This is the answer to PM:
Originally Posted by antonyfirst
Hi Kostalex. I find your earphones review very interesting. I'd like to know some things more the ATH CM700. At first, do they need to be amped, like the Pk1?
I'd like to know how good they become with equalizer. I have a player very good at equalizing (its "Rock" preset brought LIFE to the thinny sounding Etymotic ER4S), and I'm curious to know if they can sound as good, or betterm, than the Yuin Pk1. I've seen also that you compared the CM700 to the Etymotic ER6i, but then... if I already have the ER4P, would the CM700 be a step back? Also, can you compare the Pk1 to properly amped (or equalized) ER4S?
Finally: how good do the Pk2 become with the 75 Ohm adapter? How do they would sound compared to the Pk1 and CM700?
Thanks for answering this huge list of questions
CM700 doesn't need to be amped, plays loud from iPod, while it benefits with amping. Using EQ, you may make it much warmer or correct its sounds otherwise. CM700 is quite versatile, nevertheless, there is no chance it will sound same to PK1:
- PK1 is warmer, CM700 bass is deeper.
- PK1 is smoother, CM700 is overdetailed to me.
- CM700 soundstage is wider
- PK1 mids are more natural
- I prefer PK1, my gf CM700
CM700 is couple of steps back from ER4P in terms of overall SQ, especially accuracy, smoothess and proper details. CM700 is couple of steps ahead in terms of soundstage and comfort.
RE: PK1 to ER4S. I've read your comparison of E500 to ER4P/S and I agree with it completely! I also prefer equalized (warmed-up) ER4P to E500. So, there are good news for you - PK1 exactly holds this sweet point between E500's warmth and lushness and ER4P's accuracy and clarity.
PK2 with 75 Ohm adapter benefits a little bit, but sounds too quiet. It is much better to add amp also. In this combo PK2 plays very good, like low-fi big can, reminds me SR80 with comfies. Nevertheless, PK1 or CM700 sounds even better with amp. Also note that PK2+75Ohm+amp < PK1 or CM700 unamped.
Thank you for interesting questions, Tony! I had a good time finding the answers