Phantom Power

Unlike dynamic microphones, condenser microphones need to receive a DC voltage (generally 48v) from an external source before they can generate an output signal. If the condenser mic doesn’t come with its own power supply, then "Phantom Power" must be applied from the pre-amp. Pressing the "Phan" button and engaging phantom power on the DMP3 will send the necessary voltage to both of the XLR Mic Inputs. Phantom power will not affect a dynamic mic adversely, so its okay to have a dynamic mic at the XLR input while phantom power is switched on. Just to be safe, check you mic’s documentation to see if it will accept or needs phantom power.

Balanced vs. Unbalanced Outputs

A "balanced" line runs the signal on two wires of opposing polarity, as a ‘twisted pair’ surrounded by a grounded shield. Doing so, it can send a ‘hotter’ signal over a longer distance with less added noise. Using a TRS (tip-ring-sleeve, sometimes referred to as “stereo”) plug on the 1/4” outputs of the DMP3 will give you this balanced line—tip positive, ring negative, and sleeve ground. Generally speaking, if the DMP3 outputs connect to a system that accepts a balanced line at +4dB (nominal level) operating level, you should use TRS plugs on the outputs.

An unbalanced line on the DMP3 outputs connects to a 1/4” TS (tip positive, sleeve ground) plug on a shielded cable with a single conductor, and is appropriate to use when your sound card or sound system accepts a 1/4” TS plug, RCA plug, or the right or left mono side of a stereo mini-plug. Typically, the signal on unbalanced lines has an operating line level of –10dB (nominal level), though this may vary somewhat.

You may want to consult the user guide of your sound card, recording device or signal processor, mixer, or sound system if you’re not sure what type of signal it can accept. If you need to, find a primer on recording or sound reinforcement to learn more about this and the other subjects covered in this manual.

Warranty Terms & Registration

Warranty Terms

M-Audio warrants products to be free from defects in materials and workmanship, under normal use and provided that the product is owned by the original, registered user. Visit www.m-audio.com/warranty for terms and limitations applying to your specific product.

Warranty Registration

Immediately registering your new M-Audio product entitles you to full warranty coverage and helps M-Audio develop and manufacture the finest quality products available. Register online at www.m-audio.com/register to receive FREE product updates and for the chance to win M-Audio giveaways.

DMP3 User Guide

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M-Audio DMP3 manual Phantom Power, Balanced vs. Unbalanced Outputs, Warranty Terms & Registration

DMP3 specifications

The M-Audio DMP3 is a compact and versatile dual microphone preamp designed to elevate audio recording quality, making it a popular choice among musicians, podcasters, and audio engineers. Known for its affordability and robust performance, the DMP3 offers features that cater to both entry-level users and professional audiophiles.

At the core of the DMP3 are its two high-quality preamps, which utilize discrete transistor technology to deliver an impressive dynamic range and low distortion. This results in clear, high-fidelity recordings that preserve the nuances of any sound source. The preamps boast a gain range of up to 60 dB, providing ample amplification for various microphones, including dynamic, condenser, and ribbon types. The unit supports phantom power, making it compatible with condenser microphones that require additional voltage for operation.

One of the standout characteristics of the M-Audio DMP3 is its exceptional headroom and low noise floor, which allows for capturing clean audio without interference or hiss. The preamps also include a useful -20 dB pad switch, which can be engaged to avoid clipping when recording loud sound sources, such as drums or amplified instruments. This feature ensures versatility in various recording scenarios, from studio setups to live performances.

The DMP3 features balanced XLR output, which minimizes signal degradation and noise interference over long cable runs. This output is particularly useful when connecting to other audio interfaces, mixers, or recording devices. Moreover, the unit is housed in a rugged metal chassis, ensuring durability and portability for those who might be on the go.

The design of the M-Audio DMP3 is user-friendly, with clearly labeled knobs for gain adjustment and easy-to-read indicators for signal presence and clipping. This intuitive layout means users can quickly set up their equipment without getting overwhelmed by complex controls.

In summary, the M-Audio DMP3 combines high-performance microphone preamping with essential features, making it an excellent choice for musicians and audio professionals looking to enhance their recording quality. Its robust design, versatile compatibility, and high-quality output make it a reliable tool for capturing sound with clarity and precision. Whether in a studio or on the road, the DMP3 stands as an essential component in any audio setup.