I've been looking for my office a small amplifier to which I can connect my Apple laptop and my Windows PC and an Apple Airport Express, which might best digital. I've found him somewhat cheaper elsewhere. (The CD player PD-501 will follow next week.) Now the laptop depends on it via USB and the PC via coaxial cable (digital). And both sound wonderful. A little bass-heavy as my purely equipped with analog inputs Chinese YS LM3886 audio / Gain Clone of Alibaba, but also a little clearer sound my hand resurrected Canton Karat 930. More HiFi I do not need. (Be sure to install Before starting on the computers connected via USB the drivers of TEAC, otherwise disappears within some minutes after Bitmüll.)