$10800.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store skyfiaudio
(455) 100.0%,
Location: Glen Rock, New Jersey
Ships to: US,
Item: 296503133600
All returns accepted:ReturnsNotAccepted
Return policy details:
Marantz:Marantz
MPN:Model 9
Model Nine:Model Nine
Marantz Model 9 Vintage Tube Monoblock Amplifier (Single) – THE Holy Grail Marantz Model 9 Vintage Tube Monoblock Amplifier (Single) – THE Holy Grail General: This is a unique opportunity to own one of the most coveted pieces of audio history. The Model 9 was the top of the line for Marantz in the late 1960’s, and while they do come up for sale on occasion, they are fairly rare. We’ve only had the pleasure of having one or two sets here at SkyFi. This listing is for a single unit, perfect for someone looking for a matching sock 🙂 or setting up a mono system that’s so popular these days. While we have a second Marantz Model 9, they were too far apart in production dates to sell as a pair. Most shops would do just that and it’s likely the new owner would never notice much of a difference other than a slight gain variation. But that’s not how we roll. Physical condition is above average. No signs of heavy use or abuse anywhere to be found. All paintwork and writing is intact and original! Incredible when you realize this is nearly 60 years “young” in age. This amplifier also includes a very desirable set of vintage tubes GE/Amperex. The Model 9 clocks in at 63 lbs, offers 70 W, and can push up to 40 W in a user selectable Triode output mode. Please see our photos for a copy of the original Marantz 1960’s advertisement with full specifications. The last set of Model 9’s we had sold for well over $20k several years ago. *Note this Model 9 is not the re-issue amplifier, but rather an original vintage unit from the 1960’s. Cosmetic Notes This amplifier is missing its front connection cover which is very common. There are reproductions ones available if this is important to you that will match nicely for about $350. It also had the top cover screws replaced at some point in the past. Light cosmetic blemishes to the chassis and faceplate. This unit appears to be all original per our research and inspection. We fitted it with a period correct set of tubes consisting of a pair of GE branded Mullard gold pin 6922, Amperex branded GE 6CG7, and two matched date code pairs of strong testing Mullard Blackburn XF3 El34. The amp biased up as expected intended and passed our bench and listening tests with flying colors. Technical Notes The serial number of this unit is 2925 placing it towards the end of Model 9 production. Using EL34 tubes, this ultra-linear parallel push-pull design produced 70 watts of power, a significant accomplishment for its time. The increased power resulted, in part, from the strong rivalry with McIntosh, whose power amplifiers (at the time) were generally more muscular than comparable Marantz models. It’s worth noting that the MODEL 9 can also be set in triode operation for even better sound at lower wattage. In addition to its high power, the MODEL 9 reached new cosmetic horizons thanks to a bias meter centered on the front panel and a drop-down front panel door that concealed adjustments and connections. Until then, Marantz products had been more industrial-looking devices designed to be hidden away, but Saul was coming to realise that the audiophile was as equally as concerned about interior design, and that highend audio equipment was something that should be put on display. Mid-century design and architecture is one of the most significant design movements to date. It was during this period that folks began to care more about how their homes looked, and indeed about how their music sounded. Bauhaus had infiltrated New York, while designers like Eames, Bertoia, Saarinen, Wright, and Le Corbusier were creating aspirational products and places. The MODEL 9 was designed to align with, and perhaps accentuate, such sought-after statement pieces, and the certain lifestyle they represented. Built on Heroes of the Past In 1960, Paul Simon, Neil Diamond and Lou Reed were New York’s most exciting young artists. The computer mouse, etch a sketch, countertop microwave oven and the audio cassette had just been invented. Thanks to the efforts of guitar hero Les Paul, multitrack recording had become standard for both consumption and recording. His company, Ampex, had created the eight-track studio recorder, enabling people to record instruments separately and mix them into one cohesive composition, and so music lovers were looking for technologies that could accurately reproduce those recordings. Since 1953, Saul Marantz had been developing a series of amplifiers from his home in Kew Gardens, Queens. Having found success with his audio consolette, Saul evolved the product into the MODEL 1, which, with a great deal of tinkering became the MODEL 2, and so on, until in 1960 he released the MODEL 9, a groundbreaking new amplifier. Yet the MODEL 9 was more than just a looker. It was one of the first amplifiers to use a meter and knob to perform different test functions (at gain zero). It is equipped with trimmers to adjust the bias of every output tube, but also to set AC and DC balance, which was of course incredibly convenient for the user at that time as it meant that no scope or other testing equipment was needed. And such was the amplifier’s smooth control and stability of power, NASA famously customized the MODEL 9 for use in the Apollo Space Program. Meanwhile, the “porthole” power meter – in addition to allowing users to easily compensate for different tube characteristics – extended the Marantz tradition of integrating functionality with form, providing a trademark that is still usĂ©d by Marantz today. Again, it is Saul’s understanding of mid-century design that has meant the porthole has stood the test of time. It is iconic today, as it was 60 years ago. Like many products at the time, self assembly was required, partly in the interest of keeping the price down. Each unit came with a manual, test card, and schematic diagram, as well as an accessory kit containing an assortment of screws and an Allen key. The instruction manual goes on to say, “The MODEL 9 is remarkably cool in its normal operation.” Admittedly it does then warn that any amplifier will become hot if not allowed to freely dissipate itself into the surrounding air… But still, it is remarkably cool. Ownership: Unknown Connections: RCA inputs and speaker terminals. General Sound: Smooth, uncolored, undistorted natural and clean Cosmetic Condition: 8/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. Working Condition: Working perfectly and tested in our lab and listening room. Included: Just the unit and power cord. Packing: Will be packed using our highly developed in-house process and custom packing materials. Testing Process: We 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 resistors and other passive components for signs of overheating. If tube arcing has occurred in the past we can usually spot discoloration on the output tube sockets. On vintage units we often spot check select capacitors for value and ESR. If the amplifier passes visual inspection, we move on to a full test of all of the tubes. We use a modern Amplitrex AT-1000 Professional Tube Tester which is capable of testing both emission and Gm with a high degree of accuracy. We document the results of each tube and replace any weak or suspect tubes before proceeding. When we power on tube amplifiers for the first time we usually use a variac and current limited AC supply and slowly raise the voltage up to nominal mains level while monitoring plate, screen, filament, and negative bias supply voltages where applicable. If everything is in order we feed a low level test signal into the amplifier’s input and monitor its output on an oscilloscope across an 8 ohm dummy load. At this point we are just looking to verify basic function and confirm that the output transformers are not damaged. Once we have verified that the amplifier is safe to operate, we connected it to full mains power. For fixed bias amps we set the bias to manufacturer spec. For cathode biased amps we monitor the plate to cathode voltage to determine if the output tubes are operating in a safe range. Once the output section is verified we move onto bench evaluation. We start by feeding the input of the amplifier with a low level 1 KHz test signal, slowly increasing its amplitude while monitoring the amplifier’s output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. We finish off the bench evaluation with a 1 KHz square wave check and a 20 Hz to 20 KHz sine sweep to assess the amplifier’s frequency response characteristics. This battery of tests will usually reveal if the amplifier has any issues that need further attention. Before the device leaves the bench we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics. If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours minimum. For tube amps we like to run this test at least twice. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when it has fully come up to temperature. We find this step to be essential, especially for vintage units. SkyFi Audio – Curators of Vintage Audio Gear SkyFi 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. Please note we are not a repair shop and only restore what we own. ———- PURCHASING GUIDELINES: 1) This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. All local pickup items are only wrapped in industrial strength clear stretch wrap if the original manufacturer packaging is unavailable. Local pickup is available in Glen Rock, NJ, 07452, just a half hour drive from Midtown Manhattan, with convenient parking near our building. If we don’t have the original packaging, we use heavy-duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box. 2) We will not review or accept 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 do not message, email, or text any offers. 3) All listings are eligible for the eBay 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. We only accept bank wire transfers for international payments and frequently ship worldwide via UPS. 4) Please ensure your shipping address is correct within eBay as we will ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions. 5) eBay may charge and collect sales tax to your state/jurisdiction which we have no control over. eBay v1.8 × × × × × × × × × × × × × × × × × × × Buy now and save! Tell a friend Visit store Watch now Postage info UPS Ground – $0.00 Local Pickup – $0.00 Click the Postage tab above the listing description for more info Additional delivery notes PICK UP OPTION Our items are available for pick-up. Pick up procedure is as follows: Purchase the item through eBay Email us to coordinate pickup PAYING VIA PAYPAL We accept PayPal on our all our items so you can shop with confidence. Simple choose the PayPal option when proceeding through the checkout. Additional Information No additional information at this time Ask seller a question You might also like Dynavector 10×3 High-Output MC Phono Cartridge Music Reference RM-5 MK II Tube Preamplifier with Phono Music Reference RM-9 Tube Amplifier With EL34’s Marantz Model 150 Vintage AM/FM Tuner with Scope Contact To contact our Customer Service Team, simply click the button here and our Customer Service team will be happy to assist. Ask seller a question © SkyFi Audio Postage Click the Postage tab above the listing description for more info Payment Accepted Payment Methods PayPal Returns Returns are not accepted Seller will pay for return shipping. eBay integration by
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