Today, I've been listening to my LZ A4 IEMs connected to my Cayin N3, using an Impact Audio Cables 3.5mm TRS Plug -to- 2.5mm TRRS Jack Adapter, and an Impact Audio Cables 2.5mm TRRS -to- MMCX cable.
My N3 mostly has FLAC rips of my CDs, and I've been listening to the acoustic music of
Owain Phyfe & The New World Renaissance Band [
https://www.youtube.com/channel/UCwl94yOHslQO9jghXP7u2EQ/videos ] and the Progressive Rock of
Iona [
https://www.youtube.com/channel/UCwTIW3nfjc3lM5vmDzIUhmQ/videos ].
I've been using the Black Backs / Gray Nozzles on my A4 for a month or so, and this morning I switched to the Red Backs. (On my Onkyo DP-X1, I have some Bass boost applied using Viper4Android, so the Bass with the Black Backs sounds right.) With the combination of Red Backs / Gray Nozzles, my music sounds good, listening to the N3. Which back / front filters are you using?