Next time I drop by my dealer, I’ll bring a set of headphones and listen to a Luxman. But my experience with several other… and more expensive integrated amps has been their headphone section is very poor quality. They have apparently been thrown in to have one. Maybe Luxman is different… but I doubt it.
I have owned well over a dozen headphone amps varying from a couple hundred bucks with four over $1,000, in pursuit of great sound. Once I found Woo headphone amps, I have never considered anything else. Incredibly natural… and some very powerful like my WA-5 that can power speakers if you want. This will take control of any headphones and get the most out of them.
Best thing. Go try a good headphone amp. They can be a real revelation.