Group Technologies Australasia Pty Ltd

A microphone of exceptional tonal character, the MT91 represents the ideal combination of qualities found in the world's top classic microphones. Contemporary systems of computer modeling together with traditional tube design practice gives 21st century performance while retaining the warm harmonic qualities that made the old classic models so popular in today's digital domain. Lower noise, more headroom, and better dynamic range along with enhanced durability is what set the MT91 apart in today's broad field of alternatives. The MT91 is assembled from the finest matched components available and each microphone is computer tested with full anechoic test results supplied with each unit. Any finished unit not fully conforming to the strict model is returned for extra attention or rejected. This guarantees that a recording session with one MT91 can be continued with another. The designers of the MT 91 started with a clean sheet of paper and the results speak for themselves. The harmonic tonality is in the class of the most expensive microphones though it is not merely trying to emulate them. Whether vocals or acoustic instruments, the MT91 captures the body and power while still delivering sweet delicate harmonics so difficult to capture on many stringed instruments. This can occur without worrying about super precise placement, as the multi pattern power supply/controller can be adjusted to deal with the most troublesome acoustic environments. The dual-diaphragm vacuum gold spluttered capsule is a modern revitalization of a worthy forerunner. Manufactured to exacting tolerances, only the capsule closely conforming to the blueprint model makes it to a finished product. Lack of attention to this detail is where most studio microphones suffer consistency problems.

When it comes to designing a large format condenser microphone, a good result represents a thoughtful balance of many potentially conflicting issues. Questions such as uniform frequency response between samples, flat response as opposed to sonic color and reliable performance against price were all foremost in the minds of the designers of the Mann M21. The Mann M21 is a stunning example of what is achieved when the right balance has been achieved. To give the M21 the harmonic edge, the Mann engineers reintroduced an old and almost forgotten technology from the earliest days of multi track recording; the audio transformer. This weighty device was replaced in the late 60's by the FET transistor. It was cheaper to build and helped to make the circuits smaller. However a correctly manufactured audio transformer based input stage has a desirable effect on the upper even order harmonic register. The result is sonically satisfying tonal characteristics that are particularly suited to the present day digital recording environment. Features Structural strength was an important priority. Whether in the studio or high stress environments such as outside broadcasting, the M21 is built to a standard of robustness normally associated with products destined for the road. However the high order harmonic sensitivity of the capsule will add uncoloured definition to percussion and stringed acoustic instruments, massed vocal groups and even spoken dialogue applications. The 48 volt powered M21 capsule is a pressure gradient transducers that has been designed to minimise resonance within the diaphram. Rich bass response is a key feature of the M21 sound, but this is not at the sacrifice of defined mid-range. Vocal program is accurate with generous transient capability thanks to the latest in polyester fifer diaphram technology. Like all Mann condenser capsules, Consistent frequency response from sample to sample is at the fore front of industry standards and uniformity is guaranteed.