McIntoshMC-2125usedMcIntosh MC-2125 Vintage Solid State Stereo Amplifier**Please click here to check out our newly launched SkyFi Audio website with additional items for sale** One of my favorite amplifiers from this period. Rated at 125W x 2 channels.It's not as big a...1599.00

McIntosh MC-2125 Vintage Solid State Stereo Amplifier

Listing ID: lis9dh7g Classified 
 Listed  · 385 Views
Time Left: 20 Days


Asking Price: $1,599.00

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Contact seller after sale to pay via Certified check, Personal check or Wire Transfer

Ships fromRidgewood, NJ, 07450
Ships toUnited States
Package dimensions?" × ?" × ?" (100.0 lbs.)
Shipping carrierUPS
Shipping cost$99.00
Agon miniAverage Research Pricing

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

One of my favorite amplifiers from this period. Rated at 125W x 2 channels.

It's not as big and heavy as some of its older brothers, but it's right at a sweet spot for powering most vintage speakers from this era.

Typical Mcintosh features such as a glass faceplate that essentially guarantees things will not age over time.  Most amplifiers made with metal faceplates tend to either get scratched up or the writing rubs off over time.  But due to the glass, McIntosh amplifiers and preamps still look amazing even after 30-40 years of use.

This particular piece is a great example, as you can see the glass is pretty much intact and looks like the day it left the factory even through its had some use. Features the beautiful glowing blue meters you've come to expect and love in McIntosh amplifiers.

And one of the nice features about vintage McIntosh is that it looks great even when matched or mixed with current McIntosh.  They kept the same design language so you can mix a modern C48 preamp with this MC2125 vintage amplifier and have it all kind of look cohesive and work well together.  

Simple overall operation, yet you'll find more controls than you would on a normal modern amplifier.  You have individual left and right channel gain controls allowing you to just dial in the amount of gain for each channel. A control for the meters range which lets you pick between -20dB, -10dB, 0 dB, MEASURE, or HOLD a maximum setting.  Corresponding to this control you will see 3 indicators for "WATTS", "HOLD", and "DECIBELS" change on the front between the meters.

There's a speaker output on/off control knob in case you're making adjustments and want to eliminate the connection to the speakers.  A power knob (of course).  And over on the right you'll see the soft clipping features known from McIntosh as their POWER GUARD technology.  Under normal operation this will stay green, then when you've reached the 125W potential maximum output these lights will start to flicker orange letting you know that yo've reached the maximum power output. Yet it will do it conservatively to make sure the amp stays protected.  

On the back you'll see 2/4/8/16 Ohm taps with is also very unique to McIntosh.  They use autoformers on the output stages which allows you to have direct taps to allow the most efficient connection depending on the impedance of your speakers.

On the back there's a convenience outlet to power something from this amp, a switch that allows you to enable/disable POWER GUARD, a stereo/mono mode switch that allows you to switch/bridge into mono around 250-300W for a single channel, and input sensitivity in case you've got a preamp that's a little high or low in this setting.  You can get the most from the potentiometer on your preamp by adjusting this between 2.5 ~ 0.75 volts.

This amplifier can be placed into a McIntosh case.  You'll see the sliding rails on the side with the Panlocs that let you attach this amplifier to the case.  A very cool feature.

This particlular sample is in really nice condition.  The faceplate does not exhibit bubbling of any sort, the top cover work is super clean, there's no rust or scratches or anything of the sort, and more importantly (the achilles heel of these amplifiers) is the chrome-work.  If stored in any damp environment over time (someone's basement or attic), they tend to rust and the chrome starts to pit.  But this example apparently had a very nice life as there's no pitting whatsoever on the chrome.  It's super bright and shiny and in beautiful condition.

Our technicians tested this amplifier in our lab and ran it to its full rated power and watched POWER GUARD function correctly at the full rated output.  And we did a full inspection to make sure there were no capacitors or components that needed replacing.  

This listing includes just the amplifier.

Click here for a PDF copy of the owner's manual


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 646.852.2073 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 646.852.2073 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.  

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.   


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