I like a mid forward sound and I adore my 6XX (modded, pad swapped and on tubes) for their capabilities so it's no wonder that the Zeros were disappointing to me.

But I gotta say, the Harman tuning is very solid. On for example EQ'd KZ ZS10 pros it was absolutely terrible to listen to them with the target. Sounded like a tin can.

So in their budget they're good, but not what I want and their technical performance is not enough for me.