found the link from older posts ...
http://www.dx.com/p/12au7-6n11-valve-tube-hifi-headphone-preamp-preamplifier-amplifier-black-423163#.WEAPaLJ97cc
Do the members think it could be worth a try - for iphone and laptop use?
http://www.dx.com/p/12au7-6n11-valve-tube-hifi-headphone-preamp-preamplifier-amplifier-black-423163#.WEAPaLJ97cc
Do the members think it could be worth a try - for iphone and laptop use?