When Apple removed the headphone jack from their newer phones other phone manufacturers began to follow suit. It ushered a new era of how we listened to music today by using Spotify/Tidal/Apple ect. as our primary music provider. For some it was a convenient change. No longer did you have to dedicate precious storage space for music and you had almost complete access to a massive library of music from around the world at your fingertips.Sony's a306 Walkman feels like a product made in a era where it shouldn't exist and yet its one of my favorite devices that I take with me almost everywhere. It's small pocketable form factor makes it easy to tuck away in your pocket during a workout or jog session. The device also feels solid and well put together and It also doubles as a USB DAC making other devices sound quality way better if you're into that type of thing. The device also supports all major music files like MP3, AAC, FLAC, ALAC, WAV and MQA(lmao) just to name a few off the top of my head.The a306 does have a few issues. If you have US firmware your device will sometimes nag you for having your music too loud and will lower the volume once but after shooing the notification away your free to crank your music back up to 11 but every once in a while the notification returns making this safety feature a headache for most. The device also has difficulties driving larger power hungry over ear headphones but if you use IEMs or Bluetooth headphones you should be fine. There's also a search bar widget that cannot be removed from the device's home page but because the device is an android device you do have access to the Google Play Store and I was able to change the launcher that allowed me to swap the search bar with controls for the music player and the Sony Music Player software itself is just ok. It allows you to access the music files on your device but it lacks some sorting options that urks me wrong (The software sorts albums alphabetically while I would perfer that albums be sorted by Release Year, But still you can sort Artist by Album Artist so some thought about organization was consider I just wish they did more.) Nothing special about it imo but if it really bugs you, again you have access to the Google Play Store to find a new one to that better suits your style. Actually access to the Google Play Store gives this device a fair bit of customization that allows you to make this device truly feel yours.Now your probably wondering as to why even have this device when I can just use my phone and while sure you can just use a phone with bluetooth headphones and spotify premium for music. There are also cheaper alternatives like buying a second hand ipod and modifying them to give them more storage and customize cases that Apple never intended for their products are also a valid option for anyone looking for an MP3 player on the cheap but For someone like me who still buys music (CDs, Vinyls, Digital ect.) and have been doing so for years and wants to enjoy my music to the highest possible quality. My personal music collection is fairly large (about 8000 files and still adding more daily) and there are just some music from band that no longer exist that I have that I will never be able to listen on Spotify or elsewhere and being able to listen to them without the need to listen to commercials or having to pay 10.99 a month is a freedom I refuse to throw away. This little device makes that possible.Update 1/30/24: Having used this device for a few months now I still use it regularly and it is still my go to device for music listening to my digital files. Sony recently allowed the device to be update to Android 12 which is nice. The loud volume warning while I understand is necessary due to US law, I wish there was a way to just tick an option on the device "Yeah i know loud music will damage my ears. You dont have to remind me every week." was a thing. The last annoyance has to do with the way Sony configured its buttons for Next, Play/Pause and Rewind. I wish Sony had swap the Rewind/Next buttons to make it feel like nearly every other electronic device with physical buttons but I've gotten use to it but if Sony added an option to swap these buttons around in a menu I would change it in a heart beat.