UK audiophile design with bigger & beefier internals than the original PMA-255. The sound is more subtle, better focused and kicks hard, sounding like a much bigger amp. Delivers superior bass power & drive with better load handling. 30 wpc (8 ohms) 50 wpc (4 ohms) Tone controls with source direct bypass Discontinued not long ago, awarded 5 stars by What Hi-Fi. Was driving my Wharfedale Diamond 9.1's sounded fantastic... Quality amp. £60 + P&P