acquired from a Hollywood studio free shipping with FEDEX ground The Model 4x4 is a compact, four-channel audio buffer/mixer/distribution amplifier. Any of four inputs can be assigned to any (or all) of the four outputs. Internal jumpers are used to configure the unit, thus affording complete flexibility with security from unauthorized tampering. The 4x4 is intended for use in mobile or fixed- installation applications in sound reinforcement, broadcast or recording, and in other audio sys- tems requiring high-quality performance, flexible audio routing and combining, and adjustable level matching. Front panel gain trimmers provide 15 dB of gain adjustment that may be assigned to the inputs or outputs. RF suppression circuitry safeguards against radio-frequency interference. Input and output stages are electronically balanced and fit- ted with standard 3-pin, XLR-type connectors. The model 4x4T is supplied with output trans- formers. For enhanced flexibility, each output driver can be set for balanced or unbalanced op- eration using internal jumpers. Output gain is independently adjustable over a 15 dB range, with a +26 dBu maximum output level into a 600 ohm or higher impedance load, and an overall frequency response of 20 Hz to 20 kHz , +0, -0.3 dB. Designed to satisfy exacting professional stan- dards, the 4x4 offers excellent performance in a highly dependable package. Its impressive audio specifications are ideally suited to recording and broadcast applications; yet its rugged 1U rack- mount chassis, coupled with exceptional immu- nity to environmental stress, also makes it an ideal choice for demanding road work and commer- cial installations.