{"product_id":"golden-age-project-comp554mk2-b1","title":"Golden Age Project COMP-554 MKII 500 Series Diode Bridge Compressor (Warehouse Deal, Minor marks)","description":"\u003cp\u003eThe Golden Age Project COMP-554 MKII is the 500 Series version of the COMP-54 MKIII diode-bridge compressor, with extra routing and tone options for a lunchbox rack. The all-discrete Class-A path uses transformer-balanced input and output plus an interstage transformer. Stepped Threshold, Ratio, Attack, and Recovery (continuous Gain makeup) deliver 2254-style compression in a single 500 slot.\u003c\/p\u003e\n\n\u003ch3\u003eSidechain, AIR, and Inserts\u003c\/h3\u003e\n\u003cp\u003eThree sidechain filter frequencies and three sidechain modes (Internal, Insert, External) cover bus and tracking work. External sidechain I\/O is electronically balanced at +4 dBu on the right-slot rack connections. Dual insert connectors accept an EQ-573 in the audio and\/or sidechain path. A three-position AIR EQ switch offers Flat, +3 dB, or +6 dB at 30 kHz. Separate hardwire bypass and compression OUT switches, stereo link, dual-reference output metering (+4 \/ +12 dBu), a two-position output termination switch, and soft-start power ramp complete the module. Transformers are prepared for Carnhill upgrade.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 500 Series Class-A diode-bridge compressor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 1 (single-width 500 module)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCircuit:\u003c\/strong\u003e Discrete; no ICs in signal path; transformer-balanced I\/O plus interstage transformer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Threshold, Ratio, Attack, Recovery, Gain makeup\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreshold:\u003c\/strong\u003e -20 dB to +10 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRatio:\u003c\/strong\u003e 1.5:1 to 6:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStepped controls:\u003c\/strong\u003e All except Gain makeup\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSidechain filters:\u003c\/strong\u003e Three selectable frequencies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSidechain modes:\u003c\/strong\u003e Internal, Insert, External (electronically balanced @ +4 dBu on right slot)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAIR EQ:\u003c\/strong\u003e Flat, +3 dB, or +6 dB @ 30 kHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeter:\u003c\/strong\u003e Output (+4 or +12 dBu reference) or gain reduction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBypass:\u003c\/strong\u003e Hardwire bypass; separate compression IN\/OUT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInserts:\u003c\/strong\u003e Two connectors for EQ-573 in audio and\/or sidechain path\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLink:\u003c\/strong\u003e Stereo link for two modules\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput termination:\u003c\/strong\u003e Two-position switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI\/O:\u003c\/strong\u003e Via 500 Series rack edge connector\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 500 Series rack \/ lunchbox\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Single-width 500 Series\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.91 kg (4.2 lb) as listed by distributor (may include packaging)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGolden Age Project COMP-554 MKII\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Golden Age Project","offers":[{"title":"Default Title","offer_id":67700461273337,"sku":"COMP554MK2-b1","price":584.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5766\/1177\/files\/COMP554MK2.jpg?v=1765321619","url":"https:\/\/blackoutaudio.com\/products\/golden-age-project-comp554mk2-b1","provider":"Blackout Audio","version":"1.0","type":"link"}