Wet Sounds STX Micro-4 — Compact Class-D 4-Channel Marine Amplifier

The Wet Sounds STX Micro-4 is a compact sealed Class-D 4-channel marine amplifier delivering 130W per channel at 2Ω in a die-cast aluminium chassis measuring just 9.25″ × 4″ × 1.5″. Designed for powersports and tight installation spaces, it features 3.5mm signal inputs, pass-through outputs for daisy-chaining a second amplifier, and a multichannel switching mode that eliminates the need for Y adaptors.

$699.00

The STX Micro-4 is part of Wet Sounds’ Stealth STX Micro Series — a compact, sealed Class-D 4-channel amplifier designed for powersports enthusiasts and any installation where space is severely limited. At just 9.25″ long, 4″ wide, and 1.5″ high, the STX Micro-4 fits into spaces that simply won’t accommodate a standard marine amplifier, without compromising on output or features.

The completely sealed die-cast aluminium chassis provides maximum protection against water and dirt intrusion — making it equally at home in an ATV, UTV, or any marine application where exposure to the elements is a constant. 3.5mm signal input connections allow seamless integration with Wet Sounds Bluetooth controllers or direct connection to most smartphone headphone outputs, keeping the installation simple and flexible.

Output power of 80W per channel at 4Ω stereo, 130W per channel at 2Ω stereo, or 280W per channel bridged to mono at 4Ω gives the STX Micro-4 enough headroom to drive a complete speaker system effectively. Fully variable high-pass and low-pass crossovers provide precise control over frequency distribution across the system. Pass-through outputs allow a second amplifier to be daisy-chained directly from the STX Micro-4, and the multichannel switching mode enables all four channels of output from just two channels of input — eliminating the need for Y adaptors and keeping the signal path clean. Backed by Wet Sounds’ 2-year limited warranty.

Specifications

  • Channels: 4
  • Amplifier class: Class-D
  • RMS power @ 4Ω stereo: 80W × 4
  • RMS power @ 2Ω stereo: 130W × 4
  • RMS power @ 4Ω bridged: 280W × 2
  • Frequency response: 10Hz – 40kHz
  • S/N ratio: >95dB @ 1W
  • Total harmonic distortion: 0.05%
  • Input sensitivity: 150mV – 7V
  • Signal input: 3.5mm
  • Pass-through outputs: Yes
  • Multichannel switching: Yes (4 channel output from 2 channel input)
  • Crossovers: Fully variable high-pass and low-pass
  • Chassis: Sealed die-cast aluminium
  • Dimensions: 9.25″ L × 4″ W × 1.5″ H
  • Series: Stealth STX
Wet Sounds STX Micro-4 — Compact Class-D 4-Channel Marine Amplifier
Wet Sounds STX Micro-4 — Compact Class-D 4-Channel Marine Amplifier - Image 2
Wet Sounds STX Micro-4 — Compact Class-D 4-Channel Marine Amplifier - Image 3