Magnepan (www.magnepan.com)
HT Products: Speakers

Magnum Audio (www.magnumaudio.com)
HT Products: Amplifiers, Pre-Amps, and Integrated Amps

Manley Labs (www.manleylabs.com)
HT Products: Vacuum Tube Amplifiers, Pre-Amps, and Converters

Marantz (www.marantz.com)
HT Products: Plasma TVs, RPTVs, DLP Projectors, A/V Receivers, Amplifiers, DVD Players, Pre-Amps, Video Recorders, and Remote Controls

Mark Levinson (www.marklevinson.com/)
HT Products: Digital Audio, Processors, Amplifiers, Pre-Amps, and CD Players

Martin Logan (www.martinlogan.com)
HT Products: Electrostatic Speakers

McIntosh Laboratory, Inc. (www.mcintoshlabs.com)
HT Products: Amplifiers, Pre-Amps, Integrated Amps, Surround Processors, Speakers, and Subwoofers

Meridian (www.meridian-audio.com)
HT Products: Amplifiers, Pre-Amps, CD/DVD Players, Speakers, and Surround Processors

Merlin (www.MerlinMusic.com)
HT Products: Speakers

Miller & Kreisel (M&K) (www.mksound.com)
HT Products: Speakers, Subwoofers, and Speaker Systems

Mirage Loudspeakers (www.miragespeakers.com)
HT Products: Speakers, Subwoofers, and Speaker Systems

Mission (www.mission.co.uk)
HT Products: Speakers, Subwoofers, and Speaker Systems

Mitsubishi (www.mitsubishi-tv.com/products.htm)
HT Products: HDTVs, DVD, Receivers, and Satellite Systems

Monitor Audio (www.monitoraudio.com)
HT Products: Speakers, Subwoofers, and Speaker Systems

Monster Cable (www.monstercable.com)
HT Products: Audio/Video Cable

Mordaunt-Short (www.mordaunt-short.com)
HT Products: Speakers