ESX Quantum QL800.6

The QL800.6 is a powerful 6-channel amplifier from ESX that is part of the QUANTUM series. Thanks to state-of-the-art Class D technology, this amplifier offers innovation and performance in a compact format. It is equipped with several technical features, including Dynamic Headroom technology, high level inputs with Error Protection System and a compact bass level remote control. Whether for power-intensive subwoofers or tweeters and mid-range speakers, the QL800.6 delivers first-class sound quality and is flexible in use. Discover the possibilities offered by this ESX amplifier.

• Compact QUANTUM amplifiers with 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 has won an EISA award, to 1 ohm stable monoblocks and the palm-sized QS-TWO, which fits in anywhere. The large selection allows for many possible combinations. But that's not all: ESX is now expanding the Quantum range with two more Class D multi-channel power amplifiers, which offer a full 6 x or 8 x 125 watts RMS into 2 ohms, top sound and state-of-the-art features.
• The new models in the QUANTUM QL series occupy a special position in the ESX range in this context. Ideally, 6- and 8-channel amplifiers are configured in such a way that they do not drive power-intensive 12- or 15-inch subwoofers, but rather unfold their potential in 2- or 3-way systems. ESX multi-channel amplifiers are designed to use the many channels and setting options to optimally supply tweeters, mid-range drivers or bass-midrange drivers. In this configuration, they have a much higher output than might be expected at first glance - up to 160 watts RMS per channel. How is this possible? Quite simply! By actively distributing the frequency ranges to several 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 unit, which all channels can access if necessary. ESX refers to this feature as 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 unit of the first amplifier is not able to drive the channels of the second amplifier. From this perspective, 6 and 8-channel ESX amplifiers have a dynamic advantage in multi-channel applications.
• If, for budget reasons, it is nevertheless planned to use just one Quantum power amplifier to provide a complete sound system for the vehicle, including a subwoofer, this is also no problem thanks to the equipment and bridgeability of all channels. It is even possible to control the bass level via a wired bass remote. We recommend bridging channels 5/6 of the QL800.6 with 250 watts of mono power. The QL800.8 can do even more, providing 2 x 250 watts RMS at 4 ohms on the bridged channels 5/6 and 7/8, including bass control, thanks to the copy function. If you want even more convenience and power, combine the new multi-channel amps with a QL800.1 monoblock, for example, which then delivers up to 800 watts RMS into 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 cast aluminum side panels
• High-level inputs with Error Protection System (EPS)
• Automatic switch-on function
• Start/Stop Ready
• MOSFET PWM power supply unit
• 3-fold protective circuit
• Compact bass level remote control

• 6-channel Class D digital amplifier
• 6 x 80/125 Watt RMS @ 4/2 Ω
• 3 x 250 Watt RMS @ 4 Ω bridged
• HPF 50-5000 Hz (CH1/2)
• HPF 10-500 Hz (CH3/4 + CH5/6)
• LPF 50-5000 Hz (CH3/4 + CH5/6)
• RCA inputs via Molex
• RCA outputs via Molex
• Bandpass function (CH3/4 + CH5/6)
• Input selector switch CH2/4/6
• Dimensions 254 x 47 x 170 mm
• Efficiency of up to 90%