Multichannel Techniques Inc. tube program equalizer. This unit was produced some time in the 1960s in New York, but there is very little documented information online. However, if you have ever used a Pultec or have heard what the classic Pultec sound can do in a mix or master, you know how great this sounds. Killer, solid low end and a very pleasing and forgiving top. The Pultec trick works just as well here. The condition is excellent for its age, but there is some rack rash. Please have a look at the photos.