{"product_id":"audio-system-test-record-stereo-84020","title":"Audio System Test Record – Stereo 84020 (Vinyl LP)","description":"\u003ch2\u003eAudio System Test Record – \u003cem\u003eStereo 84020\u003c\/em\u003e\n\u003c\/h2\u003e\n\n\u003cp\u003eA genuine find for the serious audiophile or hi-fi enthusiast, this \u003cstrong\u003eColumbia Audio System Test Record\u003c\/strong\u003e (Catalog No. Stereo 84020) is a purpose-built diagnostic disc designed to help listeners calibrate, evaluate, and optimize their playback systems. Test records like this one were produced during the golden age of high-fidelity audio — an era when the pursuit of perfect sound reproduction was both a science and an art form, and when record labels invested in helping consumers get the most from their equipment.\u003c\/p\u003e\n\n\u003ch3\u003eAbout the Record\u003c\/h3\u003e\n\u003cp\u003eColumbia's test records were engineered in collaboration with audio engineers and acousticians to provide a reliable, standardized reference for home and professional use. This pressing was produced during the height of the stereo LP era, when the industry was rapidly advancing turntable, cartridge, and amplifier technology. Owning a test record of this vintage is both a practical tool and a tangible piece of audio history.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's on It\u003c\/h3\u003e\n\u003cp\u003eTest records of this type typically include a carefully curated selection of diagnostic tones and musical passages designed to reveal the true character of your system, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStereo separation tests\u003c\/strong\u003e — isolating left and right channels to verify channel balance and crosstalk\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency sweep tones\u003c\/strong\u003e — sweeping from deep bass through upper treble to expose resonances, roll-offs, and peaks in your speakers or cartridge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTracking ability tests\u003c\/strong\u003e — high-velocity groove modulations that challenge cartridge compliance and anti-skate settings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMusical program material\u003c\/strong\u003e — real musical passages selected to demonstrate dynamic range, imaging, and tonal accuracy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWow and flutter reference tones\u003c\/strong\u003e — steady-state tones for measuring turntable speed stability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSide A matrix: \u003cstrong\u003e84020-A DM CSPS 2373\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRecord Condition\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCarefully cleaned with a \u003cstrong\u003eSpin-Clean record washer\u003c\/strong\u003e and stored in a new inner plastic sleeve\u003c\/li\u003e\n  \u003cli\u003eMinor surface scuffs consistent with age — \u003cstrong\u003eplayed flawlessly\u003c\/strong\u003e on a quality turntable with \u003cstrong\u003eno skips\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eMinor pops and crackles noted, as expected for a vintage pressing\u003c\/li\u003e\n  \u003cli\u003eRecord grade: \u003cstrong\u003eVG (Very Good)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eJacket Condition\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVery little wear — presents well with minimal handling marks\u003c\/li\u003e\n  \u003cli\u003eJacket grade: \u003cstrong\u003eVG (Very Good)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eCondition shown in photos — please review images carefully before purchasing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eA rare and practical piece of audio history. Whether you're dialing in a vintage turntable, testing a new cartridge, or simply curious about the science behind great sound, this test record belongs in your collection.\u003c\/em\u003e\u003c\/p\u003e","brand":"Portage MCC","offers":[{"title":"Default Title","offer_id":47810266890493,"sku":"STEREO-84020","price":20.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0512\/9597\/7651\/files\/Audio_System_Test_Record_Stereo_84020_Vinyl_LP.jpg?v=1783525291","url":"https:\/\/portagemcc.com\/fr\/products\/audio-system-test-record-stereo-84020","provider":"Portage MCC","version":"1.0","type":"link"}