{"product_id":"marantz-pm420-hi-fi-amplifiers-excellent","title":"Marantz PM420 - Hi-Fi Amplifiers - Excellent","description":"\u003ch1\u003eMarantz PM420 - Hi-Fi Amplifiers - Excellent\u003c\/h1\u003e\n\n\u003ch2\u003eWhy This One\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eExcellent condition — light signs of use, no obvious issues\u003c\/li\u003e\n  \u003cli\u003eFully tested — all applicable functions verified working\u003c\/li\u003e\n  \u003cli\u003e40W per channel, 0.05% THD — clean, capable 1980s Marantz engineering.\u003c\/li\u003e\n  \u003cli\u003eA cost-effective entry into classic Japanese integrated amplifier performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCondition: Excellent\u003c\/h2\u003e\n\n\u003cp\u003eThis Marantz PM420 is an excellent-condition Hi-Fi amplifier. It has passed our 14-point functional test, with 2 item(s) not applicable to this unit. Please review all photos carefully, as they provide an accurate representation of the cosmetic condition of the product.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMarantz PM420\u003c\/li\u003e\n  \u003cli\u003eNo additional accessories included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout This Model\u003c\/h2\u003e\n\u003cp\u003eThe Marantz PM420 is a stereo integrated amplifier from 1982, delivering 40 watts per channel into 8Ω with a minimum speaker load impedance of 4Ω. It features a built-in MM phono stage alongside line-level inputs, making it a versatile single-box solution for both turntable and source-based systems. Total harmonic distortion is rated at just 0.05%, with a frequency response spanning 10Hz to 30kHz and a signal-to-noise ratio of 90dB on line inputs — figures that reflect Marantz's commitment to clean, accurate amplification in this era. A damping factor of 50 provides solid control over speaker drivers, contributing to the composed, well-defined sound character these late-Marantz Japanese-era integrateds are known for.\u003c\/p\u003e\n\n\u003cp\u003eA great opportunity to own a Marantz PM420 at this price point.\u003c\/p\u003e","brand":"Marantz","offers":[{"title":"Default Title","offer_id":53963291853137,"sku":null,"price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/6913\/0833\/files\/c206e087-c036-4761-8921-05b700b818e8.jpg?v=1780667970","url":"https:\/\/www.audiotrader.co.uk\/products\/marantz-pm420-hi-fi-amplifiers-excellent","provider":"Audio Trader","version":"1.0","type":"link"}