Shanling - UP4

First of all thanks to headphonezone for promptly allowing me to upgrade my order from UP2 to UP4. They were very fast and accommodative and the gadget reached me on the third day.
About the device, its small and versatile. Supports a lot of codecs for listening to High-Res files. Sounds deep and crisp but smooth. Mid range is also clear. Overall experience is smooth and non fatiguing. One good thing is that it updated its firmware in OTA through Shanling app indicating that it is from a newly manufactured lot (as earlier versions do not update over OTA as gathered from the net). Now its running on V1. 3. The connectivity is fast and it can remember connections with 2 BT devices.
The app is a bit amateurish. When connected it shows a DISCONNECTED(when actually it is connected) button which should read DISCONNECT actually. BT codecs are chooseable and is only limited by the transmitting device. I used with my LG V20 and POCO F1 with LG sounding smoother and POCO with a little more shimmering highs. Enjoyed on both. Adequate power to drive my AKG K712 pro through unbalanced out.
I need to buy a balanced cable now for my detachable earphones. Planning to make a DIY one as balanced cable are costly.
Can anybody confirm the 2.5mm configuration for Shanling. What I gathered from net is R-, R+, L+, L- for TRRS pins respectively.
Regards
Partha

I bought my Shanling UP 4, my first ever AMP/DAC (with Bluetooth). I have paired it with my shiny new TinFi T2 . The sound separation is mind blowing (at least to me) for the budget. The Shanling Up 4 has ample amount of amplification for my drivers and for my needs too. It has also other fancy stuff like a 2.5 mm port for balanced output and some other things (that I have not used so far). Also the quality of the unit is very good.

I would recommend everyone, who is looking for a Dual DAC Bluetooth AMP, with incredible track separation and well balanced audio quality, in a decent budget - you can go for this.

Oh! and the shipping was very very fast, I got my unit in 2 days.

This is my first audiophile product and I'm really loving it. Tried using through various sources like Laptop, Android & I Phone and it's working great with all the devices. Sound out put is best when connected through Ldac codec mode

Kind of expensive for a first time buyer like me. Value for money in the world of DACs. Very versatile since you can use it connected to a system AND via bluetooth. Easy to use and battery's great. Finally sound quality's amazing. I use it with a pair of Shure Se215s and I love it. Hearing things in song I usually don't notice. Going to try it with a pair of ATH M50x and I'm pretty sure it'll be able to push sound out hard (especially in dual DAC mode)

Nice small well built device, supports almost every Bluetooth Codes with good signal strength. Good battery life and clean organic sound.

Simple, discreet, elegant, easy to use, easy to connect and accompanied by a great audio quality! Nothing much to reproach to the UP4. Using it is a pleasure and simplistic. The volume wheel makes the experience even more enjoyable and the choice of volume precise.
I was hesitating with the FIIO BTR5 but have no regrets getting the UP4, on the contrary. The build is solide and the listen enjoyable.
An app is also downloadable to help you tune your device. Great!