Originally Posted by luisdent
I agree. I felt the mids/upper mids of the gr07 mkII to be pretty open and transparent in a sense, but then the treble has a peakiness I didn't like and the bass seemed uneven to me. It wasn't super bassy or peaky, but it was like a portion of the bass was just a bit much. But it still sounded god. I'm still looking for er4s, red filter, mid to treble, with a perfect low end to low mids...
I agree about the treble, even if you get rid of the resonance with the proper fit, it's still uneven and it also lacks extension. But the bass area on my pair is very even (tested multiple times with sweeps and tones) though a tad lifted (3-4db is my guess, which is fine for an iem due to the missing db effect). I hadn't tested my previous pair (an MKII) but i don't remember any low end unevenness either. Still, the reason i love the GR07 bass is because it's fast and detailed. If i have to chose between bass clarity or quantity i will always pick clarity, so the Rocket is an iem i will definitely get in the future. If it has better mids than the GR07, well, good for me .