Stereo amplifier with Bluetooth | audio enhancement | 2×30W (8Ω) / 2×50W (4Ω) | HDMI ARC | Subwoofer Out

Technical Specifications

Manufacturer: DSPPA
Model: MINI502
Type: Stereo integrated amplifier with Bluetooth
Rated power: 2 × 30W @ 8Ω; 2 × 50W @ 4Ω
Speaker impedance: 4–8 Ω
Inputs: AUX in, Phone in, Optical input, HDMI ARC, USB, USB-C
Outputs: Subwoofer Out, Speaker Out
Frequency range: 20 Hz – 20 kHz
Power supply: DC 24V / 4.16A
Dimensions: 185 × 155 × 50 mm

Features

Powerful yet compact 2.0/2.1 amplifier capable of driving bookshelf speakers, small floorstanding speakers, passive home soundbars, and a subwoofer (via dedicated Sub Out).

HDMI ARC – ideal for TV audio; allows volume control via TV remote and provides a cleaner signal compared to AUX.

Bluetooth connectivity enables instant music streaming from a phone or tablet.

Subwoofer Out – supports 2.1 audio systems, suitable for home theater zones, living rooms, and small commercial spaces.

Wide 20Hz–20kHz frequency range ensures rich bass reproduction and clear high frequencies.

Usage

For home users: Perfect for improving TV sound, driving bookshelf speakers, listening to music from a phone, USB, or computer, and setting up a compact 2.1 system.
For engineers/system integrators: Suitable for small commercial spaces (SPA, offices, waiting rooms), POS audio systems, small conference rooms.
For electricians/installers: Small, easy-to-mount enclosure, simple wiring, HDMI ARC simplifies TV installations.

Pros

2×50W power at 4Ω – good reserve capacity

HDMI ARC – major advantage for TV users

Subwoofer out – enables a 2.1 system

Multiple inputs: AUX, Phone, Optical, HDMI, USB, USB-C

Compact and easy to install

Cons

No WiFi / multiroom functions (Bluetooth + wired inputs only)

Not a traditional high-power AV receiver – more of a compact solution

Requires an external power adapter (DC 24V)