Forget the AudioNote E. Way too expensive ($5000). Get the Klipsch Heresy III for less than $2K. A much better match for a SET 300B amp! Sensitivity of 99 db! I bought a pair of older Heresy's (Mk.1) to use with my SET 45 and 2A3 amps. The E's don't have high enough sensitivity to be practical for use with SET's.