Please Help Weed Them Out

OK, so I got a set of AKG K371. I like them a lot, and only $160 from Amazon! I originally got a set of Hihiman HE-R9, but I thought they were too dull sounding and very bulky. These AKG' are great, and I just ordered a set of Dekoni Choice Leather pads to try. I'm actually considering stepping up my game here. What headphones would anyone recommend with a similar sound signature, but way better? By way better I mean in the $1,500 to $2,500 range.

Would open-backed models be a possibility or do you need closed?

I do need a high isolation rig, as I usually have to play headphones while others are watching TV. Even with closed backs I can still hear the TV at quieter spots on most tracks. It's not an absolute, but preferred.

Got it and thanks for the good info.  Unfortunately as an open-back guy I got nuthin’ of use for you, but I think you’re gonna be thrilled moving up to the $1500 - $2500 price range as the improvements from the sub $500 range are huge — it certainly was for me.  I actually think your new price range is the sweet spot in headphones as they’re light years above the budget ‘phones yet provide a lot of the performance/refinement of the much pricier models.  Best of luck in your very worthwhile upward trek!

@koestner

The next step up would be the DCA Stealth. MSRP is $4k. Used ones can be had from $2800 to $3200. Very similar sounding from the midrange to treble. Somewhat less response in the bass region but the clarity is unmatched. It definitely requires some power to push the volume but the HPA4 should be able to handle it.

The AKG K371 and the DCA Stealth are tuned to the Harman target frequency response curve. If you like what you hear, try to find other headphones that measure similarly.