Quilter Labs Bass Block V803 800W Bass Amp Head
A Class-D 800W Bass Amp Powerhouse With Modern & Vintage Voices
FREE UK Delivery
Earn 699 Loyalty Points
Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose click and collect as your delivery option online or, during store opening hours, call our sales team at 01483 456777 to place a 10% deposit.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that, unless you have paid a deposit to reserve the item, it will continue to be free, both online and in-store, for another customer to buy. Therefore we would advise you to place a 10% deposit by either using the on-line click and collect service or calling us 01483 456777.
SKU: BASSBLOCKV803
You might also need
Product Description
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.
The Bass Block V803 is designed to meet the demands of professional musicians, providing robust performance and flexibility. Whether seeking the precision of modern amplification or the nostalgic tone of vintage tube amps, this amplifier provides high-quality sound and reliable operation in a compact, modern package.
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.
Specifications
- Inputs: 1meg, Flat and Scoop, 4V peak
- Input switch: Mute, Active, Passive
- Amp voice switch: Modern, Warm & Q-Tube profiles
- 4-knob EQ: Bass +/- 15dB at 100Hz, Mid +/- 15dB with 250-1K Freq Sweep. Treble +/-15dB at 1kHz.
- Effects loop: Buffered, 1K Send, 47K Return, 1V peak signal level
- XLR line out: 1.4V (+4dBu), 600 ohms balanced
- XLR ground lift: Ground, Lift Auto
- Output power: Up to 450W at 8 ohms, 800 watts at 4 ohms, 25Hz-15kHz
- Input (Flat or Scoop): 1/4" mono, 2M, 4Vpk Passive, 12Vpk Active
- FX Loop: ¼" mono,1V full scale, 1K out, 47K Input (with FX Send lifted)
- XLR Out (pre Master): Balanced, 600 ohms, -6db. Ground lift switch.
- AC Power Req: 100–240Vac, 50–60 Hz, 500 W average, 1500W peak
- Power Output – MODERN: 250W - 16 ohm, 450W - 8 ohm, 800W - 4 ohm
- Power Output - WARM, QTUBE: 250W - 16 ohm, 450W - 8 ohm, 500W - 4 ohm
- Headphone (post Master): 1/4" TRS, 39 ohms each side
- Speaker Output: 4-8 ohms, 90V, 25A peak
- Dimensions: 3.125" H x 8.5" W" x 7.75" D (7.9375cm x 21.59cm x 19.68cm)
- Weight: 3.78 lbs (1.715 kg)