{"product_id":"marantz-2220b-receiver-in-near-mint-condition-professionally-rebuilt-30-day-warranty","title":"Marantz 2220B Receiver in Near Mint Condition. Professionally Rebuilt + 30 Day Warranty!","description":"\u003cp\u003eA rare condition late revision (with the separate FM Dolby board) Marantz 2220B stereo receiver in pristine condition, professionally restored and rebuilt to better-than-factory specifications.\u003c\/p\u003e\n\u003cp\u003eSee high resolution photos for 9.5\/10 cosmetic condition.\u003c\/p\u003e\n\u003cp\u003ePerformance was confirmed to exceed factory specifications.\u003cbr\u003eSee attached photos for a measured frequency response of 20-20KHz +\/- 1dB identical from -10 to 0dBV output, ~24WRMS per channel power output before clipping, and close to 30dB better than the 0.5% specifications for THD+N at ~ -73dB.\u003cbr\u003eThis is no coincidence. This unit has been meticulously rebuilt to exceed its factory performance using top quality modern parts and a few modifications to improve on known problem areas in the original design. See attached photos of the rebuild process.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWe will include a high-quality color laser reprint of the original user manual upon request.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe receiver will be carefully packed in an over-sized box and well protected for safe shipping. We have a lot of experience shipping delicate electronic items.\u003cbr\u003eShipping costs are calculated automatically depending on your distance from our location in Northern California.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWe will warrant the receiver for US buyers to be fully operational and as described for a period of 30 days from the date of delivery.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis warranty excludes user-inflicted damage including physical damage, blown output transistors due to speaker shorts or overload, or any other obvious misuse, based on our exclusive judgement. \u003cbr\u003eShipping costs for repairs will be paid by the buyer and refunded if found that the fault is not due to the buyer’s misuse.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWork performed:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReceiver has been fully disassembled and deep-cleaned throughout.\u003c\/li\u003e\n\u003cli\u003eTuner dial moving parts have been removed, cleaned, and relubricated using Lithium grease.\u003c\/li\u003e\n\u003cli\u003eAll switches have been fully disassembled, physically cleaned, gently polished, and contact-treated using Deoxit D100.\u003c\/li\u003e\n\u003cli\u003eAll potentiometers have been fully disassembled, thoroughly cleaned, and contact-treated using Deoxit F100. \u003cbr\u003e\u003cem\u003eNote that most so-called “service\/restoration” just spray these with contact cleaner, which is a guarantee for future issues. \u003c\/em\u003e\u003cbr\u003e\u003cem\u003eSee illustration photo of  an application of contact cleaner only vs. a proper disassembly and deep clean.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower output transistors removed and tested to be within factory specifications. Old thermal compound cleaned, old Mica insulators removed, and new high efficiency SilPad insulators installed. Contact points cleaned and treated with Deoxit D100.\u003c\/li\u003e\n\u003cli\u003eBoth main filter caps replaced with genuine high quality Nichicon capacitors from reputable US sources.\u003c\/li\u003e\n\u003cli\u003eP700 power amplifier board removed and inspected. All solder joints reflowed as needed.\n\u003cul\u003e\n\u003cli\u003eAll Electrolytic and Tantalum capacitors were replaced with genuine Nichicon, Panasonic, and Wima film capacitors from reputable US sources.\u003c\/li\u003e\n\u003cli\u003eAll 4 original small signal transistors were replaced with genuine Fairchild or OnSemi modern equivalents.\u003c\/li\u003e\n\u003cli\u003eBoth glass-bead stabistors replaced with dual modern Fairchild silicon diodes.\u003c\/li\u003e\n\u003cli\u003eSpeaker protection relay replaced with a genuine Omron new equivalent relay.\u003c\/li\u003e\n\u003cli\u003eDC offset and idle current adjusted per service manual.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eP800 power supply board inspected. All solder joints reflowed as needed.\n\u003cul\u003e\n\u003cli\u003eAll Electrolytic and Tantalum capacitors were replaced with genuine Nichicon, Panasonic, and Wima film capacitors from reputable US sources.\u003c\/li\u003e\n\u003cli\u003e2 transistors, 2 double diodes and 1 standard diode replaced with modern Fairchild or OnSemi equivalents.\u003c\/li\u003e\n\u003cli\u003e35V rail voltage adjusted per factory service manual.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eP400 phono EQ board inspected. All solder joints reflowed as needed.\n\u003cul\u003e\n\u003cli\u003eAll Electrolytic and Tantalum capacitors were replaced with genuine Nichicon, Panasonic, and Wima film capacitors from reputable US sources.\u003c\/li\u003e\n\u003cli\u003e6 transistors replaced with modern Fairchild or OnSemi equivalents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePE01 preamp\/tone board inspected. All solder joints reflowed as needed.\n\u003cul\u003e\n\u003cli\u003eAll Electrolytic and Tantalum capacitors were replaced with genuine Nichicon, Panasonic, and Wima film capacitors from reputable US sources.\u003c\/li\u003e\n\u003cli\u003e8 transistors replaced with modern Fairchild or OnSemi equivalents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAM\/FM tuner boards inspected. All solder joints reflowed as needed.\n\u003cul\u003e\n\u003cli\u003eFM tuner frequency range adjusted for precise dial display.\u003c\/li\u003e\n\u003cli\u003eAM\/FM tuner tested and found to be working within factory specifications. FM stations tune in perfectly, stereo multiplex and muting work and sound great.\u003cbr\u003e\u003cem\u003eNote that no parts were replaced on the tuner boards. A full rebuild and recalibration of the tuner would require significant time and was therefore deemed unnecessary due to AM\/FM obsolescence.\u003c\/em\u003e\u003cbr\u003e\u003cem\u003ePerforming a full rebuild of the tuner boards can be done upon request for an additional charge of $200.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eOriginal tuning dial and meter incandescent lamps replaced with high-quality snap-in 360° cool blue LED fuse lights. \u003cbr\u003eFM Stereo and tuning needle lights were replaced with 8v 50ma 4mm high-quality modern miniature incandescent bulbs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cem\u003eThe visual improvement of these modern lights compared to the originals is quite remarkable! \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eAll original parts that were removed from the receiver are not included and are shown in the photos for reference only. \u003cbr\u003eWe will responsibly discard of these parts at our local electronics recycling facility.\u003cbr\u003e\u003c\/p\u003e","brand":"Marantz","offers":[{"title":"Default Title","offer_id":54128277455167,"sku":null,"price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/2261\/9967\/files\/2026-07-17_10-01-46-s.jpg?v=1784323734","url":"https:\/\/ultraferric.com\/products\/marantz-2220b-receiver-in-near-mint-condition-professionally-rebuilt-30-day-warranty","provider":"Ultra Ferric","version":"1.0","type":"link"}