Imo, dont worry about the kemper part of it. Just look for headphones that sound good to you with music and are comfortable to wear for long periods. The sky is the limit of you want to go crazy and empty your wallet, but for fair money I like these ones (have owned a far few headphones doing home recording/mixng etc and these are my faves that sound good for both how I use them and for general music listening),
Budget: AKG K240 $69 (semi open back - kept as a spare pair. I really like them all round)
Mid: Sennheiser HD 280 Pro $100 - closed back - used for singers to wear while tracking. Sound good and have great isolation (no mic bleed for recording or annoying of others if used elsewhere) but for me atleast, not the most comfortable to wear for long periods (as in 2+ hrs)
Keepers: Sennheiser HD 650 $320 - open back. What I use every day when not using traditional monitors. Super comfortable, really good all round audio balance and not fatiguing on the eardrums with extended sessions
Live, band practice and travel: 64 Auido A6 inears. $1300 - bought these as I play in a band that are all on IEMs. Sound fantastic, and are crazy comfortable as they are custom molds and save my hearing when near a drummer... but damn they be speeeendy!
For listening to music or jamming on the Kemper, I'm happy to grab whatever pair of the above is closest most of the time.
Hope it helps!