The US90 Series Compact 100V Slave Amplifier is a versatile 90W Class D slave amplifier designed for expanding existing 100V line audio systems or powering standalone commercial PA installations. Housed in a compact half-width 1U chassis, the US90 provides a simple and efficient solution for extending distributed speaker systems in retail, hospitality, education and commercial environments.
With dedicated 100V input connectivity, the amplifier can be connected directly in parallel with an existing 100V speaker line, allowing additional speaker zones or power expansion without complex rewiring.
One of the key advantages of the US90 amplifier is its ability to connect directly to an existing 100V speaker line via the dedicated 100V input terminals.
The efficient Class D amplifier design delivers reliable 90W RMS output while maintaining compact dimensions and low heat generation.
The US90 supports both distributed 100V line systems and low impedance 8 Ohm speaker configurations for flexible installation options.
Designed for space-saving installations, the US90 fits into a half-width 1U chassis and includes mounting hardware for rack or surface installation.
Integrated 24V mute contacts allow the amplifier to interface with emergency alarm and evacuation systems for safety-critical installations.
The amplifier supports both standard line-level audio sources and distributed 100V system inputs for straightforward integration.
| Amplifier Type | 100V Slave Amplifier |
|---|---|
| Output Power | 90W RMS |
| Amplifier Design | Class D with Transformer Output |
| Speaker Outputs | 100V Line / 8 Ohms / COM |
| Inputs | RCA Line Input, 100V Euroblock Input |
| Line Output | 2 x RCA (Mono) |
| Mute Control | 24V Relay Contacts |
| Input Sensitivity | -10dB (Line) |
| Input Impedance | 1k Ohms |
| Frequency Response | 100Hz – 18kHz |
| Signal-to-Noise Ratio | 80dB |
| THD | <0.4% @ 1kHz |
| Power Supply | 170–264Vac, 50Hz (IEC) |
| Dimensions | 330 x 210 x 44mm |
| Weight | 2.40kg |
Ideal for retail stores, restaurants, offices, schools, hospitality venues, warehouses, reception areas, public address systems and distributed commercial audio installations requiring additional amplification zones.
The US90 provides a compact and installer-friendly way to expand existing 100V line systems or create independent commercial audio zones. Its direct 100V input capability, compact 1U design and flexible mounting options make it an excellent solution for modern distributed audio installations.
Q: Can the US90 expand an existing 100V speaker system?
A: Yes, the dedicated 100V input allows the amplifier to connect directly in parallel with an existing 100V speaker line for simple system expansion.
Q: Does the amplifier support low impedance speakers?
A: Yes, the US90 supports both 100V line and 8 Ohm speaker configurations.
Q: Can two units be mounted in a single rack space?
A: Yes, the half-width 1U chassis allows two units to be mounted side-by-side within a standard 19-inch rack.
Q: Is the amplifier suitable for emergency evacuation systems?
A: Yes, built-in 24V mute contacts allow integration with compatible fire alarm and emergency override systems.
