Thinking of either Z9 or Pioneer AX10Ais. Yam LFE crossover goes down to 40Hz, which is important for me as my KEF Ref 3's go down to 36HZ, but on line info only says it can bi wire fronts. Pio LFE lowest crossover is 50Hz so would compromise full range ability of fronts but can bi amp. Can the Z9 bi amp? If not should I be concerned by the Pio LFE issue? Budget is £3k max. Are there any others I should audition? Many thanks folks.