I just got my OTG cable, and the ODAC/O2 separates do improve the sound. Just using the O2 before with the headphone output on the stock Note 2 with the headphone amp gain mod, the SQ was a little better (notice it most with bass with my Ultrasone 780s). Then adding in the ODAC just gave everything a little more clarity and depth. I love how Green Day's Brain Stew intro can go from loud guitar chord to absolute silence in between the notes (Grado SR225i).
Edited by cel4145 - 2/16/13 at 12:27pm