The MANLEY Skipjack is a 4 into 1 or 3 into 2 RCA switcher. Use it to compare several sources or to add additional inputs into a system. It boasts a channel-to-channel separation of 116db, 22Hz-22kHz. which makes it completely transparent. There is nobody who has ever reported hearing any artifact from the SKIPJACK inserted into their system. Includes a mating "pickle" cabled remote switch, dedicated 9V DC / 2.2A external power supply, and IEC cable. Unit Dimensions: 7.75" deep x 7" wide x 2" tall. Unit weight 6 lbs. so that it doesn't go airborne with your heavy-duty audiophile cables plugged into it!