Fully Restored McIntosh MC-2100 105WPC Stereo Power Amplifier (210W Bridged Mono) - Over The Top Restoration, Famous Mac Autoformer Sound & Performance, New Output Transistors!

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Reclaimed Audio Vintage HiFi Restorations
Pflugerville, TX, United States
119
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2015
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About This Listing

For sale is a fully restored McIntosh MC-WPC stereo power amp (bridgeable for 210WPC mono). This amp has a late serial number (we dated it from the parts inside) and is in very nice cosmetic condition! Of course it's sonically flawless as well after our incredibly thorough restoration.

Please study the pics carefully and ask any questions you have! It's cosmetically a very nice unit! Very minor wear on the transformers and some of the chrome but it's incredibly presentable. The knobs were missing so we put on some subtle knobs that match the amp and the originals well.

Details of the INCREDIBLY thorough restoration that we perform on these units can be found below. There aren't many other shops that restore these beautiful old McIntosh amps as carefully and thoroughly as we do! We are happy to take in customer units for restoration as well so feel free to drop us a line if you have a unit you'd like restored to our ultra high standard!

For the electronic restoration, we not only apply all of the important McIntosh recommended updates, we have our own set of upgrades that we apply as well to ensure that these units are rock solid! First and foremost, every single electrolytic and tantalum capacitor was replaced with modern low impedance, high reliability, high temperature Nichicon or similar quality capacitors. The high voltage internal can cap was disconnected and discrete higher rating capacitors were used with a focus on optimizing the filtering quality and minimizing noise. The high voltage power diodes in the power supply were replaced with higher current modern substitutes for ultimate reliability. All output transistors were replaced with the best modern substitutes, sourced from Mouser, and two bad 0.56Ohm were replaced with higher quality parts that have a higher rating. All resistors and sockets in all four output transistor heatsinks were checked and replaced as needed and all new mica/thermal paste was applied.

Then all small signal transistors (which are known to cause problems in these amps) were replaced with lower noise, higher gain modern replacements. Any devices requiring matching are matched to 1% or better tolerances. Both driver cards are rebuilt nearly from the ground up with new carefully selected transistors and diodes that are the same quality, if not better than, the parts that McIntosh themself sells! Absolutely NO NTE parts here!! Everything is the best quality parts available from Mouser so we know EXACTLY where those parts originated and can rely on their quality. Lastly all controls were then cleaned thoroughly and the entire unit was detailed inside and out.

This amp performs WELL BEYOND it's humble 105W rating! It has been tested to put out over 150WPC before it hits the maximum guaranteed THD specifications. These are highly iconic yet undervalued amps with stunning peformance throughout! They have deep, powerful yet controlled bass and incredibly detailed yet never shrill highs. Mids are perfectly balanced. This amp has the autoformers which help the output stage see a consistent loading regardless of your speaker ratings - this is how they're able to maintain such great distortion and bandwidth specifications even under heavily loaded conditions!

We actually used this amp in our shop system for a good month (strapped as a monoblock and paired with our personal MC-2100) as we always do with our restored McIntosh MC-2100 amps. These are hands down our favorite amp to restore and sell for a reason! They perform flawlessly every time they're used after restoration  and never caused an iota of trouble, even when being pushed. It has be carefully detailed multiple times since being installed and is truly a beautiful vintage unit inside and out.

We will package and ship this MC-2100 very carefully - we have shipped many customer restored MC-2100 and other McIntosh units without any issues ever!

Product Specs

Listed3 days ago
ConditionMint (Used)
Mint items are in essentially new original condition but have been opened or played.learn more
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