9 V, 6LR61), AC adaptor (PSA series: sold separately)
  • Current Draw: 65 mA
  • Expected battery life under continuous use: Alkaline: Approx. 5.5 hours *These figures will vary depending on the actual conditions of use.
  • Accessories:
  • Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information")
  • Alkaline battery (9 V, 6LR61)
  • Options (sold separately): AC adaptor: PSA series

Size & Weight (Incl. Battery)

  • Width: 73 mm (2-7/8 inches)
  • Depth: 129 mm (5-1/8 inches)
  • Height: 59 mm (2-3/8 inches)
  • Weight (including battery): 410 g 15 oz

* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.

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