Sennheiser's redoubtable HD580 precision is a group of possibly 5 headphones, none of which are identical in sound to the other precision models never mind their HD600 or HD650 models. Because of silent changes the group might be the following: HD580 precision, flat plate, made in Germany, 1st version HD580 precision, flat plate, made in Ireland, 2nd version HD580 precision, raised plate, made in Ireland, 3rd version (dark driver screen) HD580 precision, raised plate, made in Ireland, 4th version (light driver screen) HD580 Jubilee The most produced...

This is a review of the Colorfly’s (C4) occasionally compared to Nationite’s (S:Flo2) Tekmod. This is my impression of the two players (without using switching/volume matching equipment) through Sennheiser HD595 headphones. I have never used either of these players as portables with IEMs and this comparison relates to only home use. I won’t compare the build quality, as the C4 is a far more expensive player than the S:Flo2 ever was. In their user interfaces both have several issues, the cheaper S:Flo2 suffers more in this respect than the C4. The C4...

The Nationite S:Flo 2 is a media player that is no longer manufactured. It is a larger memory version of Teclast’s T51 player with extra storage (on the 16GB model) and different firmware graphics but the same UI. This player has a rare dual mono architecture which mirrors rack CD players. There are two DACs and two pre-amps, one for each channel. The advantages of this are supposed to be lower noise, less distortion and better separation. However this architecture has not generally been adopted (except for the Astell & Kern AK120) and most Hi-Fi...