The perfect live & studio companion for pulling out a great tone from your Hi-Z instrument.

Fatboy Tube DI
Fatboy Tube DI

Fatboy Tube DI
Fatboy Tube DI

Fatboy Tube DI
Fatboy Tube DI

Fatboy Tube DI
Fatboy Tube DI

Since it's release in 2014, the Fatboy Tube DI quickly became a DI device of choice among many top Nashville session musicians. Teegarden Audio founder, Bret Teegarden, spent years as a touring and recording bassist before moving to Nashville in 1988 to pursue a recording engineer/producer career. After a 35+ year stint as an independent engineer/producer, the Fatboy Tube DI was a natural extension of his desire to make audio recording gear available that he would choose to use himself. 

We are delighted the Fatboy Tube DI was so well received and today can be heard on numerous hit recordings and national tours. 

Teegarden Audio has a commitment to producing top quality reliable audio gear, hand made in Nashville, TN, using the highest level of components that are put through extensive listening tests. 

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  • Vacuum Tube (Valve) based Direct Injection Box (DI)

  • Discrete electronics

  • Compact & Rugged

  • Hand Built in the USA

  • Transformer Balanced LoZ XLR Outputs (Line Level and Mic Level)

  • Pin 1 Ground Lifts

  • Will drive line level direct to converters and DAWs, no mic preamp needed



  • Frequency Response 7Hz – 30kHz +/- 1 dB

  • Input impedance:  1M ohms

  • Gain range: 27-28dB

  • Maximum Output Before Clipping +18 dBu

  • Noise (EIN): less than -113dB

  • Distortion:  Less than 0.15% 1KHz 1V

  • Power Requirements: 100/120/VAC – 18W (24VAC)

  • Dimensions (W x H x D) 5.4” x 2.6” x 8” • Weight 5 lb. (2.27 kg.)