Sure Electronics AA-AS32157 mini stereo amplifier

The AA-AS32157 integrates a high-quality rotary encoder which employs high-quality digital volume control IC ensuring precise shaft rotation and accurate volume adjustment.
The AA-AS32157 supports dual-channel amplification and each channel is rated at 15W. 
You can use it to drive any 4Ω or 8Ω passive speakers. 

Highlights

• Size: 16.3cm x 7.4cm x 4.8cm
• Signal Noise Ratio: 90dB
• Power supply Optional

Product details

Sure Electronics AA-AS32157 | 2 x 15 Watt 4 Ohm Class D Digital Audio Amplifier - TA2024

The AA-AS32157 houses TA2024 audio amplifier chip which is currently popular around the world. It not only provides dream sound but also has high efficiency, thus it can dissipate the heat after long-time working to ensure that the amplifier can works in a stable condition for long time. 
A high-quality rotary encoder is integrated in the AA-AS32157 which employs high-quality digital volume control IC ensuring precise shaft rotation and accurate volume adjustment. AA-AS32157 supports dual-channel amplification and each channel is rated at 15W. With built-in MCU, this product can provide over/under voltage protection, low current protection and display LED state. 
This product can be powered by any DC power supply ranging from 9 to 14V. You can use it to drive any 4Ω or 8Ω passive speakers.

Suggested power supply solution: Huntkey 12V 3A 36W AC/DC Power Adapter (PS-SP11111)