They're on the same quality tier, all you'd change is the sound signature ^_^

I had HD598 before. It was very good, warmer sound. Slightly more bass than K702, but by no means bassy.

But I like the vocal of K702, especailly female singer’s voice. Personally, I still chose to go with K702. But HD598 is very good too. I can even see myself buying a pair of HD598 when the price is right.

HD598
1. Discounted more often, and can be bought very cheaply sometimes.
2. has detachable cable, 2.5mm to 3.5mm, cheaper cable.
3. More comfortable to wear. I found K702 comfortable due to its large earcups. There are people who do not like the headband and feel uncomfortable. HD598 has large earcups and more comfortable headband.
3. In my opinion, HD598’s sound is likely to please a wider range of people compare to K701/702.

price, removable cable

And color...

Same drivers. Slightly modified versions of each other.

Even the K712 pro uses the same drivers but different earpads for example.

Each has been tuned slightly differently. I believe the K702 headband is different to the Q701 as well for example of another difference (with bumps and without bumps).

For most people it makes sense to buy whatever is cheapest because the differences are minimal.

Agreed.

K702 and Q701 has detachable cable, K701 is non-detachable.

Amazon has better customer services.

Any proof of that?

That's ridiculous. Is that even legal?

Surely they must provide a replacement if possible and if not then a full refund.
Thats some shady ebuyer like practice right there.

Don't reply ? Why ? You already know? The bass is fast deep and tuneful, but not very present. Overall a bright headphone that is superb for Jazz and Classical, especially strings. Huge soundsatge. Not good for Rock or if you like some slam to your bass. Owned a pair for years and can't believe they're this cheap. Heat added for spotting the deal.