The MEINL Pickup Cajons are equipped with the DST pickup microphone and the A1.2 preamp system with volume control from B-Band . This active system includes a specially designed preamp, high quality endpin output jack and a durable battery. The structure is light in mass adding very little weight to the instrument. The sound reproduction is amazingly pure and clear. This installed microphone system provides comfortable and easy handling in live situations. Plug in and play.