Musicom Lab SI-01 System Interface - Class-A & Op-Amp Dual Pedalboard Buffer

Preserve Your Pure Tone Across Any Pedalboard Configuration

Long cable runs, complex patch bays, and true-bypass pedal chains quietly strip your guitar signal of its high-end sparkle, low-end punch, and dynamic attack. The Musicom Lab SI-01 System Interface Dual Buffer is a professional rig utility engineered to restore and protect your tone from input to output.

Featuring two distinct, studio-grade buffering circuits in a ultra-compact enclosure, the SI-01 handles both the front of your signal chain and the line drive back to your amplifier. Whether you are running a massive boutique board, routing through an amp's FX loop, or integrating sensitive vintage fuzz pedals, the SI-01 guarantees complete signal integrity and silent operation.

Sanctuary Expert Note

"If your pedalboard sounds lifeless when bypassed or picks up nasty ground hum in multi-amp setups, the SI-01 is the ultimate stealth fix[cite: 7]. Having a switchable Class-A buffer at the front—that you can bypass for fuzzes—paired with an isolated Op-Amp buffer at the end gives you custom-rig signal routing in a single box."

Key Features & Rig Architecture

• Dual-Engine Buffering: Buffer 1 features a Discrete Class-A circuit for rich, high-impedance instrument buffering. Buffer 2 utilizes a ultra-low-noise Op-Amp engineered for high-output line driving.
• Fuzz & Vintage Pedal Friendly: Buffer 1 includes a dedicated front-panel ON/OFF switch. Unpress it to feed impedance-sensitive Fuzz or Wah pedals directly from your passive pickups without treble harshness.
• Isolated Power & Ground Lift: Buffer 2 is supplied with fully isolated internal power and a dedicated Ground Lift switch to instantly purge ground loop hum and hum-inducing multi-amp ground paths.
• Flexible Signal Routing: Ideal for placement at the start and end of your board, splitting signals to a dedicated tuner, or buffering long amp FX loop send/return cables.

Product Specifications Matrix

• Input Impedance (IN 1 / IN 2): 1 MΩ
• Output Impedance (OUT 1 / OUT 2): 100 Ω
• Max Input Level: +8 dBu (Buffer 1) | +18 dBu (Buffer 2)
• Power Requirements: 9VDC Center Negative (45mA current draw)
• Dimensions: 2.9" x 4.5" x 1.2" (72 x 113 x 31 mm)
• Weight: 180 g / 0.4 lbs