PedalBro

Overdrive · Roshi

Roshi Seji

The Roshi Seji is an analog overdrive pedal featuring a dual-stage design with independent controls for core and edge treble frequencies. It uses a discontinued vintage op-amp to shape its tone.

  • 9V DC · center −
  • 7 mA
  • True bypass
  • Analog
  • Mono
New
from $256.27
Used (asking)
from $280.15

The rundown

Highlights

  • Dual-stage overdrive circuitry
  • Independent core and edge treble controls
  • Vintage discontinued op-amp
  • True bypass switching
  • Low power consumption at 7 mA

Best for

Players seeking a straightforward analog overdrive with tone-shaping flexibility through dual-stage processing.

Quick facts

Power
9V DC
Current draw
7 mA
Polarity
Center negative
Bypass
True bypass
Dimensions
81.5 × 131.1 mm
Weight
460 g
Stereo
No
MIDI
No
Expression input
No
Status
In production

Where to buy Roshi Seji

$256.27 lowest new price · Reverb

Used listings asking $280.15–$280.15, median $280.15 (1 listing, small sample). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbNew$256.27View
ReverbUsed$280.15View
ReverbNew$329.49View

Prices last checked 22 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the Roshi Seji use?

The Roshi Seji runs on a 9V DC supply, center-negative, with low power consumption of 7 mA and is battery-compatible.

Does the Roshi Seji have true bypass?

Yes, the Roshi Seji features true-bypass switching.

What are the dimensions of the Roshi Seji?

The Roshi Seji measures 81.5 x 131.1 mm and weighs 460 grams.

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.