The SPX900 makes a great FX unit for processing guitars, individual drums (like snare), synths and as well, for vocals live (live shows/gigs).
The Yamaha SPX900 is a highly sophisticated digital reverberation and effects system which offers 50 preset effect programs inciuding accurate simulations of natural reverberation and early-reflections, delay and echo effects, gated effects, modulation effects, a versatile compressor, a harmonic exciter, multiple effects which function as several Yamaha SPX900 units in one, freeze (sampling) programs and others.
The Yamaha SPX900 is also MIDI compatible, with a MIDI in terminal that allows MIDI selection of effect programs, and a switchable MIDI THRU/OUT terminal.
When switched to OUT, edited programs stored in internal RAM can be dumped to a MIDI data recorder or other data storage device. Programs thus stored can be reloaded when necessary via the MIDI in terminal.
As an extra touch of convenience the Yamaha SPX900’s input and output terminals can be switched to match -20 dBm or +4 dBm line levels + providing compatibility with a broader range of sound equipment