Pyle Home Home Audio Power Amplifier System with Bluetooth - 2X120W Mini Dual Channel Mixer Sound Stereo Receiver Box w/ RCA, AUX, Mic Input - For Amplified Speakers, PA, Theater, Studio Use -PTA4
Amazon.com: Pyle Home Bluetooth Audio Power Amplifier 2X120 Watt - Portable 2 Channel Surround Sound Stereo Receiver w/ USB - Amplified Subwoofer Speaker, CD DVD, MP3, iPhone, Phone, Theater, PA System -PTAU45.5 :
You Can DIY!: An Ecological Power Supply for Power Amplifiers | audioXpress