I was using a Beresford Caiman DAC. Certainly a good DAC for the money, but this is a different league Arcam DAC indeed! I am using it with an 8 m. Supra long USB 2.0 cable and a Yamaha A-S2100 amp. So I'm using to iMac, iTunes and Pure Music 2 in my setup. There is a test report in audio (de) with the result 'over outstanding' (115 points).