YAMAHA SPX90 Click Here for the users manual
Midi control and storable effects patches.
Reverb, delay, echo, vibrato, panning, compression, gates and eq are among the very usable effects in this very popular in its day multi effects unit.
At this bargain price, this is a handy addition to your live set-up.
I heard that using one of the backward reverbs on this unit makes Metal/Rock guitars come alive!
Listen to a Few SPX 90 Sounds