First of all, I want to say thankyou mrwalkman for these awesome custom fw. After 6 years my journey of portable audio, finally end up searching for an affordable small DAP that has a good battery life with LDAC reciever capabilities, walkman series caught my attention here. I've tried couple DAP and Bluetooth Receiver such as Fiio BTR5, Hiby R3 Saber, Oriolus BT reciever, Shanling M0, etc.. None of them satisfied my ear in terms of the sound or battery life, mostly doest last long as LDAC reciever and sound degradation really bad. At first i never looked at Sony DAP as they tend to sound warm and muddy at stock fw, till last month i brought cheap used A35 series that comes with R Firmware, wow.. An amazing sounding DAP, crystal crisp and good dynamic+resolution, even as LDAC reciever it perform very good, nearly no difference as wired connection. Finally a versatile little DAP with excellent battery life. Last week, i sold the A35 and brought the brand new A55 instead. Walkman One fw was the best so far. My setting: Bright, Alternate DAC, Plus V2. I Made custom case for it, and it looked dope
all functional side buttons, and fully protected case.