Features
1. TPA3251D2 power amplifier chip scheme is adopted: TPA3251D2 is a high-performance class D power amplifier, which has class D efficiency and can bring real high-end sound quality. The device features advanced integrated feedback design and proprietary high-speed gate driver error correction (pure path TM HD). This technology can make the device maintain ultra-low distortion in the whole audio frequency band and show high-definition sound quality at the same time.
2. Bluetooth-compatible 5.1 audio power amplifier module: 2.1 dual channel stereo output, output power 220W * 2 (left and right channels) + 350W (subwoofer), pure HiFi sound quality. The treble is pure and transparent, the midrange is gentle and delicate, and the bass is surging and shocking.
3. Classic appearance multifunctional main knob: the main knob adopts rotary encoder only used in high-end power amplifier to realize 360 degree stepless tuning. It feels smooth, one key start and stop, long press to start and stop, and the operation is simple and convenient.
4. Support mobile app control: newly upgrade Sini link app; Support to modify Bluetooth-compatible name; Set Bluetooth-compatible password; Off / on tone
5. Supported audio input: Bluetooth-compatible 5.1, AUX, USB sound card, USB flash disk
6. Heat dissipation mechanism: Heat sink + fan for heat dissipation, safe and worry free. Large area aluminum alloy heat sink with special-shaped structure and fan support are adopted to reduce the temperature and effectively ensure the full power operation of the product

Specification
1. Power supply: Above DC12-38V/10A
2. Bluetooth version: 5.1
3. Audio channel: 2.1 channels
4. Audio input: Bluetooth-compatible + AUX + USB flash disk + USB sound card
5. Audio output: left and right channels + subwoofer
6. Frequency range: 20Hz -- 20KHz
7. Volume adjustment: Encoder knob adjustment, smooth feel
8. Output power of left and right channels:
- 220W/3ohms--36VDC
- 175W/4ohms--36VDC
- 100W/8ohms--36VDC
9. Output power of subwoofer:
- 355W/2ohms--36VDC
- 250W/3ohms--36VDC
- 195W/4ohms-36VDC
10. Protection mechanism: Overvoltage, undervoltage, clipping, short circuit, overheating and other protection
11. Unique functions: Support sinlink app, modify Bluetooth-compatible name, set Bluetooth-compatible password, and turn off / on prompt tone
12. Product size: 130mm x 116mm x 27mm