Squeezebox Duet Network Music System: Listen to the music you love in any room in your home. Listen to the music you love in any room in your home. Browse and play songs from your personal collection, online music services, and Internet radio. Enjoy crystal clear, CD-quality audio in your home theater, the stereo in your bedroom, the mini system in the kitchen — anywhere you have audio gear. Key features of the Dayton APA150 are high current, discrete power transistors (used in premium amp designs), a hefty toroidal power supply transformer, low-noise forced air cooling, a fully adjustable—and defeatable—electronic 50-150 Hz low-pass filter (18 dB/octave), and complete protection against electrical shorting and thermal overload. Also included is auto-on/off, silent turn-off with no audible transient, gold plated RCA inputs/outputs, and 5-way binding posts. Features and Specifications: *Measured power output: 2 x 75 watts RMS (into 4 ohms @ less than 0.01% THD) *Signal-to-noise ratio: greater than 100 dB *Class A/B design topology *Input impedance: 47k ohms *Auto-on sensitivity: 3 mV *Voltage requirement: 120/230 VAC, 60/50 Hz *Dimensions: 5-1/2" H x 6" W x 11-1/2" D.