Topping D90 vs Gustard A22 sound test.

My source is Tidal from RPI3 whith Volumio and SBooster linear power supply, RaimondAudio power amp, Audioquest Bedrock speaker cable and Tannoy XT6 speaker with upgrades filters (Jantzen caps an coils) , Kacsa PureSiver USB cable, Van denHull D-102 III Hybrid XLR with Canon XC 10 and Rode Stereo VideoMic X : Bozzio LevinStevens - Duende and Fink - Troubles What Youre In.