Solid audio amp. I used it on my first three 1up conversions and it worked well. I tried the cheaper audio amp for my fourth conversion (ArcadeSD Jamma) and found it was finicky and would cycle power if the volume was turned up to a reasonable volume. Replaced the audio amp in the conversion with this one, and it works across the full range. Spend the extra few dollars and go with this amp. No surprises and solid performance, regardless of which platform you use in your conversion.
The 180 watts definitely provides enough power for my cab speakers!