McIntosh is one of the most dependable brand names when it comes to high-end audio systems. For years the brand has been recognized by audiophiles throughout the world as equipment that delivers clear and consistent quality in music. McIntosh is probably best known for its amplifiers and preamps, but the company produces many other components and parts for stereo and home theatre.

What are the specs for the McIntosh MX 135?

Frequency Response:
L/C/R/LS/RS/LB/RB: ±0.5dB from 20Hz – 20kHz Sub: ±0.5dB from 20Hz – 140Hz
0.005% Maximum from 20Hz to 20kHz at rated output
Signal to Noise Ratio:
Phono: 86dB below 10mV input High Level: 96dB below rated output
Rated Output Voltage:
2.5V unbalanced outputs (Main) 5.0V balanced outputs (Main)
Maximum Voltage Output:
9.5V unbalanced 19V balanced
Output Impedance:
100 ohms unbalanced 200 ohms balanced
Input Impedance:
Phono: 47k ohms, 65pf High Level: 22k ohms unbalanced, 50k ohms balanced
Sensitivity for Rated Output:
Phono: 5mV High Level: 500mV unbalanced, 1V balanced.
Maximum Input Signal:
Phono: 50mV High Level: 5V unbalanced, 10V balanced
Voltage Gain:
Phono to Tape/VCR Out: 40dB Phono to Output (Main): 54dB High Level to Tape/VCR Out: 0dB High Level to Output (Main): 14dB
Tone Controls:
Bass Control: ±12dB at 30hz Treble Control ±12dB at 10kHz
Power Requirements:
100-240V, 50/60Hz at 65W
Physical Dimensions:
9-7/16" (24cm) x 17-3/4" (45cm) x 18-3/4" (48cm)
31 lbs. (14kg) net, 45 lbs (20.5kg) boxed

What else to know about the McIntosh MX 135?

The MX135 sets new standards for accuracy in a Home Theater System. Performance Features: Balanced Inputs and Outputs: Two pairs of Balanced high level Inputs and an eight channel Balanced Output are provided. • Moving Magnet Phono Input There is a Precision Phono Preamplifier for Moving Magnet Cartridges. • On-Screen and Multifunction Fluorescent Displays A comprehensive On-Screen Display capability makes it easy to perform setup adjustments using the Remote Control. The front panel display indicates volume levels, tuner functions, input selection, operating mode and setup functions. • Automatic Mode Switching with Auto Memory The MX135 Automatically Switches Operating Modes according to the input signal. Zone A will memorize the Preferred Mode settings last used for each input. • Separate Listen and Record Input Selection The 11 Analog A/V Inputs can be retitled for any desired signal sources. Any unused input can be “turned off” so the input selector will skip over it. All six digital inputs can be assigned to any A/V signal source for Zone A. Separate Record and Listen Circuits allow recording of one program source while listening to another. • Latest in Digital Audio Processing The MX135 incorporates the latest technology in digital multi-channel processing, including Dolby Digital EX, Pro Logic IIx, DTS-ES and NEO:6. • LED Channel Status Indicators The MX135 includes twenty-four LEDs on the front panel to indicate what type of operating signals are being received, signal processing mode and the output format chosen. • Pure Stereo Outputs When Stereo Operation is selected for an analog source, pure, unprocessed stereo signals appear at the left and right front outputs. • Adjustable Channel Level and Time Delay A built-in test signal generator allows all eight channels to be calibrated for precise volume levels with either automatic or manual channel switching and can be adjusted for time delay to compensate for different distances from each Loudspeaker to the listening area. • Digitally Controlled Volume and Tone Controls A Precision Tracking Volume Control adjusts all eight channels with tracking accuracy better than 0.5dB. Digitally controlled bass, treble and loudness analog circuits provide a wide range of tone shaping with no loss in traditional McIntosh sonic excellence. • Video Switching with Digital Video Processing Any Composite and/or S-Video Input can be Up-Converted to a Component Video Signal with the built-in Digital Video Processing Circuitry. There is also video switching for all three types of video signals. • External Eight Channel Input An external eight channel signal processor can be connected to these inputs as well as a DVD-Audio Player or Super Audio Disc Player with a built-in processor. • Dual Zone and Additional Expansion The MX135 has the built-in ability to control a separate remote audio/video zone with program selection independent of Zone A, using a dedicated power amplifier and speakers. A rear panel connector is provided to interface with the CR16 Remote Control System to add four additional Remote A/V Zones. • Fiber Optic Solid State Front Panel Illumination The Illumination of the Front Panel is accomplished by the combination of custom designed Fiber Optic Light Diffusers and Light Emitting Diodes (LEDs). This provides uniform Front Panel Illumination, together with the extra long life of the LEDs. • Glass Front Panel The famous McIntosh Illuminated Glass Front Panel ensures the pristine beauty of the MX135 will be retained for many years.

Brief History of McIntosh

Long mapped-to Binghamton New York – the current headquarters and manufacturing center for McIntosh Labs – not many people know the brand was originally launched outside of the Nation’s Capital in Silver Spring Maryland, in 1949. In 1956, the brand built their original facility in New York, according to the official brand website.

Other McIntosh Products We Often Buy

Typically, StereoBuyers purchases mostly used amplifiers, especially the vintage amps and high-end McIntosh models such as the MC202 or MC252, and the C220 preamp, for example. We have also purchased many pre-owned tuners from McIntosh over the recent years, including the MR67 and MR78 models, for example.

StereoBuyers has purchased tens of thousands worth McIntosh brand equipment since 2014, with individual buys ranging from $100 to well over $50,000. If you are moving, ready to upgrade, or have McIntosh equipment you do not or will not be using, why not contact us today to find out if it is worth good money?

If you are interested in selling your used McIntosh equipment to us in the greater NYC area or Colorado, please click here to fill out a Free Quote Form and we will get back to you. If we agree on terms, we come to meet you where you want, and pay cash.

The following images show actual McIntosh equipment purchased by StereoBuyers.