The MC77 supercedes the MC76 re-engineered 1176 type FET Limiter. The MC77 recreates the audio circuitry of the revision E 1176, using modern components matched to the original.
Starting in 1997 Purple started making the MC76, an 1176 type compressor base on the D & E version units. (MC is 1100 in roman numerals) At the time the 1176 was not available from any manufacturer. Coming from the repair background it was clear a better built, more road worthy unit could be build and sold new for less than the 20+ year old units that were coming through the shop. After another manufacture brought an 1176 clone on to the market Purple introduced the MC77. The MC77 added new features that were lacking from the original. Thousands of units later Purple keeps its parts and build quality high. Using parts that will last decades. Have a look inside and see for yourself. Toroidal power transformer, the best interlocking switches on the market, conductive plastic potentiometers. Quality for longevity.
True Bypass via sealed relay with front panel switchImproved stereo linking with front panel switchSidechain insert loop or key input with front panel switchBuffered VU meter can monitor input or output level at +4dBuLED meter lights that don't burn out as incandescents doHeavy gauge black stainless steel enclosure115v/230v operation switchable from rear panel (serial# 600)Discrete Transistor Audio Path ElectronicsSingle Element Class A Output AmplifierTransformer Balanced XLR Inputs and OutputsZener Shunt Regulated Audio Power SupplyCompression Ratios - 4:1, 8:1, 12:1 and 20:1Fast Attack Time - 20 to 800 microsecondsRelease Time - 50 milliseconds to 1.1 secondGain of 45dB (full gain with no limiting)Ruggedized Design - PCB stiffener, chassis mountsPurple Anodized Aluminum Front Panel