Features:

• 50W Mono Output for 70V and 100V Systems: Delivers reliable 50 watts of power for distributed commercial speaker systems with stable 70V and 100V operation.
• Compact ¼ Rack, 1U Modular Design: Space-saving chassis allows up to four amplifiers to fit in a single rack space, ideal for scalable installations.
• Efficient Class D Amplification: Energy-efficient performance reduces heat and operating costs while providing clean, consistent output.
• Flexible Input Configuration: Includes 2 line inputs and 1 mic input, allowing background music and paging integration in one unit.
• Source Sharing or Independent Inputs: Expand systems easily by sharing a source across multiple amps or assigning different inputs to separate zones.
• Signal Sensing Auto On and Off: Built-in auto-detect with three-minute delay enables simple automation and energy savings.

The OSD PAX-50 is a compact 50W mono commercial amplifier designed for reliable 70V and 100V distributed audio systems. Built with efficient Class D technology, it delivers consistent performance while minimizing heat and energy consumption.

Its ¼ rack width, 1U form factor allows up to four units to be installed in a single rack space, making it ideal for installations where space and scalability are critical. With flexible input options including two line inputs and one mic input, the PAX-50 supports both background music and paging applications from a single unit.

This amplifier is well suited for offices, retail stores, restaurants, schools, medical facilities, and hospitality environments that require clear, evenly distributed sound across multiple speaker locations.

It can be used as a standalone amp for a single zone or expanded into a multi-zone system by adding additional units with shared or independent inputs. The PAX-50 provides a practical, professional solution for commercial audio systems that need dependable performance and room to grow.

Warning: California's Proposition 65

Warning:  

This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

• Amplifier Type: Class D
• Channel Configuration: Single Channel, Mono
• Output Power: 50W
• Output Modes:
  • 70V ±3V @ 1kHz, THD 1% ±0.5%
  • 100V ±3V @ 1kHz, THD 1% ±0.5%
• Rated Power: 80%, 70V and 100V
• Signal to Noise Ratio: 80dB, 70V and 100V
• THD + Noise: < ±0.05% @ 1kHz, 1W nominal
• Frequency Response: 100Hz to 20kHz, +1dB, -5dB
• Impedance: 18KΩ unbalanced
• Line 1 Input: RCA Stereo, left summed to mono, unbalanced
• Line 2 Input: 3.5mm Stereo, unbalanced
• Mic Input: 1/4 inch balanced input with volume control, external preamp required
• Audio Pre Out: 3.5mm Stereo, line level, unbalanced
• Speaker Output: Phoenix connector
• 12V Trigger Output: GND / 12V Phoenix connector
• Output Selection: 70V / 100V switch
• Input Gain Controls: Independent gain knobs for Line 1 and Line 2
• Master Volume Control: Front panel master volume knob
• Auto Signal Sensing: Yes
• Remote Turn On Delay: 3 seconds
• Auto Shutdown Time: 3 minutes
• External Power Supply: 100 to 240VAC
• Enclosure: Metal chassis
• Certifications: RoHS2, FCC, CE, Plenum
• Optional Accessory: Rack mount kit for 1 or 2 amplifiers
• Dimensions, W x D x H: 6.24 x 10.09 x 1.9 inches
• Weight: 2.97 lbs
• Warranty: 2 Years
• Country of Origin: Taiwan