Dynacord U120:1 120W Single-Channel Power Amplifier

Dynacord U120:1 is a single-channel power amplifier designed for small to medium-sized installed audio systems. It enables reliable amplification for background music and voice announcement applications in commercial and institutional environments. This makes it ideal for venues where consistent audio performance and dependable operation are critical.

The amplifier operates using a Class D output stage and supports both low-impedance and high-impedance loudspeaker systems. It accommodates 4 ohm, 8 ohm, 70 V, and 100 V outputs while integrating EMG and contact override functions for priority audio handling.

The compact half-rack enclosure allows flexible installation in racks, under counters, or on tabletops. Its control and protection features support continuous operation in everyday installed sound applications.

Key Features

• Multi-Impedance Output Support: Delivers full rated power to 4 ohm, 8 ohm, 70 V, and 100 V loudspeaker systems
• EMG Override Input: Ensures emergency and priority messages are clearly heard
• Contact Override with Chime: Provides attention-grabbing alerts using a two-tone chime
• Integrated High-Pass Filtering: Includes permanently active and switchable low-cut filters for system tuning
• Compact Half-Rack Design: Enables space-efficient installations and side-by-side rack mounting
• Remote Standby Control: Supports remote activation of standby mode to improve energy efficiency

Technical Specifications

Rated Output Power
120 W

Output Stage Topology
Class D

Supported Output Modes
4 Ω
8 Ω
70 V
100 V

Frequency Response
<10 Hz — 22 kHz

Distortion
<1% @ rated output power, 1 kHz

Inputs
1 x Line input
RCA unbalanced stereo to mono
3-pin Eurostyle balanced

EMG Input
Line
100 V

Signal-to-Noise Ratio
>60 dB (flat @ max volume)
>95 dB (flat @ min volume / muted)

Equalization
Bass shelving ±12 dB / 150 Hz — 3 dB (100 Hz)
Treble shelving ±12 dB / 5 kHz — 3 dB (10 kHz)

Filters
LO-CUT permanently active 20 Hz, 12 dB/oct.
LO-CUT switchable 120 Hz, 12 dB/oct.

Power Supply
100 VAC — 240 VAC, 50/60 Hz

Power Consumption
Standby 1.25 W
Idle mode 9 W / 11 W

Cooling Concept
Four-stage fans Off / Slow / Medium / Fast

Operating Temperature
-5°C — 45°C

Enclosure Color
RAL 9017 Traffic black

Weight
5.11 lbs (2.32 kg)

Dimensions (HxWxD), without acessories
(1.74" x 8.6" x 8.57")
44.2 mm x 218 mm x 217.7 mm