"This has a noticable effect, and I would recommend the 9811 over the cheaper 9807 for this feature alone." This quote is from http://www.carreview.com/CD,Receivers/Alpine,CDA-9811/PRD_174027_2861crx.aspxI still think the eclipse 3403/3413 is your best bet for features and what not....other wise save some money and get an alpine 9807.