McIntoshC-20usedMcIntosh C20 Stereo Tube Preamp In Rare Brass, Collectable and Serviced**Please click here to check out our newly launched SkyFi Audio website with additional items for sale**I’m a big fan of the C20 but I never realized how gorgeous the brass trimmed version is compa...3999.00

McIntosh C20 Stereo Tube Preamp In Rare Brass, Collectable and Serviced

Listing ID: lis9c544 Classified 
 Listed  · 1127 Views
Time Left: 30 Days


Asking Price: $3,999.00

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

Ships fromNEW YORK, NY, 10003
Ships toUnited States
Package dimensionsunspecified
Shipping carrierUPS
Shipping cost$69.00
Agon miniAverage Research Pricing

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

I’m a big fan of the C20 but I never realized how gorgeous the brass trimmed version is compared to the steel.

The green writing on the black glass against the brass metalwork is simply stunning. 

This particular sample came to us as part of a large collection where it sat on the shelf for many years with little to no use. This is reflected in the both the condition and the lack of wear.

If you haven’t heard a McIntosh tube preamp from this era than you owe it to yourself to try it at some point. The simplicity of the design comes through in its sonic signature enveloping the listener in warm, present, yet precise sound. 

There are treble and bass adjustments separate for the phono section versus the line inputs. I had never seen this before in any preamp but it makes total sense.

There is an aural compensation knob which is like an early loudness filter that boosts the frequencies at low volume.

There are two separate phono inputs supporting all sorts of cartridges perfect for an audiophile with two turntables or dual tonearms.

On the back you’ll find a bunch of switched outlets perfect for power controlling a bunch of other vintage gear with a single power switch. 

The unit was fully tested and serviced. All potentiometers were cleaned and lubricated, all tubes were tested on our professional and calibrated BK747 tester, all capacitors were tested for tolerance and leakage and replaced as needed, all bulbs were replaced to ensure long life.

After bench testing the unit was used as the primary preamp in our very well equipped listening room where it performed for weeks without hiccups.

Cosmetically the unit is absolutely gorgeous and in incredible condition considering its age.

The brass trim work around the faceplate has a deep and vintage looking patina. The cabinet looks like it was hand rubbed with oil for 50 years. The glass is clean and the lighting is strong and visible.

Click here for a copy of the original Brochure

Click here for a copy of the original Instruction Manual

Click here for a copy of the original Service Manual

Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.2%
Gain: 60dB (MM), 20dB (line)
Input sensitivity: 2mV (MM), 100mV (ceramic), 250mV (line)
Signal to noise ratio: 85dB (line)
Output: 250mV (line), 2.5V (Pre out)
Dimensions: 15-5/8 x 4-7/8 x 12 inches
Weight: 18lbs
Finish: anodized gold and black

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 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.  


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