Atlas Sound DAT35ST70 – 70V Stereo Attenuator with Decora-Style Plate

Product Overview

The Atlas Sound DAT35ST70 is a 70V stereo attenuator with a single-gang Decora-style plate, designed for level control in distributed constant-voltage audio systems. This autoformer-based volume control provides 27 dB of total attenuation across two stereo channels at up to 35 watts per channel, with a positive-off position and full-power pass-through at maximum. The DAT35ST70 is the stereo counterpart to the AT35D and is the preferred choice for stereo 70.7V zone control in commercial AV installations requiring a clean architectural finish.

Product Description

The DAT35ST70 uses a traditional autoformer design to provide reliable volume control in 25V or 70.7V constant-voltage distributed audio systems. Autoformer-based attenuation maintains system impedance characteristics better than resistive alternatives, preserving audio quality across all attenuation levels. The make-before-break contact design ensures smooth, artifact-free transitions between volume steps without signal dropout. This unit handles 35 watts per channel stereo, providing adequate headroom for most commercial background music and paging zone applications. The Decora-style plate design integrates cleanly with standard commercial electrical environments, and both white and ivory finish options are included in the box to match common wall plate schemes. The single-gang format installs into any standard 2.5" deep electrical outlet box, making it compatible with new construction and retrofit installations alike. Applications include hospitality, corporate offices, retail environments, and healthcare spaces where stereo zone volume control is specified at the wall.

Key Features

• Stereo Autoformer Design — Provides dual-channel level control for stereo 70.7V distributed audio zones.
• 35 Watts Per Channel — Handles commercial background music and paging loads without derating.
• 27 dB Total Attenuation — Wide control range covers quiet ambient to full-volume applications.
• Positive-Off Position — Fully mutes the zone; no bleed-through at minimum setting.
• Make-Before-Break Contacts — Ensures smooth volume transitions without signal interruption.
• Decora-Style Plate Included — White and ivory finish plates included; fits standard single-gang electrical boxes.
• 25V and 70.7V Compatible — Works with both common constant-voltage system standards.
• Single-Gang Format — Installs in standard E.O. boxes 2.5" deep; suitable for new build and retrofit.

Technical Specifications