The Questyle Audio R100 and R200 Wireless Amplifiers are actually an integration of wireless receiver, DAC and amplifier. The Questyle Audio R100 Wireless Amplifier is a 50W per channel stereo amplifier. The Questyle Audio R100 feature modified Danish ICEpower Class D amplification modules with an ultra-low distortion of 0.004%, and a Signal to Noise Ratio of 104db, as well as the legendary Wolfson DAC chip to ensure the highest sound performance possible. R100 Wireless Stereo Amplifier Output Power： 2*50W reated@4ohm Frequency Response：≤60kHz, +0,-3dB SNR： >100dB THD+N： <0.01% Power Supply：110V/220V switchable Dimension： 240*130*44mm