ESX SX-FOUR - 4-channel mini digital amplifier

SX-FOUR
With the SIGNUM SX Mini series, ESX expands its extensive car audio portfolio with four brand-new MINI Class-D amplifiers that set new standards with their minimal dimensions, outstanding sound, and surprisingly high power output of up to 600 watts RMS. These compact powerhouses utilize state-of-the-art Class D technology, which, thanks to its high efficiency, enables low heat generation, thus making the exceptionally space-saving design—only 83 mm wide and 38 mm high—possible. This makes the mini amplifiers ideal for discreet installations, whether under the seat, in the side panel, or in the trunk.
Thanks to its wide-range crossovers extending to 5000 Hz and multiple channels, the SX-FOUR is highly versatile. With a very low total harmonic distortion of 0.004%, it is ideally suited for audiophile front/rear combinations or fully active 2-way systems. Three-channel operation with a subwoofer is also possible thanks to the high power output of 250 watts RMS in bridged mode.
Features

• Efficient Class D amplifier with ultra-compact dimensions
• Die-cast aluminum heatsink with optimal cooling properties
• RCA inputs via cable connectors
• High-level inputs with Error Protection System (EPS®)
• Automatic power-on function
• Start/Stop Ready

Technical Specifications

• 4-channel mini Class D digital amplifier
• 4 x 80/125 watts RMS @ 4/2 Ω
• 2 x 250 watts RMS @ 4 Ω bridged
• HPF/LPF 50 - 5000 Hz (FRONT)
• HPF/LPF 50 - 5000 Hz (REAR)
• Input selector: 2CH/4CH
• Dimensions: 83 x 38 x 153 mm
• Low THD design: 0.004% distortion @ 5W
• Efficiency up to 87%