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The Wondom AA-AS43112 GAU4 is an amplifier module designed for integrators looking for a compact and versatile multi-channel amplification solution. Initially designed for gaming and arcade applications, this 4.1 module based on several Texas Instruments TPA3116s is also suitable for compact home cinema setups, sim racing installations or monitoring systems requiring separate bass management. The combination of comprehensive connectivity, a programmable DSP and lockable physical controls makes it an amplification platform that can be adapted to the varied constraints of professional environments and demanding DIY projects.
The GAU4 benefits from a 4.1 architecture based on several Texas Instruments TPA3116 chips, delivering 4×50W under 4Ω for the mid-high channels, while the subwoofer output reaches 100W under 2Ω with a 24V DC power supply, creating a particularly immersive sound spatialisation.

The module directly integrates a 3.5mm analogue jack input, USB and digital optical input, eliminating the need for external switches. Beyond this convenience, the digital inputs effectively isolate the signal from parasitic ground loops, preserving sound clarity in multi-equipment installations. This design allows direct connections to consoles, motherboards, smartphones, or televisions without complex rewiring.

Four onboard potentiometers independently adjust the stereo/subwoofer balance, bass, mid-treble tone, and overall volume. This hardware approach offers instant, latency-free manipulation, while screen-printed markings ensure repeatability of settings. A switch deactivates the potentiometers after calibration, preventing accidental changes during operation, which is particularly useful in public spaces.
The integrated digital signal processor, accessible via the ICP5 programmer, allows real-time adjustment of equalisation, cut-off filters, inter-channel delays and bass boost during playback. This iterative approach significantly speeds up acoustic tuning. Saving and importing DSP profiles allows for the deployment of an optimal sound signature across multiple installations, ensuring perceptual consistency regardless of room variations.

The aluminium chassis ensures effective passive heat dissipation during continuous full-power operation, while also acting as electromagnetic shielding. On-board active protection monitors overvoltage, undervoltage, temperature, parasitic current and short circuits, ensuring rock-solid reliability.

Self-locking terminals eliminate accidental disconnections, while differentiated Micro-Fit and Mini-Fit connectors physically prevent polarity reversal. Integrated aluminium fins with pre-drilled mounting points allow direct mounting on the chassis without intermediate brackets, optimising space in applications with limited space.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Amplifier module |
| Imputs | 1x Jack 3.5mm 1x USB-C 1x Optical Toslink |
| Outputs | 5x Molex |
| Output power | 4x50W @ 4Ω + 100W @ 2Ω |
| Gain | Jack 3.5 input, stereo : 26.8dB Entrée Jack 3.5, mono : 35.4dB Optical input, stereo : +34.1dB(Vrms/FS) USB input, stereo : 12.8 Vrms/FS |
| Input sensitivity | Jack 3.5 input, stereo : 775mVrms Optical input, stereo : -11dBFS |
| Signal-to-noise ratio (SNR) | Jack 3.5 input, stereo : 94.9dB Entrée Jack 3.5, mono : 91.2dB Optical input, stereo : 95dB USB input, stereo : 93.8dB |
| Total harmonic distortion more noise (THD+N) | Jack 3.5 input, stereo : 0.24% Entrée Jack 3.5, mono : 0.01% Optical input, stereo : 0.21% USB input, stereo : 0.20% |
| Noise level | Jack 3.5 input, stereo : 237.4µVrms Entrée Jack 3.5, mono : 460.9µVrms Optical input, stereo : 233.6µVrms USB input, stereo : 262.5µVrms |
| General | |
|---|---|
| Dimensions | 190 x 116 x 37mm |
| Package | 1x Wondom AA-AS43112 GAU4 |
| Input | Jack 3.5mm |
| Input | USB |
| Input | Optical |
| Output | Molex |
| Channel | 4.1 |
| Class | Class D / T |
| Amplifier chip | TPA3116 |
| Power (W) | 100.0 |
| Power (W) | 50.0 |