Dual Source Systems
Virtually all the big names in the pickup business, including Baggs, EMF, Fishman, and Highlander, offer such systems. One of the latest advances in acoustic instrument amplification uses a piezo under-saddle pickup and a mic, and blends the signals with either an on-board preamp or a stereo cable to an external mixing source. The result is a more open sound that includes more "air." This system is more susceptible to feedback because of the presence of the inbuilt microphone. Having said that, the problem is not as great for solo playing which does not generate high on stage noise.