Speaking from experience, the HD600 scales up really well. The better the amp and DAC, the better the sound. With my pair, I toggle between a Levinson integrated and a Sony headphone/DAC amp. With good lossless source material, yowsa! For the phones themselves, you can try different pads and/or upgrade the cables to balanced. I’m not an EQ guy, but I’ve never been disappointed with these great phones. I have others as well, but I always enjoy the HD600.

They are worth every penny. A gold standard.

I own both and appreciate them both. HD600 for classical, opera and jazz. Sony for everything else!

Ah, not even close. The HD600 is a professional industry standard. Not true of Senny’s cheaper consumer phones. HD600s scale up on good amps like nobody’s business. Also not true with Senny’s consumer models.