Dont buy it if you have the TEAC HD music player app.

The application looks, acts, and sounds like the TEAC application. It has the same quirks also. High definition PCM files work. I use aiff and alac files with no trouble through an external desktop DAC, TEAC UD-301, and a portable USB headphone amp, Audioengine D3. Both use the Apple camera connector and a powered USB hub.

This is an iPhone only application so it does not work as well on an iPad. It will not reorient itself to match your screens position. This is cumbersome if you are trying to use your iPad in landscape and you are using the Lightning port to feed an external DAC or amplifier. It does have a landscape mode but it shows the equalizer.

It will play DSD files if your DAC supports them but be careful about how your DAC plays them. My DAC does play them using DoP or it can play DSD music converted to PCM. Be careful with how you set up playing DSD files in the applications preferences.

The application will not stream music files. Try the application FileBrowser (paid, full version). You can stream HD music files from a server or from a WiFi drive. FileBrowser does not play DSD files but HD is sent to your external DAC at the proper sample rate.

This app is worth the price since it plays HD and DSD music to your external DAC and headphone amplifier. The bad part is that you need a large machine to hold the music files within the app.

My last warning is to repeat what I said earlier. It is identical to the TEAC HD music player. Dont buy both.

ePubonOS/x about Onkyo HF Player - Hi-Res Music, v2.2.0