Presonus Audio electronic M80 instruction

80 Hz Filter.

CONTROLS & CONNECTIONS

Phantom Power is available to each channel input of the M80. The 48 volts is supplied by way of the XLR connector for condenser mics and any other devices requiring continuous power through the XLR input. This power is supplied at a constant level allowing use of all eight inputs for condenser mics without any degradation of audio quality.

PIN 1	GND
PIN 2	+48v
PIN 3	+48v

XLR connector wiring for Phantom Power

Phase Reverse Switch allows the user to invert the polarity of the XLR connector by switching pins two and three. The inversion of the pins of the XLR connector may be necessary to alter the audio phase of two like microphones to compensate for phase cancellation. It may be required that the wiring of a cable’s XLR connector be switched to successfully utilize Phantom power.

-20 dB Pad provides -20 decibels of attenuation with the push of a button. This is a very useful feature for rapidly reducing the level coming into the M80 and thus preventing the input signal from over- modulating (distorting) the input. This may occur due to high output level from a microphone or line device. Padding the input serves to provide increased “headroom” for the operator.

The M80 has an eighty-hertz filter that is activated by engaging the switch on the front panel. This filter (often referred to as a RUMBLE filter) is useful for eliminating extraneous low-end information from the signal being amplified. Frequencies from eighty hertz and below are cut from the incoming signal. This feature is useful in eliminating low frequency noise such as air-conditioning rumble or reducing the sound of footsteps transmitted through the microphone stand into the microphone.

Gain control provides 60dB of gain. The amplifier has inherent gain of 12dB thus delivering a total gain possibility of 72dB.

2 . 3 M A S T E R C H A N N E L

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.