http://www.hometheaterfocus.com/blogs/blog/archive/2006/06/29/100554.aspxThe acoustic quality of digital audio players is a controversial topic on the best of days, but so are the merits of tube amplifiers. Some old school audiophiles swear by them claiming tubes provide warmer, richer sounds than a transistorized amplifier.enCommunityServer 2.1 SP2 (Build: 61129.2)