McIntosh MR77 Vintage Tuner

Description: McIntosh MR77 Vintage Tuner SkyFi Audio - Curators of Vintage Audio GearSkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of high end audio equipment. We only buy equipment that we admire and are passionate about. No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units.Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support.----------If you haven't heard a vintage FM tuner recently, you really owe it to yourself to give one a listen. The right model matched with the proper antenna will make some of the warmest and most natural sounding music you've (ever) heard. Especially through an all analog piece like this McIntosh MR77. We are very lucky in our area to have some of the best sounding stations in the world, and you better believe we take full advantage. If you come to our shop you're likely to hear our local Jazz station WBGO playing from one of our vintage tuners just like this one. Sitting just below the renowned McIntosh MR78, this MR77 model provides 99% of the sound quality with a just a few removed features, which most users would never ever use or miss. My favorite feature (that's actually not found in the MR78!) is the "magic eye" indicator. It's an actual tube-based light emitting component with two lines that fluctuate indicating multipath reception. Super cool! Condition is very good with only the slightest signs of use. The cabinet is very presentable for its age and looks amazing when matched with this tuner. Thoroughly tested in our lab utilizing our Sencore SG80 FM Generator, which allows us to generate a reference FM signal of any frequency and amplitude, and then measure the results of the MR77 tuner output on our Sencore PR81 or oscilloscope. This unit passed with flying colors and produced a natural and warm sounding output. Cosmetic Notes:• Light blemishes on metal surfaces and covers• Glass has a few defects and some of the lettering is worn The SkyFi Testing Process for Tuners: We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale signs of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. Then the tuner is thoroughly tested in our lab utilizing our professional Sencore SG80 FM Generator, which allows us to generate a reference FM signal of any frequency and amplitude, and then measure the resulting tuner output on our Sencore PR81 or oscilloscope. Final testing involves pushing actual music from the tuner. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some tuners will then move into our listening room where they are tested with our in-house reference speakers of choice. Technical Specifications: for a PDF copy of the MR77 Owner's Manual SENSITIVITY: 2μV for 35 dB of quieting; 2.5μA at 100% modulation (±75 kHz deviation) for 3% total noise and harmonic distortionSIGNAL TO NOISE RATIO: 75 dB below 100% modulationHARMONIC DISTORTION:0.2% mono or stereo at 100% modulation, 20 Hz to 15,000 Hz. Typically, 0.05% at 1,000HzDRIFT: 25,000 Hz in first two minutes; thereafter 5,000 Hz at 25°C in 24 hoursFREQUENCY RESPONSE:±1 dB 20 Hz to 15,000 Hz with standard de-emphasis, (75μS) and 19,000 Hz pilot filterCAPTURE RATIO: 0.25 dB detector only; 2.5 dB complete tunerSELECTIVITY: Adjacent channel 6 dB IHF, carrier 47 dB down; Alternate channel 50 dB IHF, carrier 90 dB downSPURIOUS REJECTION: 100 dB IHFIMAGE REJECTION: 100 dB; 88 to 108 MHz (IHF)MAXIMUM SIGNAL INPUT: 12 volts across 300 ohms antenna terminals will not increase harmonic or intermodulation distortionINTERMODULATION DISTORTION: 0.2% mono or stereo for any combination of frequencies from 20 Hz to 15,000 Hz with peak modulation equal to 100% or less. Typically 0.1%AUDIO HUM: 75 dB down from 100% modulationMUTING: 70 dB noise reduction between stationsMUTING THRESHOLD: Position 1; 5 μ V ; Position 2, 20μVSCA FILTER:50 dB down from 67 kHz to 74 kHz; 275 dB per octave slopeSTEREO SEPARATION:40 dB at 1,000 HzSTEREO FILTER:10 dB noise reduction in position 120 dB noise reduction in position 2ANTENNA INPUTS:300 ohms balanced; 75 ohms un- balancedAUDIO OUTPUT:2.5 volts into 47,000 ohms; 1 volt into 600 ohms from fixed outputPOWER REQUIREMENT:120 volts, 50/60 Hz. 35 wattsIF SYSTEM:8-Pole Rimo Filter, 2 IC's, 1 J-Fet, and push-pull overlay power transistor stage driving a linear phase bridge discriminatorSTEREO INDICATOR:Front panel stereo light activated by 19,000 Hz onlyAUTOMATIC MONO-STEREO SWITCH:Mclntosh developed; all electronic automatic mono-stereo switching circuitSEMICONDUCTOR COMPLEMENT: 21 Transistors, 24 Diodes, 4 Integrated Circuits, 1 Indicator TubeSIZE:Front panel measures 16 inches wide (40.64 cm) by 5-7/16 inches high (13.81 cm). Chassis measures 15 inches wide (38.1 cm) by 13 inches deep (33.02 cm), including PANLOC shelf and back panel connectors. Knob clearance required is 11⁄2 inches (3.81 cm) in front of mounting panelFINISH:Front panel is anodized gold and black with special Mclntosh gold/teal panel nomenclature illumination. Chassis is chrome and blackMOUNTING:Exclusive Mclntosh developed professional PANLOCWEIGHT:27 pounds (12.25 kg) net, 39 pounds (17.69 kg) in shipping carton Item Included Original Box Not Included Manual Yes and Online Remote Not Applicable Cables Yes - Power Only Physical Condition 7 / 10 Working Condition 10 / 10 ----------PURCHASING GUIDELINES:We do not accept or review any offers that do not go through the official eBay system. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Please don’t message, email, or text any offers. All listings are eligible for eBay’s Global Shipping Program unless the item exceeds the maximum weight/price requirements to your country. If this is the case, simply message us via eBay as we can accept bank wire transfers for international payments. And we frequently ship worldwide with UPS.And please ensure your shipping address is correct within eBay as we ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions.SCHEDULING AN APPOINTMENT: We are currently operating from our shop inside our dedicated building in Glen Rock, NJ. You’re welcome to make an appointment if there’s a piece of equipment you’d like to see in operation before or after purchase. We have several well-equipped and dedicated listening areas, plus a dedicated listening studio with tons of equipment of all makes and models. We’re not a store, so please don’t make an appointment if you’re just curious as to how a speaker or piece of equipment sounds. In essence - no tire kickers please.You can message us here on eBay with any questions or to schedule an appointment. We can also arrange to install, calibrate, and tune your newly purchased gear in your listening room if you’re local to our area. This is super useful when purchasing large speakers or heavy amplifiers. It’s also great for ensuring your new turntable is setup correctly in its final resting place.eBay v1.4eBay integration by

Price: 2099 USD

Location: Glen Rock, New Jersey

End Time: 2023-11-04T19:35:36.000Z

Shipping Cost: 0 USD