Musical Fidelity - V90-AMP USB Integrated Amp Auto selection of inputs and simple, combined connections make it suitable for a wide range of input sources such as computers, streaming audio devices and more traditional sources Designed for multi room and computer based audio Advanced, prioritised automatic input selection Power: 20W /channel into 8 Ohms (Suitable for speakers 6 ohms minimum) Frequency response: +0, -3dB 10Hz to 20 kHz