McIntoshMC-7100usedMcIntosh MC7100 Compact Amplifier - Solid State Powerhouse**Please click here to check out our newly launched SkyFi Audio website with additional items for sale** Built to the same standards and component quality as all other Mc amps from this era - but i...1799.00

McIntosh MC7100 Compact Amplifier - Solid State Powerhouse

Listing ID: lis9j395 Classified 
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Ships fromGlen Rock, NJ, 07452
Ships toUnited States
Package dimensionsunspecified
Shipping carrierUPS
Shipping cost$99.00
Agon miniAverageResearch Pricing

**Please click here to check out our newly launched SkyFi Audio website with additional items for sale**

Built to the same standards and component quality as all other Mc amps from this era - but in a more compact chassis.  

We love the high quality and super capable speaker connectors on the back, which makes us wish they still made them like this. 

Includes balanced XLR and single ended inputs. Built like a tank and fully tested. 

A Small Sampling of Performance Features Include:

• All power transistors have limits for the maximum amount of power they can handle. The MC7100 output transistors and power supply have been designed to allow very high current flow into properly matched load impedances. However, if a short circuit or very low load impedance is connected to the MC7100 outputs, destructive current levels could be reached if it was not controlled by the SENTRY MONITOR circuit.

• All power transistors have limits to the maximum amount of heat they can safely tolerate. The MC7100 uses a highly efficient amplifying circuit which produces relatively little heat for the output power produced. The amplifier uses large area heat sinks to efficiently dissipate what heat it does generate. Natural convection air flow is sufficient for safe cool operation.

• A unique and patented feature of Mclntosh power amplifiers insures that each channel of the MC7100 will deliver full power, free of clipping distortion. A Mclntosh power amplifier with POWER GUARD will always deliver its maximum distortion free output. This power is always well above the rated power due to the Mclntosh philosophy of conservative design.

Performance limits are the maximum deviation from perfection permitted for a Mclntosh instrument. We promise you that when you purchase a new MC7100 from a Mclntosh Franchised Dealer, it will be capable of performance at or better than these limits.


"The McIntosh MC7100 represents a happy combination of truly state-of-the-art performance and design, handsome styling, and electrical and mechanical ruggedness from a company that has enjoyed an enviable reputation for customer support and product reliability for almost fifty years. It is also something of a bargain for a McIntosh product. Priced well below most so-called "high-end" amplifiers, it appears to provide most of their good qualities at a price not far above those of many well-known mass-market designs. That's great engineering."

150 watts into 4 ohm loads or 100 watts into 8 ohm loads minimum sine wave continuous average power output per channel, both channels operating.

The output RMS voltage is:
28.3V across 8 ohms 
24.5V across 4 ohms

300 watts into an 8 ohm load minimum sine wave continuous average power output. The output RMS voltage is: 49 volts across 8 ohms.

8 or 4 ohms

8 ohms

20Hz to 20,000Hz

0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power output.

8 ohms, 1.7dB
4 ohms, 2.1dB

+ 0, -0.25dB from 20Hz to 20.000Hz 
+ 0, -3.0dB from 10Hz to 100,000Hz

1.4 volts (2.5 volts at gain control center detent)

95dB (115dB below rated output)

0.005% maximum if instantaneous peak power output does not exceed twice the output power rating.

8 ohms, 200
4 ohms, 100

20,000 ohms

Clipping is prevented and THD does not exceed 2% with up to 14dB overdrive at 1000Hz.

120 volts, 50/60HZ, 3.0 amps UL/CSA


Front panel: 17 1/2 inches (44.5cm) wide, by 3 5/8 inches (9.2cm) high.

Chassis: 14 3/4 inches (37.5cm) wide, by 2 3/8 inches (6cm) high, by 14 1/2 inches (36.9cm) deep, (from back of front panel), in- cluding connectors. Panel clearance required in front of the mounting surface is 1 inch (2.54cm).

Glass with special gold/teal nomenclature illumination. Chassis and chassis cover are black.

24 pounds (11 Kg) net; 35 pounds (15.9Kg) in shipping carton.

Click here for a PDF copy of the McIntosh MC7100 Owner's Manual

Our Testing Process for Amplifiers (Solid State) at SkyFi:

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 sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. 

We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.

Final testing involves pushing actual music thorough the amplifier. 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 amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Thanks for looking and please click here if you would like to receive a list of the equipment we receive from time to time.  We promise not to bombard you with junk email.



This item will be professionally packaged and insured for safe transit to your home. 

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.

If we don’t have the original manufacture's packaging, we use heavy duty double ply corrugated boxes with 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. 

This item is available for pickup in Ridgewood, NJ or Union Square, NYC (with convenient parking in the building).

NJ Residents or anyone picking up without a resale certificate will need to pay NJ Sales Tax.

Use the Buy It Now button and we will cover the PayPal fees.

Thanks for looking and be sure to call or text 201.879.0000 with any questions. 

Please also click here to visit our Audiogon store to see the rest of the items we have for sale.



SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of select high-end audio equipment.  We only buy equipment the 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, Pro-Ject Audio Systems, and Sony ES, we have access to OEM parts, service, and support.  If you are local and looking for new equipment from the above-mentioned manufacturers, please drop us a line as we can arrange both sales and professional installation in the tri-state area.


We do not accept or review any offers that do not go through the official Audiogon 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. 

If you do not see a “Make an Offer” button, it means we are not considering any offers on that item.   


We prefer working through PayPal which allows you to use a credit card or bank transfer. We do not charge extra for any payment fees if you purchase the item at the asking price.  You can also send us a personal check (which will need to clear before shipping), certified check, money order, or wire transfer. International clients without access to PayPal should use a bank wire transfer. 

If you are picking up an item we do not accept PayPal.  You must pay in person with cash, certified or bank check, or wire transfer.  If you make a PayPal payment and are picking up the item, it will be returned. 


We accept trade-ins of equal or lesser value under certain conditions.  Simply ask and let us know the exact model, condition, and the accessories that are included (such as the original box, remote, cables, manual, etc.).  We will only consider high-end equipment from mainstream manufacturers such as McIntosh, Mark Levinson, Audio Research, Krell, etc. and will typically pass on displays, projectors, receivers, dated surround processors, and mid-fi equipment of any type.  We will offer a fair value for your equipment, but keep in mind we are running a business and will need to be able to resell the equipment at a profit after investing a great deal of time and resources in testing, certifying, repairing, cleaning, and packaging the incoming equipment.  If you are looking for top dollar we suggest attempting to sell it directly to an end user on your own.

SELL US YOUR GEAR (Working or Broken)

We will also purchase your used or broken gear and arrange pickup if you are in our local market. Just drop us a note for a quote but be sure to include the condition and what is included. 

HOW TO VISIT US                                                                                                        

We are currently operating from a residence in Ridgewood, NJ.  You are welcome to make an appointment if there is a piece of equipment you would like to see in operation before or after purchase.  We have a well-equipped, dedicated listening room with tons of equipment of all makes and models.  We are not a store, so please don’t make an appointment if you are just curious as to how a speaker or piece of equipment sounds.  In essence, no tire kickers please.

If you are in NYC and cannot make it out to Ridgewood, we can arrange pickup in Union Square (14th Street) after the purchase.   You can call or text 201.879.0000 with any questions or to schedule an appointment.  We can also arrange to install, calibrate, and tune the gear in your listening room if you are local to the area.  This is super useful when purchasing large speakers or heavy amplifiers.  It is also great for ensuring your new turntable is setup correctly in its final resting place.  


Questions for the seller
Does this unit have original box and manual?
Thank you for your message. The original box and manual are not included, however please note that we use official McIntosh boxes when we can to ship out all of our McIntosh gear. McIntosh and their factory/shipping are currently closed due to the Pandemic, so if. you read our listing notes we will make appropriate packaging if needed for save transit. You can download a PDF copy of the manual online. Thank you for your question.
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