McIntoshMX-150/151usedMcIntosh MX-150/151 (Updated)UPDATE! The firmware has now been fully updated so this is now effectively an MX151. There is no need to worry about future updating as it now has the latest available from McIntosh Labs Inc. Also,...2850.00

McIntosh MX-150/151 (Updated) [Expired]

no longer for sale

UPDATE! The firmware has now been fully updated so this is now effectively an MX151. There is no need to worry about future updating as it now has the latest available from McIntosh Labs Inc. 

Also, new lower price! Don't let it get away!

McIntosh MX150 7.1 A/V Surround Sound Processor

For sale is this very nice MX150 which has been fully upgraded to the MX151 via firmware and features the 3DHDMI upgrade. 

This unit was tested for functionality by Pyramid Audio in Austin, Tx and came away with no issues.

It comes with the power cord and a proper McIntosh Labs Inc. packing box. (The box is labeled for an MX122). I’m also including a brand new Harmony 650 replacement remote that features a color screen.

It does not have the original manual nor does it have the RoomPerfect microphone, stand or cable. But you can easily get a replacement microphone for about $50 to $100 dollars online and be able to use the outstanding Room Correction function of the MX150, one of the best selling features of this particular unit, all at a fraction of the original price. Here is an example mic that you can use:

For the just the sound processing, home theater sound and room correction features, this is a great way to get a complete McIntosh preamp and get into the McIntosh game. If you want the very latest in video processing, it’s better to just have a dedicated HDMI switcher that feeds into your TV anyway. McIntosh is all about the music (and sound).

The glass is perfect, no chips, bubbles or anything wrong. 

At the top of the front there are two spots that had a scratch on the metal and there was some ink applied to hide it. You can’t even really tell unless you are really looking for it and you are at the right angle of light, not a big deal at all.

The VFD display which, when turned on at first, seems a bit dim. After warming up it gets better and seems fine. But there are still some little areas, depending on the text, that seem slightly dimmer than neighboring text, (even after warming up.) I have included a picture to better show this. It’s strange because usually the VFD displays are known for their longevity and robustness. I was quoted about $500 to have it replaced but it’s not bad enough in my opinion to justify the expense. You can see in the pictures it seems fine but the photos do make it seem brighter than it is in reality. Still, you can see how it’s not that bad.


The vast array of digital and analog inputs can be custom labeled for simplified system operation and matched in volume level for a smooth transition between sources.

Features built-in Dolby® TrueHD and DTS-HD Master Audio™ decoding for the latest Blu-ray disc™ soundtracks. Two channel stereo source materials may be played back in stereo or processed up to 7.1 multi-channel using Dolby Pro Logic® IIx or DTS Neo:6 decoding.

Built-in Dual Zone feature allows operation of two audio / video zones to play different media simultaneously in separate rooms with independent program selection and control.

Assignable balanced input and outputs, analog phono section, bass and treble tone controls, and full RoomPerfect room correction all enhance the two channel audio experience of the MX150.

Two special features with this are the McIntosh built-in RoomPerfect (aka MEN 220) that you get with the purchase of the MX150. The RoomPerfect feature allow rapid and accurate measurement of the user’s room acoustics which allow RoomPerfect to seamlessly integrate the speakers for maximum music and movie sound quality.

The second is that the MX150 supports a complete web-based configuration and control via an internal web application. Connect an Ethernet cable to the MX150 and the processor automatically configured itself onto your home network. Opened a browser, connect to the IP address of the MX150, and there is an application for configuring the MX150. (refer to manual for full set up instructions). This one has had its IP address set to:

(Note: One of the MX150 Zone A Video OUTPUTS must be connected to the video input of a Monitor/TV for viewing the On Screen Menus.)

Specifications: Design: 7.1 Channel SSP

Codecs: Dolby Digital, Dolby Digital EX, Dolby Digital Plus, Dolby TrueHD, DTS, DTS-ES (Discrete, Matrix), DTS 96/24, DTS-HD Master Audio, DTS-HD

High Resolution Audio Precision: 24-Bit/192kHz A/D, D/A

2-Zone Operation

RoomPerfect Automatic Measurement System

Inputs: 5 HDMI, 9 Digital (4 coax, 4 optical, 1 AES/EBU), 11 Stereo ( 9 RCA with Phono stage, 2 XLR), 7.1 Audio, 2 S-Video, 5 Component Video, 2 Composite Video, 1 Ethernet (RJ-45), 1 USB Outputs: 10 RCA and XLR Audio, 1 HDMI, 2 S-Video, 2 Component Video, 2 Composite Video

Dimensions: 7.6″ H x17.5″ W x 15.5″ D

Weight: 31 Pounds

Original MSRP: $12,000

Released in 2010

Feel free to contact me by message or phone any time (day or evening) if you have any questions or want further pictures. 

Shipping: Cost to ship this item within the contiguous United States is a flat rate of $50- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Item will be double boxed. Note that a signature will be required upon delivery.

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