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phase reverse switch allows the operator to avoid phase cancellation when identical microphones are used in close proximity to one another. The phase reverse switch also can compensate for different XLR connector hook-ups where pin connections have been inverted.

∙A 20 dB pad is available on each channel for reducing the in-coming signal level. This pad provides a more manageable signal from high output devices giving the operator greater control over the in-coming signal and a much reduced chance of over-driving the input and thereby avoiding distortion.

∙The M80 has +28 dBu of headroom on each channel. This feature gives you a very wide dynamic range and excellent transient response characteristics.

∙A Rumble filter is located on each channel to eliminate low frequency noise. This lets you greatly reduce background noise such as air conditioners or wind noise with the flick of a switch without effecting the desired frequencies.

∙Each channel of the M80 has a Mic/Instrument connector using the Neutrik ® Combo connector. This revolutionary new style connector lets you use either 1/4” phone or XLR connectors in the same female input.

∙The M80 offers a high quality transformer on each channel. These feature an IDSS control (this control adjusts the drain current on the input FET amplifier altering the even harmonic levels of the signal being passed) with an adjustment range of 0% to 100%. The 0% position passes a pure signal. As the control is rotated to the 100% position, the signal’s even harmonic series is boosted giving the signal “warmth” very much like a vacuum tube or analog tape saturation. This remarkable effect gives you the sound of a tube without the headache of uneven performance often encountered with vacuum tube devices ( no tube to pick-up RF or to age and become “microphonic”)

∙The M80 has a stereo mix bus for combining the input signals assigned to the bus using the L/R function switch on the front panel of the M80. A pan knob allows the placement of the selected signal anywhere in the stereo array of the stereo mix bus out-going signal (i.e.- left; left-center; center; right-center or right).

∙Inserting stereo headphones into the jack on the front panel of the M80 enables the user to monitor the signals assigned to the Mix bus. Ample power has been provided to allow the operator to hear the processed signals in loud ambient noise

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Presonus Audio electronic M80 manual E R V I E W
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M80 specifications

The PreSonus Audio Electronic M80 is a noteworthy piece of audio gear that appeals to both professional studio engineers and home recording enthusiasts alike. Renowned for its exceptional quality and versatility, the M80 stands out in the crowded market of microphone preamps.

At its core, the M80 features eight channels of high-end microphone preamplification. Each channel is built around a solid-state design that ensures low noise and a broad frequency response, making it ideal for capturing vocals, instruments, and any sound source with precision and clarity. One of the standout characteristics of the M80 is its ability to deliver crystal-clear audio without introducing unwanted coloration, allowing users to achieve an accurate representation of the source material.

One of the key technological highlights of the M80 is its variable impedance settings. By allowing users to adjust the input impedance, the M80 can be optimized for a variety of microphones, including dynamic, condenser, and ribbon types. This flexibility not only enhances the performance of the microphones but also enables users to tailor the sound to achieve the desired tonal characteristics.

The M80 also features a comprehensive metering system that includes both LED indicators and a built-in level control, giving users precise feedback on their input levels. This ensures that recordings maintain headroom and reduce the risk of clipping, which is crucial in professional environments where every detail matters.

In addition, the M80 incorporates a unique "air" circuit that allows for an enhanced high-frequency response. This feature helps to elevate the clarity and presence of vocals and instruments alike, adding brightness without harshness.

Another important aspect of the M80 is its robust build quality. The chassis is designed for durability, making it suitable for both studio use and mobile recording applications. Its compact form factor allows it to fit seamlessly into any rack setup, while also being lightweight enough for transport.

Overall, the PreSonus Audio Electronic M80 is a powerful and versatile microphone preamp that offers a plethora of features and high-quality audio reproduction. With variable impedance settings, dynamic metering, and an innovative design that emphasizes clarity, it stands as a great choice for anyone looking to elevate their recording capabilities whether at home or in a professional studio setting.
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