1) Material Glass fiber  <br><br>2) Specification Perfect "Class D" architecture? Miniature and high quality? Full-bridged stereo output? 64-step gain adjustment? Frequency response: 20Hz to 20KHz(・dB)? Signal/Noise Ratio: 85dB (f=22 to 22KHz? THD=1%); High Output Power: 1.2W @ 8ohm? < 10.0% THD+ N? 2.0W @ 4ohm? < 10.0% THD+ N; High Efficiency: 85% @ 1.2W 8ohm? 88% @ 2.0W 4ohm; Audiophile Quality Sound: 0.19% THD+N @ 0.5W 8ohm? 0.17% THD+N @ 1.0W 4ohm  <br><br>Features Mounting holes facilitate installation and fixing; Several wiring methods facilitate connection; Excellent heat dissipation eliminates the requirement of an extra heat sink; Over/under voltage turn off; Over current protection; Over temperature protection; Over 90% components are SMT based? which are reliable and environment-friendly; Ideal for DIY and industrial applications  <br><br>3) Application Home Active Speaker; Home Theater Receiver; Multi-channel Distribution; Active DVD System; Mini/micro Systems  <br><br>English Manual/Spec YES  <br><br>4) Packing List 1 x PAM8803 Class-D Audio Amplifier Full-featured Board  <br><br> -1 x 3.5mm male to 3.5mm male FM audio cable (150cm)  <br><br> -1 x Power cord (150cm)  <br><br>5) Dimensions: 7.2 x 5.4 x 2.0cm <br><br>6) Weight: 67g <div class="params_begin">Specification:</div><div class="params_group"><table border="0" class="params_group_table">  <tr>	<td class="params_group_name">			Package Weight		</td>	<td class="params_props">			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">One Package Weight</td>			<td class="params_value">				0.15kgs / 0.33lb			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Qty per Carton</td>			<td class="params_value">				160			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Weight</td>			<td class="params_value">				12.90kgs / 28.44lb			</td>					</tr>		  </table>		</div>			<div class="params_prop last_prop">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Size</td>			<td class="params_value">				32cm * 25cm * 30cm / 12.6inch * 9.84inch * 11.81inch			</td>					</tr>		  </table>		</div>		</td>  </tr></table></div><div class="params_end"></div> <p>&nbsp;<img src="//lh3.googleusercontent.com/-oYp3-Nj18a0/Vzl4ATG8byI/AAAAAAAAiB0/flsa52IW_io-CXISwM-o_wO6Gth2NbbmgCCo/s829/sg%2Bback.jpg" alt="" /></p>