PedalBro

Uncategorized · Boss

Boss SY-300 Guitar Synthesizer

  • 9V DC · center −
  • 400 mA
  • Buffered bypass
  • Digital
New
from $662.79
Used (asking)
from $345

Quick facts

Power
9V DC
Current draw
400 mA
Polarity
Center negative
Bypass
Buffered bypass
Dimensions
254.8 × 182.1 mm
Status
In production

Where to buy Boss SY-300 Guitar Synthesizer

$662.79 lowest new price · Reverb

Used listings asking $345–$759.95, median $400 (5 listings). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbUsed$345View
ReverbUsed$375View
ReverbUsed$400View
ReverbNew$662.79View
ReverbNew$727.60View
ReverbUsed$759.95View
ReverbNew$847.83View
ReverbB-stock$879.99View
ReverbUsed$899.99View
ReverbNew$989.99View

Prices last checked 23 hours ago. Links to sellers are affiliate links.

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

Page last updated September 29, 2026.