KEF Reference 1 v 107/2

I replaced KEF Reference 107/2s with Reference 1s because I was concerned about inserting the active unbalanced KUBE between an Ayre KX-5 Twenty preamp and VX-5 Twenty amp.  I had had a bad experience adding an active balanced Bryston high-pass filter between the preamp and amp, and was warned by Charles Hanson to avoid inserting active circuits between the two.  I regret I never tried the 107/2s with the Ayre gear.  A balanced passive Marchand high-pass filter does no harm.