I've been using this European/Asian amp board (With a 110 to 220 volt 500 watt autoformer from Amazon - 30 bucks) for a couple months now and nothing can touch it, IMHO. It uses the infineon MA5332MS 200 watt p.c. digital amp chip running in bipolar (+/-) power supply mode. This means the - speaker outputs sit at GROUND. Also it only needs one output filter per channel (Less speaker load interaction). The audio only goes through one half of an NJM 4580 opamp per channel and has decent gain. The power chip is heat sinked to the chassis below the circuit board. The sound is sublime no matter what its input level is. Its dynamics are outstanding. The stereo image is wide and deep. It replaced a pair of Fosi V3 monos and sounds a lot better than they do. Right now my DAC is a WiiM pro plus and I'm hoping that when my new Fosi ZD3 DAC arrives it will sound even better. It's also available at audiophonics.fr
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