Considering upgrading my present preamp (ACT-3). What features should I expect in a new/replacement preamp? Here are few things that come to mind... 7.1 surround DTS-ES DD P/L2 Component switching 8 channel direct inputs (for heaven knows what in the future) 24 bit DAC's What else? I'm thinking in the $2k to $3k range. Any suggestions? Thanks!