For live performances, I play soprano, alto and tenor saxophones. I use a professional sounding PA system that combined with the saxophone, sounds like a full band. I need a minimum of about 8 feet x 12 feet with one power outlet.
As a composer, I use production software, an external audio box and a midi-capable keyboard. All instrument voices (bass, piano, strings, drums, etc.) on my projects, except the saxophones, are played by me on the keyboard. Currently, I use Yamaha saxophones and Vandoren mouthpieces.