infi audio tube amplifier headphone amplifier with bluetooth home theater stereo receiver desktop 60w class ab hybrid integrated amp for home audio speakers infi audio <p><b>technical specs:</b></p> <p> <b>input model: </b>rca-in , bluetooth v4.0 aptx</p> <p><b> amplifier output:</b> 8ohm 18wx2 , 4ohm 30wx2</p> <p><b>tube model: </b>6n3 ( can be replace as 6h3n, 5670 )</p> <p><b>power amp model:</b> d1875 x 2</p> <p><b>snr: </b>87db</p> <p><b>frequency response: </b>22hz-17khz</p> <p><b>input impedance: </b>47k ohm</p> <p><b>input sensitivity: </b>300ma</p> <p><b>output voltage: </b>100-120v 60hz</p> <p><b>headphone output: </b></p> <p> 32ohm 0.66v~140mw </p> <p> 64ohm 1.2v~230mw</p> <p> 150ohm 2.4v~380mw</p> <p> 300ohm 3.8v ~480mw </p> <p><br></p> <p></p> <p><b>package included: </b></p> <p>amplifier unit, power cord, line-in cable, 6n3 tube, 6.5mm to 3.5mm earphone jack converter, user manual</p> <p><br></p> <p><b>features:</b></p> <p><b><i>built-in v4.0 aptx bluetooth</i></b></p> <p>tube stereo amplifier is compatible with all bluetooth enabled devices. this bluetooth can minimize the audio and video delay and output music wirelessly within a range of 33 feet. </p> <p></p> <p><b><i>class ab amplifier</i></b></p> <p>from the point of view of efficiency ratio and fidelity, this amplifier at a reasonable price is a good choice, you can enjoy the wonderful music.</p> <p></p> <p><b><i>simple operation</i></b></p> <p>the function keys of the hybrid desktop amp are designed to operate easily. it is a perfect gift for anyone.</p> <p></p> <p><b><i>suitable for multi-places</i></b></p> <p>home /office/outdoor party/kalaok event/music restaurant</p>