McIntosh MC7108 - 8 Channel Amplifier

Description: McIntosh MC7108 - 8 Channel Amplifier - Configurable! McIntosh MC7108 - 8 Channel Amplifier - Configurable! General: Super flexible multi-channel amplifier from renowned US maker McIntosh. Configurable to 8, 7, 6, 5, or 4 channels, with varying degrees of power delivery to fit just about any home theater system. Bridged channels can deliver 100W. MC7108 OUTPUT OPERATING CONFIGURATIONS: 8 x 40 watt channels 6 x 40 watt channels and 1 x 100 watt bridged pair channel 4 x 40 watt channels and 2 x 100 watt bridged pair channels 2 x 40 watt channels and 3 x 100 watt bridged pair channels 4 x 100 watt bridged pair channels (4 ohm loudspeaker loads) In excellent cosmetic condition, and fully tested in our lab were it performed as it should. Service Notes: - Volume trimmer for channel 1 replaced. - All lamps replaced. Cosmetic Notes: - Light marks on end caps and metal trim around glass. Brand Background: McIntosh Laboratory is an American manufacturer of handcrafted high-end audio equipment based in Binghamton, New York. The company was founded in 1949 by Frank McIntosh. The company designs and produces audio amplifiers, stereo tuners and other consumer electronics products. Ownership: Single Owner Connections: RCA input and output jacks, screw terminals for speakers, captive power cord. 12V triggers. General Sound: Accurate to the recording Cosmetic Condition: 7/10 = Good. One or two minor scratches. Well Maintained. Working Condition: Working perfectly and tested in our lab and listening room. Included: Just the unit and power cord. Packing: Original Manufacturers Packing Specs: POWER OUTPUT, EIGHT CHANNELS 40 watts per channel, minimum sine wave continuous average power output per channel, all channels operating into 4 ohm loads. The output RMS voltage is: 12.6V across 4 ohms POWER OUTPUT, TWO CHANNELS BRIDGED 100 watts into a 4 ohm load, minimum sine wave continuous average power output. The output RMS voltage is: 20V across 4 ohms OUTPUT LOAD IMPEDANCE 8 or 4 ohms, for all eight separate channels 8 or 4 ohms, for all Bridged Pairs RATED POWER BAND 20H2 to 20,000Hz TOTAL HARMONIC DISTORTION 0.005% maximum harmonic distortion at any power level from 250mW to rated power per channel from 20Hz to 20,000Hz, all channels operating. IHF DYNAMIC HEADROOM 1.8dB FREQUENCY RESPONSE + 0, -0.25dB from 20Hz to 20,000Hz + 0, -3.0dB from 10Hz to 100,000Hz INPUT SENSITIVITY 1V, (2.5V with Level control at center detent) A WEIGHTED SIGNAL TO NOISE RATIO 92dB (112dB below rated output) INTERMODULATION DISTORTION,SMPTE 0.005% maximum if instantaneous peak power does not exceed twice the output power rating per channel, with all channels operating, for any combination of frequencies from 20Hz to 20,000Hz. WIDE BAND DAMPING FACTOR 200 at 8 ohms 100 at 4 ohms INPUT IMPEDANCE 20,000 ohms POWER GUARD Clipping is prevented and THD does not exceed 2% with up to 14dB overdrive at 1000Hz. POWER REQUIREMENTS 120V, 50/60Hz, 8A UL/CSA Dimensions: Front panel: 17-1/2 inches (44.5cm) W, 7-1/16 inches (17.9cm) H, 20 inches (50.8cm) D behind mounting panel, including clearance for connectors. Panel clearance required in front of mounting panel is 3/4 inch (1.9cm). Weight: 40 lbs. Approximate Age: 1998 The SkyFi Testing Process for Solid State Amplifiers: 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 the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR. If the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1KHz test signal at the amplifier’s input and slowly increase its amplitude while monitoring the 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. If the device under test has both balanced and single ended inputs they are both tested at this time. We finish off the bench evaluation with a 1KHz square wave check and a 20Hz to 20KHz 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. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature. 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 10x3 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

Price: 2910 USD

Location: Glen Rock, New Jersey

End Time: 2024-08-17T19:41:57.000Z

Shipping Cost: 0 USD