ESX Quantum QL800.8

The Quantum QL800.8 from ESX is a state-of-the-art 8-channel amplifier that stands out with its advanced Class D technology and Dynamic Headroom technology. This efficient technology enables a remarkable output of up to 160 watts RMS per channel. With its distinctive features such as a massive aluminum heat sink, MOSFET PWM power supply and high-level inputs with error protection system, the Quantum QL800.8 is a masterpiece of audiophile technology. Configured for performance-optimized 2- or 3-way systems, this amplifier offers better performance than it might nominally appear at first glance. The full channel bridgeability allows flexible adaptation to your individual needs.

• Compact QUANTUM amplifiers in Class D technology have been the spearhead of the ESX range for years. The range extends from the 4 x 300 watt RMS QE1200.4, which won an EISA award, to 1 ohm stable monoblocks, to the palm-sized QS-TWO, which fits anywhere. The large selection allows for a wide range of combination options. But that's not all: ESX is now expanding the Quantum range to include two more Class D multi-channel power amplifiers, which offer a whopping 6 x or 8 x 125 watt RMS at 2 ohms, top sound and the latest features.
• The new models of the QUANTUM QL series occupy a special position in the ESX range in this context. Ideally, 6- and 8-channel amplifiers are configured so that they do not drive high-performance 12- or 15-inch subwoofers, but rather develop their potential in 2- or 3-way systems. ESX multi-channel power amplifiers are designed to use the many channels and setting options to optimally supply tweeters, midrange speakers or bass-midrange speakers. In this configuration, they then have a much higher output than might be assumed at first glance - specifically up to 160 watts RMS per channel. How is that possible? Very simple! By actively distributing the frequency ranges across multiple channels or speakers in the vehicle, all speakers never play at full power at the same time. In this case, the amplifier uses the power reserves of the generous power supply, which all channels can access if necessary. ESX calls this feature Dynamic Headroom Technology, or DHR for short.
• If you decide to use four 2-channel models instead of one 8-channel amplifier, for example, the DHR function or the dynamic power gain would not be possible. This is because the power supply of the first amplifier is not able to drive the channels of the second amplifier. In this sense, 6- and 8-channel ESX amplifiers have a dynamic advantage in multi-channel applications.
• If, for budget reasons, you plan to use just one Quantum amplifier to provide a complete sound system for the vehicle, including a subwoofer, this is no problem either, thanks to the features and the ability to bridge all channels. It is even possible to control the bass level using a wired bass remote. We recommend bridging channels 5/6 with the QL800.6, which then provides 250 watts of mono power. The QL800.8 can do even more, and thanks to the copy function, it can provide 2 x 250 watts RMS at 4 ohms on the bridged channels 5/6 and 7/8, including bass control. If you want even more convenience and performance, you can combine the new multi-channel amps with a monoblock QL800.1, for example, which then confidently delivers up to 800 watts RMS at one ohm.
• Advanced Class D technology with very high efficiency
• Dynamic Headroom technology*
• Max.DHR power per channel up to 160 watts RMS @ 2 Ω
• Selected and audiophile-tuned components
• Solid aluminum heat sink
• Heavy side panels made of cast aluminum
• High-level inputs with Error Protection System (EPS)
• Automatic power-on function
• Start/Stop Ready
• MOSFET PWM power supply
• 3-way protection circuit
• Compact bass level remote control

• 8-channel Class D digital amplifier
• 8 x 80/125 Watt RMS @ 4/2 Ω
• 4 x 250 Watt RMS @ 4 Ω bridged
• HPF 50-5000 Hz (CH1/2 + CH5/6)
• HPF 10-500 Hz (CH3/4 + CH7/8)
• LPF 50-5000 Hz (CH3/4 + CH7/8)
• Copy mode CH7/8 > CH5/6
• RCA inputs via Molex
• RCA outputs via Molex
• bandpass function (CH3/4 + CH7/8)
• input selector switch CH2/4/6/8
• Dimensions 285 x 47 x 170 mm
• efficiency up to 87%