Useful Arts Audio BF-1 Tube Instrument Preamp and DI

BH #USBF1 • MFR #BF-1
Useful Arts Audio BF-1 Tube Instrument Preamp and DI
Key Features
  • Use on Any Instrument with a Pickup
  • Enhances Detail & Dynamics
  • 20 Million-Ohm Input Impedance
  • 15 Hz - 80 kHz Frequency Response
Enhance the clarity, detail, and dynamics of your instrument's sound with the BF-1 Tube Preamp/DI from Useful Arts Audio. Whether used between the instrument and amp, the instrument and a PA or recording device, or all of these at the same time, this all-purpose interface is designed to get the best sound out of a guitar, bass, or any instrument with a pickup while avoiding unintentional alteration of the sound's characteristics. Boasting an input impedance of 20 million Ohms, the BF-1 captures even tiny details in the signal and pumps the results out to an amp or console in useable form. The BF-1 can simultaneously drive an amp through its 1/4" output jack and a pro audio device via XLR.
Special Order
Expected availability: 7-14 business days
$799.00

Important Notice

  • This item is noncancelable and nonreturnable.
Daniel A., B&H Pro Audio Expert

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Useful Arts Audio BF-1 Overview

Enhance the clarity, detail, and dynamics of your instrument's sound with the BF-1 Tube Preamp/DI from Useful Arts Audio. Whether used between the instrument and amp, the instrument and a PA or recording device, or all of these at the same time, this all-purpose interface is designed to get the best sound out of a guitar, bass, or any instrument with a pickup while avoiding unintentional alteration of the sound's characteristics. Boasting an input impedance of 20 million Ohms, the BF-1 captures even tiny details in the signal and pumps the results out to an amp or console in useable form. The BF-1 can simultaneously drive an amp through its 1/4" output jack and a pro audio device via XLR.

Instead of stopping at massive impedance conversion, the BF-1 also offers a Class-A tube preamp, a two-band EQ, and dual outputs that can be used simultaneously for your amp and console. Bypass the EQ, and you have a choice of low gain (much like a traditional DI) or high gain, which gives you the ability to go straight to the converters for pure high-fidelity line-level recording with no other amplification needed. For bass players, the BF-1 can actually eliminate the need for an amp.

Small and rugged enough to put in a gig bag and use every day
Uses the input tube the same way as a tube microphone—to convert impedances without the high gain
Preserves the sound of the instrument in a way that the input stage of an amplifier or a console can't

Useful Arts Audio BF-1 Specs

Frequency ResponseFlat to -2 dB from 15 Hz to 80 kHz
Input Impedance20 MOhms
Output Impedance600 Ohms (XLR and TRS can be used simultaneously to drive an amp and a console)
GainLo Gain: ∞ to ±6 dB
Hi Gain: ∞ to ±18 dB
Switchable
EQ Frequency Bands (Fixed)2-band with true bypass (EQ available in lo-gain mode only)
-2 dB cut / +16 dB shelving boost at 120 Hz and 1 kHz
Tube Compliment2 x 12AU7 pure tube audio path
50/50 nickel/iron transformer balanced output
THD + N0.4% in lo-gain mode at max output (all 2nd harmonic), measured at 1 kHz 50 mV RMS input
S / N RatioBetter than 55 dB
ConnectorsGold-plated TS input and thru
Gold-plated TRS out (balanced/unbalanced)
XLR out
Power100-240 VAC, 50/60 Hz, IEC connector
Dimensions9.5 x 4.0 x 2.1" / 24.1 x 10.2 x 5.3 cm
Weight1.3 lb / 590 g
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