Useful Arts Audio BF-1 Tube Instrument Preamp and DI

Useful Arts Audio BF-1 Tube Instrument Preamp and DI

Useful Arts Audio BF-1 Tube Instrument Preamp and DI

B&H # USBF1 MFR # BF-1

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Product Highlights

  • Use on Any Instrument with a Pickup
  • Enhances Detail & Dynamics
  • 20 Million-Ohm Input Impedance
  • 15 Hz - 80 kHz Frequency Response
  • Class-A Tube Preamp
  • Two-Band EQ with True Bypass
  • 1/4" and XLR Simultaneous Outputs
  • 6/18 dB Switchable Gain
  • SNR Better than 55 dB
  • Small, Portable & Rugged
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This item is noncancelable and nonreturnable.

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Useful Arts Audio BF-1 overview

  • 1Description

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
In the Box
Useful Arts Audio BF-1 Tube Instrument Preamp and DI
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    Useful Arts Audio BF-1 specs

    Frequency Response Flat to -2 dB from 15 Hz to 80 kHz
    Input Impedance 20 MOhms
    Output Impedance 600 Ohms (XLR and TRS can be used simultaneously to drive an amp and a console)
    Gain Lo Gain: ∞ to ±6 dB
    Hi Gain: ∞ to ±18 dB
    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 Compliment 2 x 12AU7 pure tube audio path
    50/50 nickel/iron transformer balanced output
    THD + N 0.4% in lo-gain mode at max output (all 2nd harmonic), measured at 1 kHz 50 mV RMS input
    S / N Ratio Better than 55 dB
    Connectors Gold-plated TS input and thru
    Gold-plated TRS out (balanced/unbalanced)
    XLR out
    Power 100-240 VAC, 50/60 Hz, IEC connector
    Dimensions 9.5 x 4.0 x 2.1" / 24.1 x 10.2 x 5.3 cm
    Weight 1.3 lb / 590 g

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