[Elecraft] SP-3 frequency range question

[Bill]

Wayne - the receive EQ on my K3 is pure gold! It allows me to work 
around age-diminished hearing and enjoy - what is to me - full range 
hearing. Similar to how high quality hearing aids work.

I just want to hear how well they do (or don't do) in the real world - 
on various desks, etc. And, maybe with other rigs lacking EQ 
capabilities. It is all about performance - and not specification.

SP-3s will be a part of my station desk redesign project - if I choose 
them. Price is not a factor - after all, how much are they costing after 
ten or more years daily use.

Bill W2BLC K-Line