The HPDI is a version of Hamptone’s FET-based microphone preamps adapted for a DI-level signal. It is designed to run on either phantom power or a DC wallwart. A finished DI fits in a stomp-box-sized chassis.

Notable Features:

• Runs on phantom power of DC wall wart (included in kit)
• Inputs and Outputs:
  • 1/4″ input
  • 1/4″ parallel output
  • 1/4″ buffered output
  • XLR transformer-balanced output
• Pad, phase and ground lift controls
• Based on the HJFP2 mic preamp
• Kit includes mechanical templates for housing the project in a Hammond 1590B case

Price: No longer offered as a kit

More info:

• www.hamptone.com/hpdi.html