Terry,
Could you please elaborate on the "single-freqs". I am seeing some confusion on exactly what freq's the 600 has vs the 800. What freqs does the 800 have that the 600 doesn't, and/or operational differences.
Thanks!
The EQX800 can run 20 and 40kHz individually that the 600 can't. They both utilize those frequencies when running in multi-frequency mode...