I have reinstall firmware, reset to default settings and unfortunately it does not help.
I set up Custom EQ as follows:
31, 62,125,4k,8k,16k to max (6db)
250, 2k to 5db
500, 1k to 4db
so it is a little "v"
When i play music and switch between Custom EQ and EQ OFF i hear change in sound on fw2.20, but when i set same Custom EQ on fw2.36 and switch between Custom EQ and EQ OFF there is no change in sound like in fw2.20.
In fw2.20 sound on Custom EQ became more "clear" compare to EQ OFF, in fw2.36 there is no difference.
In fact this Custom EQ does not increase treble, just decrease mids so treble and bass sounds better.
Am I right that Custom EQ should has scale from 0 to -12db :
Can You try do this experiment with both fw (2.20 vs. 2.36) same EQ settings and share your opinion.
[Mod Edit]: Problem parsing the X1 link - link removed.