The tone you love. The power you need.
The BF700 is Useful Arts’ first bass power amplifier—a complete, gig-ready system that pairs an audiophile-grade Class A tube preamp with a muscular 700-watt Class D power amp. It’s the natural evolution of our acclaimed BF Series, built for players who demand rich tone, clean headroom, and real-world versatility.
Useful Arts redefined electric bass sound with the BF-1 tube preamp/DI and the BF-S studio version. Known for their lush harmonic detail and rugged build, these units earned praise from top-tier bassists and engineers alike.
The BF700 answers the call for a full-range solution: the unmistakable BF tone, now with integrated power for live gigs, studio sessions, and speaker cabinet recording. It expands the BF Series with enhanced sound-shaping tools and pro-grade utility features.
Ultra-high impedance input preserves the instrument’s true voice
Exclusive impedance conversion delivers unmatched clarity and depth
Linear tube power supply ensures near-silent operation and massive headroom (noise floor < -70 dBu)
Tube-based 2-band EQ with ear-tuned curves for musical precision
Standard DI features: Thru jack, balanced XLR + TRS outputs, ground-lift switch
Road-ready construction built to last
Signature BF sound: rich, full, and true
Color control adds pentode-generated second-order harmonics—dial in warmth, punch, or funk
Effects loop for seamless integration with pedals or rack gear
Relay-based switching keeps your signal path pristine
Brick-wall high-pass filter at 50 Hz for tight low-end control
700W Class D power amp: loud, clean, and lightweight
Whether you're playing a theater gig, tracking in the studio, or running direct to FOH, the BF700 delivers. It’s built to travel, built to perform, and built to sound incredible—no matter the setup. From crystal-clear articulation to fat, vintage warmth, the BF700 adapts to your tone and your workflow.
Plug in. Power up. Play loud. Your new favorite gigging amp is here.
