Those are both good choices. Another popular option in the same class is the Sennheiser HD600, for a smoother, less fatiguing sound. I'd also suggest the Audio Technica AD-900x. All of these are clean, balanced headphones with different presentations. Do you want something slightly more sterile and neutral, more smooth, more aggressive, more fun, etc?
thank you for asking I was planning on that. I Have read reviews on both the dt880 and akg612 and have found the akg probably a better value? Those sennheisers also look very tempting because people say they have a very full sound. As far as an amp I am thinking a modi/magni combo. Do you think I will really need the modi to bring out the full potential of the headphones? I am also considering the head fiman ef2a tube amplifier.
Modi and Magni are a good place to start. If you want tubes, Id consider the Vali over the hifiman amp.
The AKG is definitely cheaper than the DT880 or HD600. Are you sensitive to treble? The basic tradeoff is that brighter headphones can sound more exciting but also give a headache. Warmer or smoother headphones are easy to listen to but can sound more boring. It boils down to preference.
I bought the magni/ modi. What music programs are used to get high quality files? is itunes considered a good candidate? also do I have to buy an adapter to run the magni/modi from my desktop computer?
You download the files as is, or each site has its own download manager, then playback is handled by a dedicated player. For example www.hdtracks.com sells everything from 16/44.1 FLAC to DSD, depending on what formats each album they have is available in; I use their download manager, then when it's done I copy the file to a back-up drive and to the folder used by MediaMonkey where I check file tags (and for those with certain restrictions on their players, the album art resolution) and then copy it to the microSD card I use in my phone.
Unless your Modi is like the photo above and your motherboard has a corresponding Sony/Philips Digital Interface Format port and you'd rather try that. It requires no drivers but you'd have to set it on the sound device options.
I got the magni and modi and my computer doesn't recognize the usb. I believe I have it hooked up correctly. both units are on and the rca cables are hooked up correctly. It just keeps playing the music through the computer speakers on itunes .What am I doing wrong?