dollarbill: THANX for the info! none of my sacd discs have high freqs into the lfe answered my 1st question.

kcb: i am sure the cirrus chipset includes digital crossovers (lex, kenwood, marantz, rotel use it). i just found it odd that the crossover info is listed in the preamp analog section of the specs page. and, nothing in the specs about the 80hz 'analog' filters. i appreciate your help.
"Time wounds all heels." John Lennon