Radial SAT-2 User Guide
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Using the SAT-2™

The SAT-2 is a passive stereo audio attenuator that is designed to provide an easy-access level control wherever you need it most. This page provides an overview of the different features available on the SAT-2 and how to connect it to your audio equipment. For the full user guide, click on the link to the left to download.


The SAT-2 gives you the ability to set your levels or attenuate hot signals wherever you might need to. It works as a monitor controller between an audio interface and a set of powered speakers, or to attenuate the output of a recording console before the signal is sent to a recording device. The SAT-2 can also be connected between line-level studio devices, taming the outputs of a hot microphone preamp to avoid overloading the inputs of a recording interface without losing any tone or character. With its compact and rugged design and useful feature set, the SAT-2 makes for a great addition to your audio tool kit.

Making connections

Before plugging in any cables ensure that your sound system is turned off and all volume levels are turned down. This prevents any plug-in transients from damaging speakers or other sensitive components. The SAT-2 is passive, so it doesn’t require any power to operate. Each input has a ¼" TRS and an XLR connector to accept balanced audio signals from a variety of different sources. For best results, only use one of these connector types at a time on each channel. The XLR outputs are designed to be connected to the line level inputs of a recording console, powered speaker or audio interface.

Setting levels

The SAT-2 is a unity gain device, which means that when the master level control is turned all the way up (fully clockwise) the SAT-2 outputs have the same signal level as its inputs. When first setting levels, start with the volume turned all the way down and then slowly turn back up until you reach a comfortable listening level.

Mono, mute & dim

The MONO switch sums the left and right signals together at each of the outputs allowing you to check for phase compatibility when mixing. You can also use it to take a mono input and split it to two destinations or use it for parallel processing of a mono signal.

The MUTE switch cuts the signal to the XLR outputs, while the DIM switch allows you to temporarily reduce the output level without changing the position of the master level control. The DIM LEVEL sets the amount of attenuation provided when the DIM switch is depressed. Use the DIM to check your mixes at lower volume levels or to talk to other people in the control room without stopping audio playback.