Yeah, I am aware I'll definitely need to get a good dac/amp, (would a DFR suffice, is what I'm thinking). In US, seeing HD650 go for 315 USD, so total 515 USD including DFR. Only thing, is don't have the budget right now :/ (so either wait for drop, and get lucky in getting HD650 sub-250 (even used - like new would do) plus opt for DFB instead, so total 320-350 USD, which I can definitely accommodate. Will wait and see. Will send you PM
Thanks, mate. With HD 650 definitely not I'm aware it is technically much better, but read in some threads where people were saying that 598 was a more preferable sound signature for them compared to HD600 or 650. To be honest, I don't have that much idea about my preferences, to know for sure just by reading the reviews, whether it would suit me or not. Only after trying, I am able to determine. Some earphones, which were considered to be relatively quite bass-heavy I have liked, but others I've had serious issues with.
DFB is certainly not enough for HD650, I had one and even with full volume I was left wanting. I would suggest a desktop DAC/AMP combo like modi/magni atleast. You can get something in 100-150$ range in For sale section.