Radial Engineering R800 1035 SAT-2 Stereo Audio Attenuator Monitor Controller — main product image

Radial Engineering R800 1035 SAT-2 Stereo Audio Attenuator Monitor Controller

Radial Engineering R800 1035 SAT-2 Stereo Audio Attenuator Monitor Controller

Name: Radial Engineering R800 1035 SAT-2 Stereo Audio Attenuator Monitor Controller
Brand: Radial Engineering
SKU: R800 1035

★★★★★3.8 (8 reviews)

XLR

Passive stereo attenuator and monitor controller that delivers transparent volume control without adding noise or coloration.

$199.99*

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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Radial Engineering SAT-2 is a passive stereo audio attenuator designed to sit between a line-level source, such as an audio interface or DAC, and a pair of powered studio monitors. Its core purpose is deceptively simple: give you a high-quality, physical volume knob that does not degrade your audio signal. Because it is entirely passive, the SAT-2 adds no noise, distortion, or latency, making it an attractive option for engineers and producers who want transparent monitoring control without investing in a full-featured, active monitor controller.

Beyond basic volume attenuation, the SAT-2 includes practical monitoring utilities that streamline daily studio workflow. The Mute switch instantly silences the outputs, handy when taking a phone call or switching tasks. The Dim switch drops the level by a fixed amount for a quick low-volume reference without moving the master knob from your calibrated position. The Mono switch sums the left and right channels, which is invaluable for checking mix translation and phase issues. With both XLR and TRS connections on the inputs and outputs, the SAT-2 integrates easily into virtually any studio setup, delivering essential monitor control in a compact, no-nonsense package from one of pro audio's most respected manufacturers.

Key Features

Passive 2-channel Line-level Attenuator and Monitor Controller

With Master Volume Knob

Mono/Mute/Dim Switches

XLR/TRS I/O

Specifications

Type

Passive 2-channel line-level attenuator and monitor controller

Controls

Master Volume knob, Mono switch, Mute switch, Dim switch

Inputs

XLR and TRS (stereo pair)

Outputs

XLR and TRS (stereo pair)

Design

Fully passive (no power required)

Brand

Radial Engineering

Model

R800 1035

Pros & Cons

👍 Pros

Fully passive design introduces zero noise, coloration, or latency to the audio signal.
Dedicated Mute, Dim, and Mono switches offer essential monitoring functions in a single compact unit.
Dual XLR and TRS connectivity ensures compatibility with a wide range of studio equipment.
No power supply required, simplifying setup and eliminating a potential point of failure.
Compact and solidly built enclosure is well-suited for desktop studio use.

👎 Cons

Can only attenuate signal, not boost it, so it is not suitable if you need to add gain.
Single stereo input means you cannot switch between multiple sources without re-patching.
No headphone output, so a separate headphone amp is still needed for private monitoring.
Volume knob lacks detents or dB markings, making exact level recall difficult.

Frequently Asked Questions

Does the Radial SAT-2 require external power?

No. The SAT-2 is a fully passive device, meaning it requires no power supply or batteries to operate. It attenuates the signal purely through its resistive network, which also means it introduces no additional noise or distortion.

Can I use the SAT-2 to control volume between my audio interface and studio monitors?

Yes, that is its primary intended use. You connect the outputs of your audio interface to the SAT-2's inputs, then run the SAT-2's outputs to your powered monitors, giving you a dedicated physical volume knob for your listening level.

What do the Mono, Mute, and Dim switches do?

The Mute switch silences the output entirely for quick referencing. The Dim switch reduces the level by a fixed amount so you can have a quick low-volume listen without losing your calibrated knob position. The Mono switch sums the stereo signal to a single channel, useful for checking mono compatibility of your mixes.

Does the SAT-2 accept both XLR and TRS connections?

Yes, the SAT-2 features both XLR and TRS connectors on its inputs and outputs, providing flexible connectivity with virtually any professional studio gear.