I am thinking of adding a CLR Speech speaker unit to my (stationary in home) FT-857D. I have no really objectionable noise per se but am wondering whether the CLRspeech unit will add another level of "background" noise reduction. The DSP selections on the radio actually do a nice job but I am wondering if noise (low level background hiss) reduction at the AF level would help...or make things worse. Has anyone used the CLRspeech with the 857 and if so, how'd you like it...or should I ask Santa for something else and not waste $200 of his money? Thanks for experiences!