Specifications - from the user manual. No power consumption listed but power output is listed as 30Watts RMS into 4 ohms with 10%THD - Not what I would call quality sound but maybe ok for your rear channel.
Audio Input: Wireless • Stereo, 16-bit, 48 KHz, uncompressed
• Signal-to-Noise Ratio: 87 dB
Audio Output: High
Efficiency Class D,
• Supports 4 to 16 ohm speakers
• Audio output power: 2 × 30 W (RMS)
into 4 ohms (no more than 10% THD)
Transmission Delay • 15-20 ms
Power Supply • AC 100-240 V ~ 50/60 Hz
The answer form says to add recommend products. I would add wires instead of this product.