I just bought portable E07K from Fiio. IT is DAC and amp. Previously I made an amp for my brother using full discrete circuitry with whole bunch of output transistors and two double FET input pairs plus DC servo. I even simulated whole circuit in Pspice.
http://headwize.com/?page_id=79
This time I had no energy to build it again. I used to have Sennheiser 580 but now I bough AKG k271 mkII. Sound is still a little on the bright/rough side but it requires time.
I tried MP3s before and concluded that AAC is way better. MP3 has also better and worse encoders. Lame MP3 used to be a very good one but it was many years ago.
I don't expect miracles but so far E07K sound is very good. I have JVC K2HD record Wei-Li "Red Ciff Capriccio" with Gusheng (Chinese harp) close-miked. Sound is as pure and rich as it gets and this tiny amp works very well. Speakers give a little more punch at lower midrange but it might be headphones fault (I read about it). My Samsung Galaxy will drive this DAC thru USB port. I don't expect much from portable, but would like to store most of my records. So far my 64GB microSD card is almost full.
http://headwize.com/?page_id=79
This time I had no energy to build it again. I used to have Sennheiser 580 but now I bough AKG k271 mkII. Sound is still a little on the bright/rough side but it requires time.
I tried MP3s before and concluded that AAC is way better. MP3 has also better and worse encoders. Lame MP3 used to be a very good one but it was many years ago.
I don't expect miracles but so far E07K sound is very good. I have JVC K2HD record Wei-Li "Red Ciff Capriccio" with Gusheng (Chinese harp) close-miked. Sound is as pure and rich as it gets and this tiny amp works very well. Speakers give a little more punch at lower midrange but it might be headphones fault (I read about it). My Samsung Galaxy will drive this DAC thru USB port. I don't expect much from portable, but would like to store most of my records. So far my 64GB microSD card is almost full.