Quilter Bass Block V803 Head

The Quilter Labs Bass Block V803 is a powerful and versatile bass amplifier that combines modern Class-D amplification with the warmth of vintage tube sounds. A robust 800W output ensures exceptional performance across various speaker setups, supported by a quiet, variable-speed fan for reliable, heavy-duty use.

Key Features:

Power and Performance:Delivers over 800W to handle any speaker with ease. A high-current Class-D power section that combines old-school dynamic warmth with the efficiency of modern technology.

Three Unique Amp Modes:The Voice switch provides three distinct amplifier profiles – MODERN ( same system as prior 800 and 802 models, with tight solid-state output and “bottomless” limiter). WARM (tube-type output impedance with the same bottomless limiter), and Q-TUBE (tube-type output impedance with classic tube clipping) – each delivering a unique dynamic response ranging from tight, controlled solid-state performance to lush, vintage tube warmth and overdrive.

Tone Shaping:A 3-band EQ with four controls (Bass, Midrange with sweepable frequency, and Treble) offers precise tonal adjustments.

Connectivity and Controls:Includes two high impedance inputs (Flat and Scoop), FX Loop, headphone output with cab-sim, and an XLR Line Out with integral cab-sim and grounding switch. The GAIN control adjusts drive and sensitivity, while the MASTER control matches the output power to various speaker ratings.

Additional Features:The rear panel offers dual Speakon Combo connectors for speaker compatibility, a locking AC cord for reliable power connection, and universal AC power support for use worldwide. The XLR Line Out pre-MASTER for consistent signal level regardless of where you set stage power.

User Convenience:Features a MUTE-ACTIVE-PASSIVE switch with a bright LED indicator, and an FX Return that can be used as a stealth input for backing tracks. The headphone output automatically switches from FRFR on MODERN to cab-sim on WARM and Q-TUBE settings.