
Anthony Easton
The Mystery Brain BS-301 by Nocturne is a versatile pedal that combines a vintage Japanese preamp and a digital tape echo simulator. It replicates the 70’s Japanese RE-301 Space Echo preamp and features a boost mode (ABBY) and a digital tape echo simulator using analog photocell modulation for chorus or vibrato. The pedal offers 100% analog vintage tone, texture, and dynamic replication.
Key Features:
- Vintage Japanese Preamp & Digi Tape Echo: The pedal replicates the sounds
and response of the famous Japanese 301 space echo, offering rates from about
15ms to 600ms tape delay times.
- Analog Photocell Modulation: The pedal includes a defeatable analog
modulation circuit that affects the wet signal of the echo repeats, allowing
subtle shimmer, dimensional chorus, and fast trem pulse.
- Boost Mode: The ABBY mode on the Atomic Brain section provides an almost
light overdrive boost when the Tape echo emulator is engaged.
- Additional Controls: The pedal features a DB cut/clean switch for less
saturated attack, a bass cut, and a presence cut switch for a wide variety of
guitars and pedal board signal options.
Technical Specifications:
- Dimensions: 5 5/8" x 4 5/8" x 1 9/16"
- Power Supply: 9V DC, 85mA max (power supply not included)
The Mystery Brain BS-301 is designed to provide a wide range of vintage tones, from roots rock to rockabilly, and is suitable for guitarists looking for a versatile pedal with vintage-inspired sounds and dynamic control. The pedal is built with top audio-grade components, low tolerance resistors, and metal film tone caps to ensure a vintage feel, touch dynamics, and response.
Watch the latest video demos and reviews for the Mystery Brain from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.

Below are live Reverb listings for the Nocturne Mystery Brain from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.

Excellent
$340

Excellent
$548

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Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton