PedalBro

Distortion · Boss

Boss ST-2 Power Stack

The ST-2 Power Stack is a distortion pedal using Boss's COSM technology to model amplifier sounds across a range from clean to high-gain tones. Premier Guitar gave it 4 out of 5 stars, describing it as a distortion box built for heavy sounds.

  • 9V DC · center −
  • 36 mA
New
from $102.64
Used (asking)
from $56.45
Compare pricesSee specs

The rundown

Highlights

  • COSM amp modeling technology for full amplifier character in pedal format
  • Range from clean to high-gain distortion voicings
  • Runs on standard 9V DC power with 36 mA draw
  • Compact stompbox design at 73 x 130.2 mm
  • Buffered bypass and battery compatible

Best for

Players seeking amp modeling distortion tones from a compact stompbox.

Professional reviews

What the press rated it. We link to each review; read the full piece for the details.

Quick facts

Power
9V DC
Current draw
36 mA
Polarity
Center negative
Dimensions
73 × 130.2 mm
Status
In production

Where to buy Boss ST-2 Power Stack

$102.64 lowest new price · Reverb

Used listings asking $56.45–$91.58, median $75 (20 listings). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbUsed$56.45View
ReverbUsed$58.44View
ReverbUsed$64View
ReverbUsed$64View
ReverbUsed$64View
ReverbUsed$64View
ReverbUsed$71.50View
ReverbUsed$71.89View
ReverbUsed$75View
ReverbUsed$75View

Prices last checked 20 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the ST-2 Power Stack need?

The ST-2 Power Stack runs on a 9V DC supply with a center-negative connection and 36 mA current draw.

Can the ST-2 Power Stack run on batteries?

Yes, the ST-2 Power Stack is battery compatible.

What type of bypass does the ST-2 Power Stack have?

The ST-2 Power Stack features buffered bypass.

Similar pedals

Same type, similar features.

Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.