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SIGNUM SX-FIVE
Technical Highlights
- 600 Watts RMS power, impedance 4/3/2 Ohm, Class D efficiency.
- 5 channels with separate subwoofer channel, compact dimensions.
- Bass level remote control included, RCA inputs, EPS system.
- More technical details
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SIGNUM SX-FIVE by ESX
Discover the SIGNUM SX-FIVE, a 5-channel amplifier from ESX that is perfectly suited for your car audio setup thanks to its compact design and efficiency. This mini Class-D amplifier offers 600 watts RMS and impresses with excellent sound and dynamic bass. Thanks to modern Class D technology, heat generation remains low, allowing for space-saving installation. A special highlight is the included bass level remote control, which allows you to conveniently and flexibly adjust the bass from the driver's seat. The device is supported by high-quality features such as the die-cast aluminum heatsink, RCA inputs, and an automatic turn-on function. Ideal for discreet installations, the SIGNUM SX-FIVE offers everything you need for a complete and impressive audio experience.
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 minimal dimensions, excellent sound, and surprisingly high power outputs of up to 600 watts RMS. These compact powerhouses rely on state-of-the-art Class D technology, which, thanks to its high efficiency, enables low heat generation and thus makes the particularly space-saving design with only 83 mm width and 38 mm height possible in the first place. This makes the mini amplifiers ideal for discreet installations, whether under the seat, in the side panel, or in the trunk. A special practical advantage: The SX-FIVE, SX-TWO, and SX-ONE models come with a bass level remote control. This allows the bass to be conveniently adjusted from the driver's seat at any time – perfect for anyone who values flexibility and maximum control in everyday life.
Features
- Efficient Class D amplifier with compact dimensions
- Die-cast aluminum heatsink with optimal cooling properties
- RCA inputs via cable plug
- Compact bass level remote control
- High-level inputs with Error Protection System (EPS®)
- Automatic turn-on function
- Start/Stop Ready
Technical Data
- 5-Channel Mini Class D Digital Amplifier
- 4 x 50/65/80 Watts RMS @ 4/3/2 Ω
- + 1 x 150/280 Watts RMS @ 4/2 Ω (Subwoofer)
- HPF/LPF 50 - 5000 Hz (FRONT)
- HPF/LPF 50 - 5000 Hz (REAR)
- LPF 50 - 250 Hz (SUB)
- Subsonic 10 - 50 Hz (SUB)
- Dimensions 83 x 38 x 173 mm
- Low THD-Design: Distortion 0.009% @5W
- Efficiency up to 85%

