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McIntosh MC 240 Vintage Hi-Fi Tube Amplifier MC240 Amp For Sale


McIntosh MC 240 Vintage Hi-Fi Tube Amplifier MC240 Amp



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McIntosh MC 240 Vintage Hi-Fi Tube Amplifier MC240 Amp :
$3,550

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McIntosh MC 240 Vintage Hi-Fi Tube Amplifier MC240 Amp ! The Classic American Icon!!! Fully Serviced! Must See!!!!!


    McIntosh MC-240 Sound Quality The McIntosh MC 240 has a time proven track record of longevity and a well know legacy. It is a bold statement of American industrial design, yet its defining aspect is its outstanding sound quality. Its sound is timeless, it defies 50 years of technological progression and is still a first choice among audiophile all over the world. Its sound is downright magical, smooth, and sweet, with the ability to portray the life and emotion of music. Its midrange is pure delight, vocals and instruments are rendered with a naturalness and accurateness that sends a shiver down your spine. Bass is tight and tuneful while high frequencies are delivered it the fullest of detail. The quality of dynamic drive is also amazing. It punches out the music in a lively, exciting way. The MC-240 represents golden era American ingenuity at its finest and is a perfect representation of the “McIntosh sound”. It is a perfect match for horn based and other equally efficient speaker system

  • McIntosh Style As the Harley Panhead helped to define the American motorcycle the MC-240 personifies the American tube amp. Its look is instantly recognizable and is always in style. It is one of the few components that visually express both muscle and class, a perfect parallel to its sound!

  • McIntosh Bifilar Wound Output Transformer The McIntosh Bifilar Wound Output Transformer with unity coupling is so special and unique it received six US government patents. While the patents have expired no other company can replicate this unique process. Mainly because most manufacturers' don't produce their own transformers and the McIntosh transformer manufacturing process is expensive and requires skilled labor. This circuit gives you a basic advantage when you own any McIntosh amplifier, and is a main reason why no other amplifier can sound as pleasing as a McIntosh. The brilliant McIntosh unity coupled circuit gives you the lowest distortion performance from tubes and transformers. You get a reserve built into every McIntosh unit. In the power amplifiers it is not just reserve power, it is the reserve margin of safety for each piece and component used in the power amplifier. Nothing is run to its full limit. Everything is given a great safety margin. This kind of engineering means long life and more performance, a claim that is backed up by a 50 year history!

  • Three Output Configurations At the flip of the switch the MC-240 can change output. It is a standard stereo amp, a twin mono amp (act as two separate 40 watt amps, separate input jacks are provide), and a monoblock effectively doubling the power output to a single channel

  • Fully Serviced & Checked by a McIntosh Authorized Technician Amplifier was gone through, fully tested and serviced by a highly experience McIntosh authorized technician with 40+ years of experience in vintage and high end audio. All power supply capacitors as well as coupling capacitors were replaced along with other time weary components.

  • And Much More!


Power Output Stereo or twin amplifier: 40 watts continuous per channel
Monophonic: 80 watts continuous Harmonic Distortion Less than 0.5% at rated output or less, 20 cycles through 20,000 cycles. Typical performance is 0.3% or less at 20 cycles and 20,000 cycles at full power. Typical performance in the mid frequencies is 0.1% or less at full power. Intermodulation Distortion Less than 0.5% for any combination of frequencies from 20 cycles through 20,000 cycles if instantaneous peak power is below twice the rated power. Phase Shift Less than +6° 20 cycles through 20,000 cycles Frequency Range At rated output:
+0, -0.1 db 16 cycles through 40,000 cycles
+0, -0.5 db 16 cycles through 60,000 cycles
At one-half rated output:
+0, -1 db 10 cycles through 100,000 cycles Noise and Hum 90 db or more below rated output Output Impedance Stereo or Twin Amp: (Isolated from ground) 4 ohms, 8 ohms, 16 ohms (Center tap internally grounded) 600 ohms (One side internally grounded) 300 ohms
Mono: (Isolated from ground) 2 ohms, 4 ohms, 8 ohms, 16 ohms, 32 ohms (Center tap internally grounded) 300 ohms (One side internally grounded) 62 ohms Output Voltage Stereo or Twin Amp: (Isolated from ground) 25 volts (Center tap internally grounded) 140 volts (One side internally grounded) 70.7 volts
Mono: (Isolated from ground) 25 volts (Center tap internally grounded) 140 volts (One side internally grounded) 70.7 volts Internal Impedance Less than 10% of rated load impedance Input Input impedance—250,000 ohms Input sensitivity—0.5 volts to 30 volts through gain control with input switch in MONO or TWIN AMP position. With the switch in the STEREO position, sensitivity is 2.0 volts through a balance control. Power Requirements 105 volts to 130 volts at 50/60 cycles: 145 watts at zero signal output: 270 watts at rated output. The power transformer is tapped for 117 volts and 125 volts. Tube Complement Voltage Amplifier: One 12AX7 (drives both amps)
Phase Inverter:Two 12AU7
Drive Amplifier:Two 12BH7
Cathode Follower Drive: Two 12AX7
Output: Four 6L6GC or 7027A Dimensions Chassis dimensions: 17¼" long x 10¾" wide x 8" high.
Suggested Minimum Mounting Space: 20” Long x 14” Wide x 10” High Weight 56 pounds Unpacked Finish Chromium and Black



As mentioned above amp was gone through by a seasoned professional tech. All power supply capacitors as well as coupling capacitors were replaced along with other time weary components. Amp is set to last a life time. Both channels play strong and loud with no hum or distortion. Cosmetically amp shows some ware. All tubes were tested and are well in the good range. There is no rust or corrosion. There is some paint ware on the transformers and bottom cover. Scratches are evident on the chrome when looking closely. There is a little bit of lettering ware.

This is a sale so it will go to the highest buyer. I specialize in shipping large delicate items and I know what it will take to pack this right. All you have to pay towards shipping, insurance, packaging material, and expert packing is $49.75 to anywhere in the continental U.S. I will also ship this unit World Wide and will only charge the Actual Shipping cost.
Please note: the item pictured is guaranteed to be the actual item you will receive. None of my pictures are taken off other peoples pages or web sites, so offer with confidence - what you see is what you get! PayPal and any other approved payments gladly accepted! (please email for details) Never a handling fee, buyer pays actual shipping as stated above.

International buyers welcome.

Click here to check out my other sales for more great items!


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On Jun-30-11 at 19:52:32 PDT, seller added the following information:

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