Late to
@Whitigir AMP8 mod party but finally adopted them (all, except for TDK Sheet). These are done with the assistance of paid technician (zero confidence with my own soldering skills).
I like what I'm hearing, the AMP8
w. To me, it really does tightens up the bass and details have more presence yet never harsh. Subjectively (and based on memory, as I could no longer compare side by side now the AMP8 is modded), the bass presentation of AMP8
w is where I experience more changes - solid and tight control.
I've placed order for the TDK Sheet. This I will try to apply on my own and hope it will be yield perceptible changes too (hopefully changes that are more pleasing to my ears).