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D.W. Fearn VDI Single-Channel Tube Direct Box

Tube DI (Direct Injection) Interface



12-Month Special Financing**

SKU: DWFVDI Categories: , Tags , , , Brand:


Meet the VDI Tube Direct Box

A reimagining of the legendary D.W. Fearn VT-1/F, the VDI is an all-triode Vacuum Tube Direct Box in a single-channel configuration. Unlike the original VT-I/F dual-channel design, the VDI is a single channel offering housed in a robust, low profile steel chassis, ready to slip into a backpack or gig bag.

Designed for both stage and studio work, the VDI is offered as part of the Hazelrigg Industries Solutions Series by D.W. Fearn and will deliver incredible results with amplified acoustic instruments, electric bass, and guitar, synths, or more.

The operation is simple as can be. The front panel includes a 1/4” Instrument Input jack as well as a 1/4” Thru connector to pass the signal on to a guitar or bass amplifier if desired. The mic level output signal is available on an XLR Connector, ready to be patched to a premium Microphone Preamp such as the D.W. Fearn VT-1, VT-2, VT-24, or Hazelrigg Industries VLC. Finally, a Ground Lift option is provided to address Ground Loop issues should they arise.

The more utilitarian rear panel features an IEC Mains Socket, Power Switch, and 115V-220V Mains Selector.

Sharing the same high-headroom circuit design as the venerable VT-I/F, the VDI will provide stunningly dynamic results on electric bass and guitar, add power and girth to vintage (or modern!) synths and bring depth and realism to piezo equipped acoustic instruments outfitted that simply must be heard.


  • Direct Injection Circuit Designed by D.W. Fearn
  • Front Panel Instrument Input on 1/4” Jack
  • Front Panel Pass-through Output on 1/4” Jack
  • Front Panel Microphone Level Output (150-ohm source impedance at a nominal -30dBV) on XLR Connector
  • Ground Loop Switch
  • All Steel Chassis
  • 5 Year Warranty (90 days for vacuum tubes)
  • Hand Crafted in the USA


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No Interest if paid in full within 12 Months**

On qualifying purchases made with your Westlake Pro credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 12 Months. Minimum monthly payments required.

**No interest will be charged on the promo purchase if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo purchase from the purchase date. The required minimum monthly payments may or may not pay off the promo purchase by the end of the promo period. Regular account terms apply to non-promo purchases and, after the promo period ends, to the remaining promo balance. For new accounts: Purchase APR is 29.99%. Minimum interest charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

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