Vintage Tube Amp

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. Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support. This vintage pair of McIntosh MC60 monoblock amplifiers were modified by a hobbyist at some point in the past. One amp has a choke in the power supply, the other does not. The amp without the choke also has some neon bulbs on the tag board as shown in our listing photos. The slight differences in design do not affect the final outcome, as they tested the same in our lab and in our listening tests. Both amps were tested at our bench and fundamentally work. Both were driven into clipping with a 1 kHz sine wave and meet the official McIntosh 60W power specification. Although these amps technically work, we recommend further service/restoration before putting them into daily use. They are both good bones for a restoration, or someone looking to experience the glory of vintage tube monoblocks from McIntosh. During our testing we did notice an intermittent issue where the grid bias of one output tube would drop, causing the associated tube to red plate (not what you want to happen with any tube in operation). This issue was resolved by swapping out the final 12AX7 tube before the output tubes. Please note this listing includes the 2 x MC60 units, along with the vacuum tubes pictured in our images. ELECTRICAL AND MECHANICAL SPECIFICATIONS Specifications for the Mclntosh Model MC-60 Audio Amplifier. 117/125 volts, 50/60 cycles. 280 watts at 60 watts output 155 watts at zero signal output. 5 volts to 30 volts, with gain control Input #2, 2. 5 volts (for use with Mclntosh Audio Compensators and Pre-Amps). 20 to 30,000 cycles ±. 1 db at 60 watts output 16 to 60,000 cycles ±. 5 db at 60 watts output 1.0 to 100,000 cycles ± 1.0 db at 30 watts output. Less than 0.5% at 60 watts output or less, 20 to 20, 000 cycles. Less than 0.5% instantaneous peak power is be- low 120 watts. Noise and Hum Level. 90 db or more below rated output. 12 or better for 4, 8, and 16 ohm output, 16 for 600 ohms. 5 meg for 0. 5 volt input and 0. 13 meg for 2. 5 volt input, 20 cycles to 40 KC. 4, 8, 16, 83 (70.7 volts) and 600 ohms (600 ohm is balanced to ground). ±8° 20-20.000 cycles. Rectifier: 2-5U4GB Pre-Amp: 12AX7 Phase Inverter: 12AU7 Voltage Amp: 12BH7 Driver: 12AX7 Output: 2 KT-88/6550. Designed to power C-4, C-8 and other Mclntosh pre-amplifiers. 14″ x 10″ x 8 high, chassis type construction. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. We accept trade-ins of equal or lesser value under certain conditions. Please visit our website to submit your gear for full consideration. 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’re 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. SELL US YOUR GEAR (Working or Broken). Simply visit our website to submit your gear for full consideration. We are currently operating from our shop inside our dedicated building in Glen Rock, NJ. We have several well-equipped and dedicated listening areas, plus a dedicated listening studio with tons of equipment of all makes and models. We’re not a store, so please don’t make an appointment if you’re just curious as to how a speaker or piece of equipment sounds. In essence – no tire kickers please. This is super useful when purchasing large speakers or heavy amplifiers. It’s also great for ensuring your new turntable is setup correctly in its final resting place. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “skyfiaudio” and is located in this country: US. This item can be shipped to United States.

• Brand: McIntosh
• Type: Tube Amplifier
• MPN: MC60
• Model: MC60
• Country/Region of Manufacture: United States

The Dynaco Stereo 410 is a two channel power amplifier employing all silicon semiconductors. They include 38 transistors, 2 zener diodes, 24 diodes, and 3 thermal sensors. The output circuitry is of the full complementary symmetry design. The entire amplifier, except for an input network, is direct coupled. It’s measured distortion levels approach the threshold of much laboratory test equipment, not only at the commonly specified full power ratings, but more importantly at very low power outputs as well. This is the result of circuit techniques which eliminate any discernible crossover notch at low levels, and contributes to the Stereo 410′s freedom from listening fatigue. It’s accurate, uncoloured sonics have been achieved on a wide variety of loudspeaker loads, including electrostatics and multiple drivers with complex crossovers. The design of a superb power amplifier implies the necessity of several protection techniques for the amplifier, and for the speaker load. In addition to the AC line fuse, four separate B+ fuses are supplied. Electronic volt-amp limiting ensure safe operation of the output transistors, and an independent thermal cut-out for each output stage protects from high temperature. A large radiating area for the heat fins, which are attached to an aluminium back panel, and cooled with a thermostatically operated two speed fan, form a highly efficient heat sink. Speaker fuses protect the load. The Stereo 410 has been designed as two independent 200 watts (into 8 ohms) amplifying channels with a common power supply having a high degree of inherent regulation. In addition, where higher power is required, an extra cost circuit board assembly will be made available to permit monophonic (bridge) operation for 8 and 16 ohm loads. An accessory kit is also planned at additional cost for two output meters and meter switching, which includes an alternative front panel. Power output: 200 watts per channel into 8? Frequency response: 20Hz to 20kHz. Total harmonic distortion: 0.25%. Input sensitivity: 1.6V. Signal to noise ratio: 95dB. Speaker load impedance: 4? Semiconductors: 38 x transistors, 2 x zener diodes, 24 x diodes, 3 x thermal sensors. Dimensions: 17 x 14.5 x 7.25 inches. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “brickaudio77″ and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, Korea, South, Indonesia, Taiwan, South Africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi Arabia, Ukraine, United Arab Emirates, Qatar, Kuwait, Bahrain, Croatia, Republic of, Malaysia, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian Federation.

• Model: Stereo 410
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Featured Refinements: Vintage Stereo Amplifier
• Type: Tube Amplifier
• Brand: Dynaco