Raspberry Pi Zero Internet Radio Player from ICStation com 1857

2.5-5V 2X3W Mini Audio Class D Amplifier Board

http://www.icstation.com/2x3w-mini-audio-class-amplifier-board-p-1857.html

Features:

• dvanced Micro Devices, volume: 1.85 * 2.11cm
• Excellent
  noise suppression in the case is not connected to the input audio, the
  ear close to the speaker can not hear any noise
• Two-channel
  stereo, 5V power supply can output 3W +3 W power, can directly drive 4Ω
  8Ω small speaker output power, full of energy, good sound quality.
• Unique without LC filter Class D digital power board, and can be used directly to the computer's USB powered.
• Dual-panel wiring, properly solve the crosstalk between the ground potential balance and channel wiring
• Ultra-miniature
  design, can easily be placed in the internal space for a variety of
  digital products, ultra high zoom efficiency.
• All using the machine for the entire board soldering, hand soldering iron welding quality comparable!
• Rated working voltage 2.5-5V, limit operating voltage 5.5V.

Note:  The left and right channel output of the "negative" can not connect each other,otherwise it will burn the IC and install speaker before  input power