McIntosh C15 Compact Preamplifier with Phono and Remote - Rare

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Highly capable preamp from the late 1990's that's a great match for the McIntosh MC7100 amplifier we recently in the same size.

A perfect unit to build a McIntosh system around. Best of all it has a built in MM (Moving-Magnet) phono section so you won't need to buy an external phono preamp. It even has a remote control for ultimate convenience.

Simple, well-built, and very reliable.

We did a light service by replacing the bulbs, cleaning the controls, and doing a thorough test on our bench and listening room.

McIntosh Performance Features Include:
• Multiple Inputs
Six high level inputs and one Moving Magnet phono input provide for all popular program sources.

• Tone Control Bypass
At the flat settings the Bass and Treble control circuit elements are removed from the signal path.

• Special Power Supply
Fully regulated power supply with double shielded power
transformer ensures stable noise free operation even though the power line should vary.

Click below to add our recommended matching cables from Kimber Kable, all brand new as SkyFi is an official Kimber dealer.

Kimber Kable - RCA Interconnects

Kimber Kable - Phono Interconnects

The SkyFi Testing Process for Solid State 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.

Specifications
Frequency Response
+0, -0.5 dB from 20 Hz to 20,000 Hz

Total Harmonic Distortion
0.002% From 20 Hz to 20,000 Hz

Signal To Noise Ratio
Phono, 90 dB below a 10mV input, (84d b IHF)
High Level, 105 dB below rated output, (95 db IHF)

Maximum Voltage Output
Phono, 90 mV High Level, 10 V

Output Impedance
600 ohms

Sensitivity
Phono, 2.5 mV for 2.5 V rated output (0.5 mV IHF)
High Level, 250 mV for 2.5V rated output (50 mV IHF)

Input Impedance
Phono, 47 K ohms, 65 pF
High Level, 22 K ohms

Maximum Input Signal
Phono, 90 mV
High Level, 10 V

Tone Controls
Bass Control ± 12 dB @20 Hz
Treble Control ± 12 dB @20 kHz

Power Requirements
120 Volts
50/60Hz at 25 watts

Dimensions
17-1/2" (44.5cm) W
5-3/8" (13.7cm) H
17-1/2" (44.5cm) D (including clearance for rear connectors)

Weight
14.5 pounds (6.6 Kg) net
29.5 pounds (13.4 Kg) in shipping carton

McIntosh C15 Preamplifier - Owner's Manual