Mystic Valley StudioAnalog recording · Medford, Mass.

Bass Box DI

A Mystic Valley Audio product: a hand-made replica of Bruce Swedien’s DI box.

Section
08.1
Filed under
Mario Mics
Location
Medford, Mass.
The Bass Box DI: a grey metal box with a chrome handle, gold jacks and a Mystic Valley Audio nameplate reading “Bass Box,” serial 004, Medford, Massachusetts.

01

Overview

The Bass Box replicates the DI box that Bruce Swedien said he used on virtually every bass track since the late 1950s, including records by Michael Jackson, the Brothers Johnson and George Benson.

It reduces bass “clank” and string noise, with a buttery-smooth tone and deep low end. It’s great on synth, too. Sound samples comparing it directly with an industry-standard Jensen DI are available on request.

02

Construction

Hand-made, using Lundahl’s clone of the UTC LS-10X transformer, with gold Pure Tone input jacks, a gold Neutrik XLR output, and silver wire and silver solder, in a classic Bud Industries “Bud-Box” enclosure.

03

Availability

Sold out. Another batch is expected in winter 2027. To ask about the next batch, email alex@mysticvalleystudio.com.