Radial Engineering Firefly Tube DI from the Personal Studio Equipment Collection of Al Schmitt — Documented Provenance

A Radial Engineering Firefly tube direct box acquired from the official Analogr sale of equipment belonging to legendary recording engineer Al Schmitt.

This unit was not a display or commemorative piece — it shows clear evidence of practical studio use and identification within a professional recording workflow.

The DI, external power supply, and carrying case all retain studio labeling identifying Schmitt, applied during its working life in his studio environment.

Provenance

• Purchased directly from the Analogr estate sale of Al Schmitt’s recording equipment (documentation included)

• Matching studio identification labels on the DI, power supply, and case

• No alterations made since acquisition

Physical Identification Characteristics:

The unit displays multiple indicators of real studio handling:

• Consistent engineer identification labeling across all associated components

• A hand-etched “AL” identification mark on the chassis top plate

• Wear patterns consistent with repeated session use

The marking appears to function as a working identification mark rather than decorative or resale labeling. High-resolution photos are provided so prospective buyers may evaluate these details directly.

Documentary Reference:

Radial Engineering Firefly Tube Direct Box

In a filmed Puremix recording session, Schmitt is shown operating a Radial Firefly direct box and verbally endorses the model as “a great direct, called a firefly, made in Canada.”

**see video linked in photos**

This listing does not assert serial-number verification with the filmed unit, but the visual characteristics and labeling configuration closely correspond.

Condition:

Fully functional and tested. Tube DI circuit operates properly with expected output level and noise performance. Cosmetic wear consistent with professional studio use. All studio labeling and markings preserved.

Includes:

• Firefly tube DI

• Original external power supply (studio labeled)

• Labeled protective case

Significance:

Al Schmitt worked across more than six decades of recording, spanning large-format analog sessions through modern digital production. Equipment directly traceable to his working signal path rarely appears on the open market.

This piece represents a practical tool from his daily engineering process rather than a commemorative collectible — a preserved working artifact from a historically influential recording workflow.

Documentation confirming acquisition from the estate equipment sale will be provided to the buyer.