My Guitar Notes

Specimen 873

1 SPOT Pro CS12 12-output Isolated Pedalboard Power Supply

truetone__1-spot-pro-cs12-12-output-isolated-pedalboard-power-supply — video still
Video still: Supercool Pedals
MakerTruetone
Typeaccessories · pedalboard power supplies
PriceUSD 197 (2026-09)
Statuscurrent
Catalogue no.873

A 12-output isolated pedalboard power supply whose variable 4-9V rail is aimed at vintage germanium fuzzes.

Watch

YouTube Short Supercool Pedals · 2026-03 — Shows how an isolated supply cleans up pedalboard tone
YouTube Short Home Studio Simplified · 2025-04 — Why non-isolated power supplies cause noise and reliability issues

Supercool Pedals' clip asks whether a power supply is ruining your tone, which is the question isolated outputs are meant to answer, and Home Studio Simplified covers why supplies fail.

Why it matters

Twelve fully isolated outputs cover two 18V rails, four switchable 9V/12V rails, four 9V rails, one 9Vac output and one variable 4-9V output, which is enough for most large boards without a second supply. Isolating each output keeps noise down, and the input is switchable between 115V and 230V. Cables, converter plugs and Pedaltrain mounting brackets are included, and the unit weighs 2.35 lbs.

Note

Truetone's switching-mode flagship brick, whose variable 4-9V output is favoured for vintage germanium fuzzes and whose isolated rails keep noise down on large boards. Sweetwater lists it at 4.8/5 from 184 ratings; Reverb's product record dates the model to the 2010s.

Specifications

  • 12 fully isolated outputs
  • 2 x 18V, 4 x 9V/12V (dip switch), 4 x 9V, 1 x 9Vac, 1 x variable 4-9V
  • 8.12 x 3.37 x 2 in, 2.35 lbs
  • 115/230V switchable input
  • cables, converter plugs and Pedaltrain brackets included

Before you buy

  • measure your board: 8.12 x 3.37 x 2 in, 2.35 lbs
  • the variable 4-9V output is intended for germanium fuzzes, so not every pedal should use it
  • cables, converter plugs and Pedaltrain brackets are in the box

Sources

Related models

More from the archive

See also