Adastra RS Series 100V Line Slave Amplifier 120W

The RS Series 100V Line Slave Amplifier is a compact, high-efficiency Class-D amplifier designed to expand medium to large-scale public address or background music systems. Housed in a rack-mountable chassis (1U for the 120W model), this amplifier offers flexible input options with both RCA and Euroblock connectors and features a 100V signal input for extending existing 100V installations—perfect for long-distance speaker runs. Its line-level slave output allows for cascading additional RS units, while a 24V mute terminal enables emergency muting from an alert panel. Designed for ease of integration and high reliability, the RS Series delivers stable power to both 100V line and low-impedance speaker systems (switchable on RS121 and RS241), making it ideal for commercial and institutional installations.

Features
Class-D 120W RMS 100V line slave amplifier
1U 19" rack-mountable form factor
Accepts line-level audio via RCA or Euroblock terminals
100V input for extending long-range speaker runs
Cascadable slave output for system expansion
24V contact for emergency alarm mute integration
Switchable 100V or low impedance speaker outputs (down to 2 Ohms on RS121 and RS241)
Efficient and lightweight build for easy installation
Ideal for expanding retail, hospitality, education, and public audio systems

Specifications
Amplifier type: Class-D
Power output (RMS): 120W
Input options: RCA, Euroblock line input, 100V signal input
Output options: 100V line / low impedance (model dependent)
Control: 24V mute trigger input
Cascading: Line-level slave output
Fuse rating: T1A
Rack size: 1U (120W and 240W models), 2U (higher models)
Dimensions: 433 x 267 x 44 mm
Weight: 4.8 kg