McIntosh MA6600 Integrated Amplifier 200W! Upgradable + Complete Set

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Great integrated from McIntosh built just before they started including DACs in all their models. This one won't be outdated anytime soon. Has facilities for an optional tuner card in case you'd like to turn it into a receiver.

Some of the best features include balanced CD inputs and jumpers for the pre-power sections, allowing you to turn this into a great preamp one day if you decide to go the separate amplifier route.

The least expensive integrated from McIntosh today would cost you $5,500 and would only deliver 100W. This one is twice as powerful at 200W!

This is a complete set including the manual, remote, power cord and heavy duty official McIntosh double box with a plywood base.

McIntosh MA6600 Integrated Amplifier Owner's Manual

Performance Features:
• Power Output with Patented Autoformer
The MA6600 consists of a 200 watts per channel stereo Power Amplifier with less than 0.005% distortion. The McIntosh designed and manufactured Autoformer allows connection of 2, 4 or 8 ohm Loudspeakers. The Power Amplifier uses Thermal Trak1 Output Transistors for lower distortion and cool operation.

• Electronic Switching and Balanced Connections
The Preamplifier uses Logic Circuits controlling Electromagnetic Switches on all inputs and operating functions for reliable, noiseless, distortion free switching. There is a Balanced Input for connection of source components.

• Power Guard
The patented McIntosh Power Guard circuit prevents amplifier clipping and protects your valuable Loudspeakers.

• Special Power Supply
The large Power Transformer, multiple filter capacitors with 100 Jules of Energy Storage and regulated Power Supply ensures stable noise free operation even though the power line varies.

Specifications:
Power Output
200 watts is the minimum sine wave continuous average power output per channel, both channels operating

Output Load Impedance
2, 4 or 8 ohms

Rated Power Band
20Hz to 20,000Hz

Total Harmonic Distortion
0.005% maximum with both channels operating from 250 milliwatts to rated power, 20Hz to 20,000Hz

Dynamic Headroom
2.0dB

Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz

Preamplifier Output 1 and 2 (for rated input)
1.4V unbalanced (8V Maximun)

Sensitivity (for rated output)
High Level, 250mV unbalanced, 500mV balanced
Phono, 2.5 mV
Power Amp In, 1.4V

Signal To Noise Ratio (A-Weighted)
High Level, 92dB below rated output
Phono, 84dB below 5mV input
Power Amplifier, 115 below rated output

Intermodulation Distortion
0.005% maximum, if the instantaneous peak power is 400 watts or less per channel with both channels operating for any combination of frequencies from 20Hz to 20,000Hz

Wide Band Damping Factor
Greater than 40

Input Impedance
High Level, 20K ohms
Phono, 47K ohms; 65pF
Power Amp In, 10K ohms

Maximum Input Signal
High Level, 8V unbalanced, 16V balanced
Phono, 80mV
Power Amplifier In, 16V

Preamplifier Output Impedance
220 ohms

Power Guard
Less than 2% THD with up to 16dB overdrive at 1,000Hz

Voltage Gain
High Level to Rec Output: 0dB
High Level to Output 1 and 2: 15dB
Phono to Rec Output: 40dB
Phono to Output 1 and 2: 55dB
Power Amplifier: 29dB

Tone Controls
Bass Control ±12dB (1dB steps) @ 30Hz
Treble Control ±12dB (1dB steps) @ 10,000Hz

Overall Dimensions
Width is 17-1/2 inches (44.45cm)
Height is 7-5/8 inches (19.37cm) including feet
Depth is 22 inches (55.88cm) including the Front Panel, Knobs and Cables

Weight
75 pounds (34.1 kg) net, 93 pounds (42.3 kg) in ship- ping carton

Shipping Carton Dimensions
Width is 29-1/2 inches (74.93cm)
Depth is 29 inches (73.66cm)
Height is 17 inches (43.18cm)

The SkyFi Testing Process for Integrated Amplifiers:

We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage.

We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.

Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.