2X Crystal Radio Audio Output Amplifier for Headsets, Speakers Magnetic Earbuds

Description

2 pcs Crystal Radio Audio Signal Amplifier For Headset, Speakers or Non-Piezo Magnetic Earbuds
Allows you to use Non-Piezo Earbuds, Speakers or Headsets with your Crystal Radio
For Mono Sound from a Crystal Radio, just use one Input and One output
Size=1.85 x 2.11cm
1.Excellent noise suppression in the case is not connected to the input audio, the ear close to the speaker can not hear any noise
2.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.
3.Unique without LC filter Class D digital power board, and can be used directly to the computer's USB powered.
4.Dual-panel wiring, properly solve the crosstalk between the ground potential balance and channel wiring
5.Ultra-miniature design, can easily be placed in the internal space for a variety of digital products, ultra high zoom efficiency.
6.All using the machine for the entire board soldering, hand soldering iron welding quality comparable!
7.Rated working voltage 2.5-5V, limit operating voltage 5.5V.
8.
Note: The left and right channel output "negative" Can Not be connected together, otherwise it will burn out the IC
permanently
.
9. Do Not connect the audio outputs together
Notes:
1) The
Amplifier
does not have a volume control but this can be easily added using circuits available on the net.