Today I received a balanced cable for my HD599. It shines with my A & K SR25, truly excellent sound. The volume is of course a lot louder but, to my ears it also sounds better than the 3.5
The HD 560S is the new reference level headphone from the German giants Sennheiser, it is more neutral sounding than the legendary HD 650. And it costs less than half of that Very easy to power & drive too, impedance of 120 ohms & a sensitivity of 110 dB.
Sennheiser HD 560S Over-Ear Headphones
The open back HD 599 delivers impressively natural spatial performance. Topping Sennheiser's 500 series, the full sized premium headphone offers near-audiophile levels of sound quality and exceptional wearing comfort thanks to the large ear cups and soft replaceable ear pads.
Sennheiser HD 599 Around-Ear Headphones
Sennheiser HD 800S Reference Headphone
Sennheiser HD 599 SE Review: Killer Open-Back Headphones on a Budget
Sennheiser HD 599 Review
Sennheiser HD 599 review - SoundGuys
Sennheiser HD 599 Review
Sennheiser HD 599 Review
Sennheiser HD 599 Open-Back Headphones Ivory/Brown
Sennheiser HD 599 review - SoundGuys
Sennheiser HD 599 SE Review - Decent Headphones But..
Sennheiser HD 599 Review
Sennheiser Consumer Audio HD 599 SE Around Ear Open Back Headphone - Black : Electronics