{"product_id":"purple-audio-mc77-compressor-limiter-1565-used","title":"Purple Audio MC77 Compressor \/ Limiter #1565 (Used)","description":"The \u003cb\u003ePurple Audio MC77\u003c\/b\u003e 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. \u003cbr\u003e\u003cbr\u003eOne significant component is the input attenuator. The input attenuator that was custom made for the original revisions A-F 1176 and for the Purple MC76 by Clarostat was discontinued in 2002. It was a J series T-pad attenuator with two 600Ω \"build out\" resistors to keep a constant 600Ω load on the source and primary of the input transformer. Clarostat changed carbon manufacturers and the new carbon manufacturer was unwilling or unable to make the part. Purple temporarily stopped making the MC76 to find a solution. We tried several three-deck Clarostat 70 series pots in different configurations to achieve the same loading and to match the taper. We found a solution that matched the original; both the originals and replacement parts are drawn in the schematic that you can download below. At the same time, we looked at feedback gathered from the hundreds of satisfied MC76 users. Based on that feedback, we incorporated useful new features into the revised unit, which was designated the MC77. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eNEW features in the MC77:\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eTrue Bypass via sealed relay with front panel switch\u003c\/li\u003e\n\u003cli\u003eImproved stereo linking with front panel switch\u003c\/li\u003e\n\u003cli\u003eSidechain insert loop or key input with front panel switch\u003c\/li\u003e\n\u003cli\u003eBuffered VU meter can monitor input or output level at +4dBu\u003c\/li\u003e\n\u003cli\u003eLED meter lights that don't burn out as incandescents do\u003c\/li\u003e\n\u003cli\u003eHeavy gauge black stainless steel enclosure\u003c\/li\u003e\n\u003cli\u003e115v\/230v operation switchable from rear panel (serial# 600)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003eFeatures inherited from the MC76:\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eDiscrete Transistor Audio Path Electronics\u003c\/li\u003e\n\u003cli\u003eSingle Element Class A Output Amplifier\u003c\/li\u003e\n\u003cli\u003eTransformer Balanced XLR Inputs and Outputs\u003c\/li\u003e\n\u003cli\u003eZener Shunt Regulated Audio Power Supply\u003c\/li\u003e\n\u003cli\u003eCompression Ratios - 4:1, 8:1, 12:1 and 20:1\u003c\/li\u003e\n\u003cli\u003eFast Attack Time - 20 microseconds to 800 microseconds\u003c\/li\u003e\n\u003cli\u003eRelease Time - 50 milliseconds to 1.1 second\u003c\/li\u003e\n\u003cli\u003eGain of 45dB (full gain with no limiting)\u003c\/li\u003e\n\u003cli\u003eRuggedized Design - PCB stiffener, chassis mount transformers\u003c\/li\u003e\n\u003cli\u003ePurple Anodized Aluminum Front Panel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Purple Audio","offers":[{"title":"Default Title","offer_id":44449454293095,"sku":"22332","price":1495.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_purple_audio_mc77_compressor-limiter__1565_d990285c-853a-4e9c-bc27-4d7faaec1dbc.jpg?v=1787089019","url":"https:\/\/vintageking.mom\/products\/purple-audio-mc77-compressor-limiter-1565-used","provider":"Vintage King","version":"1.0","type":"link"}