Pyle KTHSP390S 4 Pairs of 150W 5.25" In-Wall / In-Ceiling Stereo White Speakers w/ 300W Digital Home Stereo Receiver w/ USB/SD/AUX Input, Remote w/ 4 Channel High Power Stereo Speaker Selector Qty 8 In-Wall / In-Ceiling 2-Way Speakers -150 Watt Rated Peak Power -  High Compliance Polymer Tweeter - Polypropylene Cone with Rubber Edge - Perfect for Custom Installations & Applications Frequency Response: 80Hz-20kHz - Impedance: 8 Ohms - Sensitivity: 88 dB - Mounts Flush on Walls or Ceilings - Built-in Electronic Crossover Network - Environmentally Friendly ABS Construction Includes Changeable Round & Square Stain Resistant Grills - Cut-Out Template for Easy Installation - Unit Dimensions (L x H): 8.3 x 3.0 - Cutout Diameter: 6.8 - Mounting Depth: 3.0 300W Receiver - AM/FM radio with digital display screen - Auto scan, radio station PRE/NEXT control - 50 radio station pre-set memory - Volume/balance/treble/bass gain control for main channel 2 microphone inputs - Two RCA input source - USB Input - Also Included 4 Channel Speaker Selector