Value As a Walkman, this made it to the mainstream press – something the overpriced Astell & Kern devices will never manage. Pricing was typically mentioned as a con. However, when you compare this to Astell & Kern devices, it represents good value, especially outside the EU, where prices tend be higher. There are also several other competitors on the market now. I've tried the FiiO X7 for a couple and found it disappointing, especially the battery, and it restarted several times for no obvious reason.    Audio Quality Clean, with great detail...