Vintage Tube Amp

A Special Amplifier for a Special Discriminating Owner. This McIntosh MC275 is from the 1960s and has been played and treated with the utmost care during its lifetime so far. One would be hard pressed to find another example in as lovely a condition as this amp. It has just now undergone a complete restoration from the countrys premier McIntosh Factory Restoration Center, Absolute Sound Laboratories in Minnesota www. Their work is not only electrically perfect but, as the last three photos in the series show, executed with exceptional craftsmanship and beauty. Absolute Sound Labs has been an authorized McIntosh Service facility since 1969. Recently, McIntosh has limited their own in-house factory servicing of older tube and early solid-state equipment. Absolute Sound Labs was selected as one of a very limited number of McIntosh Service Clinics to handle these issues. Absolute Sound Labs is proud to be so highly regarded by the McIntosh company. We have the necessary technical information, parts and test equipment to restore your McIntosh equipment to like-new condition. A detailed description of their restoration process is presented on their website and includes. Removal of any non-factory modifications to restore the equipment to the condition it was initially designed so that a restoration can be started. Replacement of all electrolytic capacitors with Panasonic FC Gold or Nichicon UUV or UUW, 105 degree devices. Replacement of all coupling capacitors with Panasonic or Secor metal, poly type capacitors. Replacement of all compensating capacitors with Panasonic, Nichicon or Secor Polyfilm devices. Replacement of active semiconductors, where applicable, with new, updated OEM style devices. These devices are specified by several design engineers, such as James Bongiorno, who have experience in the design of audio equipment. Replacement of any other devices deemed to be out of specification. All circuit boards are cleaned of excess rosin and contaminates using industrial grade printed circuit board chemicals to insure the best possible operation of the circuitry. The complete interior is cleaned to remove dust and other collected matter. All mounting screws, where electrical conduction is used, are replaced with new screws to eliminate any possible or intermittent circuit problems caused by oxidation or other contaminates. All applicable adjustments, i. Balance, offset and bias are set to applicable factory specifications where applicable. All cosmetic parts are removed and cleaned, using an ultrasonic cleaning process and/or various, special, industrial cleaning products. Where applicable, panel assemblies and cabinets are sealed in a commercial ultra-thin, clear, unique Hydrophobic Polymer compound to insure that additional deterioration of lettering and detail is minimized. The unit is then re-assembled and all functions are verified to ascertain full functionality. The unit is then placed into a burn-in period which varies from 24 to 48 hours, depending on the type of equipment. Certain equipment is also operated on our Cycler for more intensive burn-in. After burn-in the equipment is then re-assessed to insure that all adjustments and alignments are correct and have not changed. In both operations all replaced, defective parts and a detailed explanation of the work performed are supplied to the Client for the Client’s inspection and review. The technician who restored this amp commented that this is the nicest, cleanest MC275 hed seen in years and that hed rate it a 9/10. There is the normal deterioration of the chrome along the creases in the metal chassis that plagues all Mac amplifiers of this vintage, some lettering on the rear panel has been rubbed off, and a very minor scratch exists on top of one of the transformers. The lettering on the front panel is 100% perfect. Electrically and mechanically it is definitely a 10/10 having had the restoration work done and is good to go for another twenty or thirty years of flawless performance. Included is a lovely selection of audiophile tubes that have plenty of life remaining. Thank you for looking and considering this exemplary McIntosh MC275! The item “McIntosh MC275 1960s Vintage Tube Amp A Beautiful Gem Completely Restored” is in sale since Sunday, March 7, 2021. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “gadgets*505″ and is located in Albuquerque, New Mexico. This item can be shipped to United States.

• Brand: McIntosh
• Model: MC275
• Modified Item: No
• Type: Tube Amplifier
• Country/Region of Manufacture: United States