Units of this type have been in wide use for many years to provide precise and automatic control of peak signal levels in recording studios, disc mastering facilities, broadcast stations and sound reinforcement applications. Operation of the MC77 Limiting Amplifier should be very familiar to many who have used similar devices in the past.

NEW Features:

• True Bypass with front panel switch
• New Stereo Link with front panel switch
• Sidechain insert loop - key input, with front panel switch
• Buffered VU meter switchable to monitor input or ouput level at +4dBu
• LED Meter lights
• Heavy Gauge Black Painted Steel Enclosure

Features:

· Discrete Transistor Electronics
· Transformer Balanced XLR Inputs and Outputs
· Zener Shunt Regulated Power Supply
· Single Element Class A Output Amplifier
· Compression Ratios 4:1, 8:1, 12:1 and 20:1
· Fast Attack Time 20 microseconds to 800 microseconds
· Release Time 50 milliseconds to 1.1 second
· Gain 45dB (full gain with no limiting)
· VU Meter for output level and gain reduction indication
· Built In Stereo Interconnect with offset adjustment
· Heavy Gauge Stainless Steel Enclosure
· Purple Anodized Aluminum Front Panel
· 120/240 volt operation
· 3 Year Warranty*

*Purple Audio will service and repair the unit free of charge for three years from the date it leaves us. We track warranty by serial number so there has to be a serial number tag on the unit. This a transferable warranty and covers the whole unit except for the battery (used for stereo offset) and meter lamps. We will not repair damage that results from misuse, abuse or neglect. We do not guarantee that the purple color of every unit will match the purple of every other unit.

Why buy the Purple one? Check out the MC76 Improvements to find out what Purple Audio did in creating the MC76 to give you more value for your money (over other brands with a Black Face).

· Stronger build for road-worthiness
Yes - Purple has been known to throw MC-76's or rack them in road cases and drop them off loading docks to test how much abuse they can take and we have bent some front panels and destroyed some meters doing this but the units always worked post- throw or almost always one of the girls had a really bad day and got a little carried away on one of the test pieces ­ she eventually wrapped it around a pipe there are limits if you bend your unit up trying to reproduce these tests Purple will NOT replace the bent parts and busted meter for free
· Heavy Gauge Stainless Steel Case
Purple Audio went with the new material mostly for strength but quite commonly we see rusted chassis in the original units and the stainless won't do that
· Torroidal Power Transformer for lower field emission and induced noise XLR I/O Connects for easy signal interface ­we have always hated barrier strips and have added XLR's to plenty of the original units, they're even pin 2 hot. IEC Power Inlet for easy power interface make changing cable length and type much easier
· Built in Stereo Adapter - ­we saw no reason to make users pay extra for the stereo adapter and since it is built in to every MC-76 you can gang multiple units together for multi-channel buss limiting
· Sealed Multi-Turn Internal Calibration Pots were changed from open single turn types to sealed multi turn types so FET Bias, Meter Null and Distortion Null calibrations are easier to set and tend not to drift
· Audio & Chassis Grounds are on separate lugs for easy integration no matter what your system ground scheme is
· Relocation of Output Transformer from main circuit board to case We've seen many vintage 1176/1176LN's come in that fell or were dropped - many of these had cracked or broken circuit boards from an output transformer that kept going when the box and circuit board ceased moving Improved Heat Sinks on the stud mounted zener diode shunt voltage regulator and T0-5 2N3053 output transistor We've seen quite a number of units with burn marks around this part so we added a 1/4" thick 1/2" wide steel heat sink so the zener runs cooler and is more stable and the single element Class A output gets hot and expires in older units without this heat sink
· Double Sided Printed Circuit Board with Ground Plane for lower noise
· Circuit Board Stiffener to reduce board flex and consequent damage
· 1% Metal Film Resistors for tighter tolerances and consistent sound
· Panasonic HFS Low-Impedance 105°C Capacitors in the audio path between amplifiers are far superior electrolytic capacitors for audio than those originally used in the vintage units
· Panasonic Snap Mount TSNH Long Life 105°C Capacitors for power supply filtering have a great mechanical connection to the PCB and have a lower impedance than those originally used in the vintage units
· Bridge Rectifier RF Filter Caps for improved noise performance Local power supply decoupling around every amplifier for improved damping and overshoot reduction
· True ANSI Specification VU Meter is better damped and gives much more information about what is going on in level and gain reduction monitoring ­ this meter is also more robust than those used in the original units so it was well worth the added cost
· Improved VU Meter Illumination made standard on MC-76's