It's best you get acquainted with one for at least a week, then use the other. Hot swapping isn't really helpful unless the headphones are similar in tonal balance, and you've been well acquainted with both.
Swapping from say a Mad Dog to a Pro 900, or HD650 vs DT990 wouldn't be good whatsoever. When frequency response is quite different, you will find one to be awful if you were used to the other. I.e. If using a dark headphone for a long period and switching to a bright headphone, the bright headphone will sound like pure treble death. If vice-versa, the dark one will sound awfully slow and muddy.
The best you can get in such extreme circumstances is soundstage and positional cues, IMHO.
Thanks, yeah it makes sense to have for one week the new headphones.
Is this how you do with all the headphones that you have tested in youre guide?
I will be getting K601 to have as reference for future headphones (if needed).
My current(and only ever had) headphones are Sennheiser HD212pro, I have had them very long maybe 7-10years.
They are closed and are considered to be bass & "fun" friendly according these reviews
Ive read they have good positional direction for gaming considered they are closed, my guess is that the K601 propably is better.
The K601 are supposed to be on the low side when it comes to bass, they are open headphones, analytical(?), Ive read one member write they have similar sound to Q701, some say it is quality wise slightly below or equal to K701.
Price wise here in Sweden it is much lower compared to K701/Q701 so it logicaly should be not as good but regardless I'm hoping to be satisfied with them :)
Basicaly the K701 is 50% more expensive then K601, then the Q701 is 100% more expensive then K601, and lastly K702annie is 100% more expensive then Q701 so the Annie is 4 times as expensive as K601