Quilter Labs Bass Block V803 800W Bass Amp Head Standard

The Quilter Labs Bass Block V803 is a cutting-edge bass amplifier head offering an impressive 800W of power, making it ideal for any gig or studio setup. Built to provide the warmth and responsiveness of vintage tube amps while utilizing modern Class-D amplification technology, the Bass Block V803 delivers exceptional clarity and tonal flexibility. With three unique amp modes, a full-featured 3-band EQ, and extensive connectivity options, this amp head covers all tonal bases from tight, controlled sounds to lush, overdriven tube tones, ensuring it meets the demands of modern bass players.

800W Power and Three Amp Profiles

Featuring an 800W Class-D power section, the Bass Block V803 is built to handle virtually any speaker cabinet with ease. The Voice switch offers three distinct profiles—Modern, Warm, and Q-Tube—each delivering unique tonal characteristics. Whether you prefer the tight, solid-state performance of the Modern setting, the tube-like warmth of the Warm mode, or the classic tube clipping of the Q-Tube profile, this amp head provides versatility for any musical style.

Precise Tone Shaping with 3-Band EQ

The Bass Block V803 includes a versatile 3-band EQ with four controls for detailed tone shaping. The Bass, Midrange (with a sweepable frequency control from 250Hz to 1kHz), and Treble knobs offer a wide range of tonal options, allowing players to adjust their sound to suit any playing situation. Whether you need deep, rumbling lows or crisp, cutting highs, this EQ section ensures that you can dial in your perfect bass tone with precision.

Comprehensive Connectivity for Any Setup

This amp head is packed with connectivity options, including two high-impedance inputs (Flat and Scoop), a buffered effects loop, an XLR Line Out with cab-simulation and a ground lift, and dual Speakon™ combo connectors for speaker compatibility. The XLR Line Out ensures a consistent signal for DI recording or live use, while the headphone output automatically adjusts from full-range flat response (FRFR) on Modern mode to cab-sim on the Warm and Q-Tube modes, making it a versatile choice for both stage and studio environments.