ESX QL800.8 8-Channel Class D Amplifier

The ESX QL800.8 is a QUANTUM QL 8-channel Class D digital amplifier for active multi-channel car audio systems. The official ESX page and owner manual confirm 8 x 80W RMS at 4 ohm, 8 x 125W RMS at 2 ohm and 4 x 250W RMS bridged at 4 ohm, with Dynamic Headroom technology for demanding active speaker layouts.

It includes high-level inputs with EPS, RCA inputs and outputs via cable connector, input selector CH2/4/6/8, copy mode for CH7/8 to CH5/6, bandpass filtering on CH3/4 and CH7/8, and a compact bass remote controller. ESX notes that the copy function can provide 2 x 250W RMS at 4 ohm on bridged channels 5/6 and 7/8 including bass control.

Key specifications

• 8-channel Class D digital amplifier
• 8 x 80/125W RMS at 4/2 ohm
• 4 x 250W RMS at 4 ohm bridged
• Dynamic Headroom Technology with up to 160W RMS per channel at 2 ohm
• High-level inputs with Error Protection System (EPS)
• RCA inputs and outputs via cable connector
• HPF 50-5000 Hz (CH1/2 + CH5/6)
• HPF 10-500 Hz and LPF 50-5000 Hz (CH3/4 + CH7/8)
• Copy mode CH7/8 > CH5/6 and bandpass function (CH3/4 + CH7/8)
• Dimensions 285 x 47 x 170 mm

Best used for

Use the QL800.8 when you need one amplifier to run an active multi-channel speaker system, a 2-way or 3-way front-stage setup, or a speaker-plus-subwoofer layout with paired bridged subwoofer channels.

Setup note

System design and channel assignment matter on multi-channel amplifiers. If you are unsure how to wire this into your vehicle, send us your system details by WhatsApp or email before ordering and we will help check the setup.