Acoustic Split Saddle Pickup System, with APA-2 preamp & Ultrajak. The EMG-AS93U-L is the most natural sounding split saddle transducer system in the world. EMG was the first to produce a piezo film pickup and has received two patents for our designs. Included with each system is our EMG-APA-2 preamp. This is a miniature preamp/battery holder unit that is easily mounted to the neck block using a 3M dual-lok fastener. It incorporates a FET input for low noise and a very high input impedance (20 megohms) so you can finally get every ounce of tone your guitar is capable of producing. The low output impedance (2k ohms) allows you to plug into a guitar amp, mixing board, even directly into a tape/digital recorder with the same fabulous results. The most amazing aspect of this technology is that the pickup is virtually invisible. The natural tone of the guitar is amplified without added overtones or coloration. What you play is what you hear: highs with a natural brilliance and a low end that's full and rich. The total result is a pickup system for acoustic guitar that sounds as alive through a combo amp or mixing board as it does acoustically. Package Includes: Ultrajak with cable, APA-2 preamp, input plug, cable keepers, battery holder, allen wrench (.062 inch), attachment screws, and velcro.