{"product_id":"nakamichi-st-7-vintage-am-fm-tuner-original-box-and-manual","title":"Nakamichi ST-7 Vintage AM\/FM Tuner with Original Box","description":"\u003cp\u003e\u003cstrong\u003eGeneral:\u003c\/strong\u003e\u003cbr\u003eI enjoy rotating different vintage HiFi gear into my home office, and for this excellent vintage Nakamichi tuner it's time it finds a new home for someone else to enjoy as much as I did. I bought this from a family member of the original owner after he passed away many years ago, along with a  complete killer vintage 1980's Naim \"Chrome Bumper\" system and stunning KEF bookshelf speakers.\u003c\/p\u003e\n\u003cp\u003eDuring our in-house testing, we were shocked how well it performed pulling in far away signals into full stereo.  We rank this up there with some of the top tuners we've ever tested, which is really saying something for how well-designed and built this brand was back in its glory days.\u003c\/p\u003e\n\u003cp\u003eThe Nakamichi ST-7 is widely regarded as one of the finest digital tuners ever produced. Thanks to its exceptional sensitivity and selectivity, it can lock onto stations that many other tuners simply cannot receive.\u003cbr\u003e\u003cbr\u003eThis particular ST-7 is especially rare, as it includes the original box!  Examples like this are increasingly hard to find, making it one of the few remaining ST-7's preserved in its original presentation.\u003cbr\u003e\u003cbr\u003eA standout feature is Nakamichi’s \"Schotz Noise Reduction\" technology, which improves effective stereo sensitivity by approximately 9 dB. This allows for clean, stable stereo reception on broadcasts that would normally be limited to mono.\u003cbr\u003e\u003cbr\u003eAdditional features include seek and manual tuning, along with 16 randomly programmable FM\/AM presets, combining ease of use with top-tier performance.\u003cbr\u003e\u003cbr\u003eThe ST-7 pairs beautifully with classic Nakamichi components such as the CA-5 or CA-7 preamplifiers, or the legendary CR-7A cassette deck.\u003cbr\u003e\u003cbr\u003eThis tuner will be carefully double-boxed to ensure the original box remains intact for the next owner.\u003c\/p\u003e\n\u003cp\u003eAlso a copy of the owner's manual will be included that was reprinted on heavyweight paper.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSkyFi Cosmetic Notes:\u003c\/b\u003e\u003cbr\u003eVery light scratches on the top cover.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eBrand Background:\u003c\/b\u003e\u003cbr\u003eNakamichi was founded in 1948 by Mr. Etsuro Nakamichi, starting from a small research institute in Tokyo, Japan that provided R\u0026amp;D for major brands, government entities, universities and organizations.\u003cbr\u003e\u003cbr\u003eSince then, it has established itself as a trusted creator of high-quality audio products, such as the Nakamichi 1000, the world's first 3-Head cassette deck.\u003cbr\u003eNakamichi's product lines are driven by an intense scientific curiosity, the passion for audio, and commitment to uncompromising quality and performance.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eOwnership:\u003c\/b\u003e\u003cbr\u003eSecond Owner\u003cbr\u003e\u003cbr\u003e\u003cb\u003eConnections:\u003c\/b\u003e\u003cbr\u003eRCA, Antenna, Captive Power Cord\u003cbr\u003e\u003cbr\u003e\u003cb\u003eGeneral Sound:\u003c\/b\u003e\u003cbr\u003eSmooth, uncolored, undistorted natural and clean\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCosmetic Condition:\u003c\/b\u003e\u003cbr\u003e8\/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top.. See our detailed rating description \u003ca href=\"https:\/\/skyfiaudio.com\/pages\/our-rating-scale\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWorking Condition:\u003c\/b\u003e\u003cbr\u003eWorking perfectly and tested in our lab.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eIncluded:\u003c\/b\u003e\u003cbr\u003eUnit, Box, re-printed manual on heavyweight paper.\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePacking:\u003c\/b\u003e\u003cbr\u003eOriginal Manufacturers Packing (boxed inside a larger box to preserve the original).\u003cbr\u003e\u003cbr\u003e\u003cb\u003eOriginal MSRP:\u003c\/b\u003e\u003cbr\u003e$849.00\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecs:\u003c\/b\u003e\u003cbr\u003eType: Mono\/Stereo Tuner\u003cbr\u003eTuning Bands: FM, MW\u003cbr\u003eTuning Scale: Digital\u003cbr\u003eFM Tuning Range: 87.5 to 108 MHz\u003cbr\u003eMW Tuning Range: 520 to 1710 kHz\u003cbr\u003eSensitivity: 1.7uV (FM)\u003cbr\u003eSignal to Noise Ratio: 76 dB (FM), 48 dB (MW)\u003cbr\u003eDistortion: 0.08% (FM), 0.4% (MW)\u003cbr\u003eSelectivity: 60 dB (FM), 20 dB (MW)\u003cbr\u003eFrequency response: 20 Hz to 15 kHz (FM)\u003cbr\u003eOutput: 500mV (FM), 200mV (MW)\u003cbr\u003e\u003cbr\u003e\u003cb\u003eDimensions:\u003c\/b\u003e\u003cbr\u003e17.13\" x 2.48\" x 11.38\" (435 x 63 x 289mm)\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\u003cbr\u003e10.3 lbs.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApproximate Age:\u003c\/b\u003e\u003cbr\u003e1987\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManual:\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0003\/3275\/9084\/files\/Nakamichi-ST-7.pdf?v=1767743794\" rel=\"noopener\" target=\"_blank\"\u003eClick Here\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eRecommended Cables:\u003c\/b\u003e\u003cbr\u003e\u003ca rel=\"noopener\" href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-hero-interconnects-pair-rca-ultraplate-or-wbt-connectors-new\" target=\"_blank\"\u003eKimber Kable - RCA Interconnects\u003c\/a\u003e - Better\u003cbr\u003e\u003cbr\u003e\u003ca rel=\"noopener\" href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-silver-streak-interconnects-pair-rca-ultraplate-or-wbt-connectors\" target=\"_blank\"\u003eKimber Kable - RCA Interconnects\u003c\/a\u003e - Best\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTesting Process:\u003c\/b\u003e\u003cbr\u003eWe start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. \u003cbr\u003e\u003cbr\u003eOn vintage units we often spot check select capacitors for value and ESR. Vintage analog tuners also have moving parts related to the tuning gang and dial string. These parts are inspected for smooth operation. \u003cbr\u003e\u003cbr\u003eIf the unit passes visual inspection it is bench tested for a handful of key performance parameters using a Sencore SG80 AM\/FM Stereo Analyzer. The SG80 allows us to “simulate” an ideal radio station using precision test signals instead of music. This device in conjunction with an oscilloscope allows us to properly evaluate the following parameters:\u003cbr\u003e\u003cbr\u003e1) AM Reception (Where Applicable)\u003cbr\u003e2) FM Mono Reception \u0026amp; Tuning Meter Function\u003cbr\u003e3) FM MPX Reception (Stereo)\u003cbr\u003e4) Dial Tracking: How accurately the tuner dial or display indicates the actual frequency of the broadcast being received.\u003cbr\u003e5) Stereo Separation: A properly working stereo tuner will have minimal crosstalk between the left and right channel.\u003cbr\u003e6) Sensitivity \u0026amp; Signal Strength Meter Function: By lowering the output of the SG80 we can simulate weak stations and determine how well the tuner will be able to pull in weak distant stations. This adjustment also helps us verify signal strength meter function.\u003cbr\u003e\u003cbr\u003eIf the tuner has acceptable performance related to the parameters above we connect the unit for listening tests with a simple dipole antenna. We listen for audio reproduction quality of local stations and evaluate how many stations the tuner can receive while we sweep through the dial.\u003cbr\u003e\u003cbr\u003eWe are looking to verify that the tuner can decode stereo on strong local broadcasts and pick up a wide variety of local stations at the bottom, middle, and top of the frequency band. At this point we also test convenience features such as muting, filters, built in oscilloscope function, etc. \u003cbr\u003e\u003cbr\u003eWe finish up with an extended listening test on our long term test rig. We tune in to a strong local station and monitor for drift over a minimum period of 2-3 hours.\u003c\/p\u003e","brand":"Nakamichi","offers":[{"title":"Default Title","offer_id":47672847302910,"sku":"107298","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0003\/3275\/9084\/files\/nakamichi-st-7-vintage-am-fm-tuner-with-original-box-544.jpg?v=1767975426","url":"https:\/\/skyfiaudio.com\/en-gb\/products\/nakamichi-st-7-vintage-am-fm-tuner-original-box-and-manual","provider":"SkyFi Audio","version":"1.0","type":"link"}