I'm usually a huge supporter of upper end Philips gear. I think they are a great company that have produced some great things - I have on of their 4 grand 21:9 tv's hanging on my wall - I'm not a Philips basher.
But these headphones are unbelieveably bad. Think: truly awful - then make them worse and your probably not even close to how bad they sound.
Nicely built, great range, awful grainy, siblant horrible dirty sound. Outperformed by a set of £30 wired Sennheisers.
after buying them, I boxed them up and put them in a cupboard. I recently took them out and tried again - nope, every bit as bad as I remembered. It's rare to encounter a product that ruins your pleasure of music, but these really are that bad. Add in the fact that they cost the best part of a couple of hundred quid and it just adds insult to their siblance and grain.
They are dismal when fed a digital signal and using their internal DAC to create sound. Perhaps marginally better when fed from the analogues of my TDA1541 crown dac.