Found use for my iPad first gen as a dedicated music server, streaming Spotify into my stereo system.
I was very pleasantly surprised at the very good sound quality, considering I'm using the headphone out jack.
A little search on google showed that this iPad uses a very good Cirrus Logic DAC and the output impedance from the headphone out is low (ie, good). Apparently RMAA measurements are very good too.
Really enjoying Spotify through this set-up. Played James Taylor and Diana Krall. Sound is clear yet not thin or digital sounding at all. I daresay that it compares very well with vinyl playback on my Technics SL1200 with Rega Exact cartridge played through the same system.
What a treat!
LSA Standard Integrated amp with NOS Tesla 6922 tubes
LSA 2 Towers connected via Rega speaker cables