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User Manual for Useful Arts Audio BF-1 Tube Instrument Preamp and DI Click to enlarge the picture
Contents of the user manual for the Useful Arts Audio BF-1 Tube Instrument
- Product category: Microphone Preamps Useful Arts Audio
- Brand: Useful Arts Audio
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Useful Arts Audio Microphone Preamps
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User manual for the Useful Arts Audio BF-1 Tube Instrument contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Useful Arts Audio product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Useful Arts Audio user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Useful Arts Audio product will considerably shorten its lifespan!
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Product description 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
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Technical parametersUseful 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
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 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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