Whoops just opened the sites today. Been a while since I've first bought Pandora, the bass becomes tighter and sounded better for me. i like the impact, fullness and decay. Its kinda hard to choose between th600 and pandora. Both are good headphones with their own signature.
I love the vocals in my pandora. its so intimate and full of emotions, one of the best vocals i've ever listened to. The micro details are just amazing. i love the bass impact I don't know but for me it is somewhat tighter and more precise compared to TH600? (maybe i;m just wrong). Although for me the presentation and the soundstage feel is unusual. But i kinda understand since its FAD products. My only concern is the comfort, its really hard to get the "fit" which kinda annoying. if not fitted properly my ear hurts after 30 minutes of usage.
Still overall performance of TH600 is hard to beat. I like the wideness of the sound stage. kinda feel more refined and laid back and better all rounder. I like th600's sub bass better though. TH600 by no any means is inferior to pandora in terms of bass, its hard to say and explain. maybe its a different "goodness" ? I feel like the bass and sub bass in TH600 gives more refined and pleasant feeling. TH600 is also more comfortable (obvious since it is one of the most comfortable headphones i've ever tried).
I have to say the most amazing thing is how i keep missing and searching for Pandora's vocal when i listened to my TH600. the sweetness and the intimate feeling is hard to beat. Honestly for the past few weeks I use Pandora more often compared to TH600. But maybe its because it is a new toy for me :D.
I use Pandora mainly to listen to K-Pop, Pop, and J-Pop. Mostly Hikaru Utada's song and the vocal just too amazing. (Mostly 320 kbps, some ALACs)