The PreSonus PD-70 Dynamic Broadcast Microphone is specifically designed to capture the human voice and improve intelligibility, even in acoustically unfavorable spaces. The cardioid pickup pattern reduces the amount of extraneous and unwanted background noise entering the sides and back of the microphone, focusing on the voices in front-just what you want for podcasts or radio broadcasts.
The all-metal PD-70 is an end-address dynamic microphone with a built-in (but removable) foam wind shield and a simple, compact mechanical design that fits and looks good on even the smallest desks. You can clip the stand to a standard microphone stand or pole and connect a cable to any preamplifier using the XLR output jack with gold-plated pins. It comes ready to use with a built-in gimbal-type stand that allows you to tilt the microphone up or down for precise orientation. Once positioned, it has a single knob to lock it in place.
The PD-70 has a frequency response ranging from 20 Hz to 20 kHz, with boost starting at about 1.5 kHz and extending to 10 kHz. You can hear this little boost in the midrange, especially on small computer speakers, and it lends a certain gravitas and authority to spoken voices. The sensitivity of 1.6 mV/Pa is not bad for a dynamic, although it is much lower than most active microphones (condenser or active ribbon). I had no problem using it directly into an input on my Focusrite preamp and turning up the input gain (the Focusrite’s self-noise is virtually inaudible, even at maximum gain).
The PD-70 has a rather high output impedance of 350 Ω, which means that even with a perfect preamplifier you will notice about 3-4 dB more thermal noise than with the more common 150 Ω dynamic microphone — however, we are still talking about noise in the range of -129 dBv, which is probably less than that of your preamplifier or your room. The maximum SPL is listed at 135 dB SPL, but without a corresponding level of distortion.
If you are a complete beginner and intend for this to be your first purchase, you may be somewhat surprised by the lack of switches on the body of the microphone. However, there is absolutely nothing to worry about. Once you turn the device on via a 48 V phantom power source and connect the XLR to an audio interface, recording will be a breeze. If you have been in the streaming and podcasting world for a while, using this microphone becomes second nature, as it is one of PreSonus’ simplest audio capture devices on the market today.
The included stand with thread adapter allows you to attach the PD-70 to your favorite microphone stand or boom, whether it uses 3/8″-16 or the larger 5/8″-2. This microphone is compatible with many applications such as course narration, online ‘meeting’ platforms like Hangouts, Meet, Skype, Zoom (especially if the user’s mouth is close enough to the microphone), audiobook narration, TV studios, and even radio.