Incredible

Ive been using this app for several weeks now almost daily and love it. Not the sleekest interface and crashes every once in a blue moon (not catastrophically, just close and reopen the app), but those factors cannot detract from a five star rating. Because the sound this app puts out is.....incredible. I paid the $10 to get the FLAC capability and dont regret a penny of it.

Using an iPhone 7 with this app straight to Shure SE215k earbuds, or out to an Oppo DAC and then to HiFiMan he-400i headphones, the sound that this app is capable of putting out is absolutely reference-quality. For the first time, I can honestly say I can use my PHONE to do some critical listening. The manual equalizer is great, the pre-installed equalizers are great. Basically, I love this app. Great job, Onkyo!

One suggestion for developers: find a way to list all music formats (FLAC and MP3) together instead of having to choose a Hi-Fi option to get to my FLAC files.

Drew_2006 about Onkyo HF Player - Hi-Res Music, v2.2.4