I have a few things i would like advice on from all of you wonderful people if i may, its been a while since i posted on here but the words from people on this forum have never lead me astray before.
A bit of background, a few years ago i entered the audio scene on a budget and after some questions on here i ended up buying a pair of Sennheiser hd580's, Marantz CD63 SE and an old but very warm Marantz amp (a less than perfect match but i still love it) as well as some less note worthy floorstanders for when i have guests. I have never regretted any of these purchases and to this day i am still happy with what i have BUT i dont know what significantly better sounds like so i am looking to slowly upgrade and experience better.
I am looking for a few things, the CD player has a wonderful sound to it and i cannot put a bad word against it but i am looking to also use my computer as a source now so the first thing i am looking for us a USB Dac or similar on a reasonable budget as well a dedicated headphone amp if it is required. However that said i would also like to use my iPod as a source for other parts of my house and at work (all of my music files are in Flac, Alac or similar lossless formats).
My other consideration is upgrading my actual cans, i am looking at the likes of Grado SR325i and Senn HD650 but i cannot for the life of me decide which, i have heard both and i love both but i have not been able to hear both on my system or potential upgraded system so all opinions are welcome here.
The music i listen to is stupidly varied, i love Classical but at the same time i listen to just as much bass heavy Electro, Drum and bass or similar while the current album i am listening to is "Revelations" by Audioslave and next on my list is going to be Fleetwood Mac followed by Eric Clapton.
I apologise if this is the wrong place to post my questions.
Any recommendations would be sincerely appreciated