Sound Systems PAC750R Nearly New PAC770R Nearly New   PAC750R Professional Sound System (Pre-amp only) The factory-reconditioned PAC750R is identical to the PAC770R, except the 750 does not have a 110W per-channel stereo amplifier included in the 770. The PAC750R has a preamp only. The PAC750R may be paired with a more powerful amplifier if needed. PAC770R Professional Sound System The factory-reconditioned Superscope PAC770R and PAC750R (pre-amplifier only) provide a remarkably easy to use, feature-rich, and cost-effective installation solution for applications requiring music and public address. In one durable, commercial-grade product (taking up just 4U of rack space) these units combine quality system components. These all-in-one units offer: A CD player with music playback features specially designed for the performing arts A full-featured cassette recorder An elegant mixer that any novice can handle with ease A powerful and reliable amplifier (PAC770R only) No stand-alone mixer is as simple to operate as the one built into the PAC770R and PAC750R. Easy to Use Mixer  Multiple Inputs – Simultaneous independent control of 4 XLR mic/line inputs, tape, CD, and stereo aux input. Gain Control – The amount of signal each input sends to the mixer can be easily adjusted using each input’s gain control knob. Easier still, the auto gain feature will set an optimal level for the mic/line inputs. Final Output Control– Master output volume, EQ, and balance are simply controlled from the front panel, while individual mic/line EQ, panning, phantom power, and input attenuation are designed to be "set-once" on the back panel. Effect Loop – Parametric EQ and speaker processing can be looped through the unit. Voice Reduction – A voice reduction circuit can reduce the lead vocals in prerecorded music from the CD, tape and aux sources. Simplified Auto Ducking – For paging applications, the unit can be set to automatically lower the volume of music when any mic/line input is active, either eliminating levels or reducing them by -15dB.With Amplifier (PAC770R) or Preamp Only (PAC750R)  The PAC750R is built with a preamplifier only, enabling flexible installation. The PAC770R, however, comes with a high performance amplifier. It includes:  Stereo or Mono Bridge Modes – The unit allows stereo or monaural amplification.Power Protection Circuit– The amplifier is designed to protect itself from running at levels that can cause damage. CD Player Innovative features for controlling music playback built into the CD player.  Plays CD-RW – The built-in CD player is among the first that can play finalized CD-RW discs.  Tempo Control – Playing speed can be adjusted from -33% to +50% without changing the key. This is done in 50 intervals (1% from previous tempo setting).  Key Control – The key of a CD can be altered by ±1 octave, in 1/16th note increments, without changing tempo. A-B Loop – Audio loops can be defined within a CD track utilizing the A-B button. Program Play – A selection of tracks or a single track can be programmed for custom playback.  Single Track Play – Automatically cues tracks to audio and after playing, cues up the next track. Cassette Recorder  Loaded with professional features, the tape deck provides exceptional versatility along with reliable operation.  Quick Auto Reverse – Optical sensing of leader tape will reverse the direction of tape transport, for seamless double-sided recording.  Pitch Control – Playback pitch (tempo + key) can be adjusted from -12% to +12%.  Auto Record Level Control – The unit can automatically set the optimal record level for worry-free recording. 1 year parts & labor warranty.