Kramer PA-50HZ Power Amplifier (50W at 70/100V)

Kramer PA-50HZ Power Amplifier (50W at 70/100V)

Kramer PA-50HZ Power Amplifier (50W at 70/100V)

Kramer PA-50HZ Power Amplifier (50W at 70/100V)

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Product Highlights

  • Compact 1/4 RU Enclosure
  • 50W Class-D Amplification at 70 or 100V
  • Adjustable Input Level
  • Balanced Stereo Line-Level I/O
  • 3-Pin Terminal Block Hi-Z Speaker Output
  • Front-Panel On & Protect LEDs
  • Convection Cooling
  • Durable Aluminum Construction
  • Cascades with other PA-50HZ Power Amps
  • Includes Power Adapter with Power Cable
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Kramer PA-50HZ Overview

  • 1Description

The Kramer PA-50HZ is a compact power amplifier offering 50W of Class-D amplification for 70 or 100V constant-voltage systems in small- to medium-sized spaces such as conference rooms, classrooms, restaurants, and retail stores. Its aluminum enclosure occupies just 1/4 RU of rack space, and incorporates convection cooling for effective temperature regulation. Wire a stereo source from a mixer or matrix switcher to the balanced 5-pin terminal block input then utilize the 3-pin terminal block for connection to mono high-impedance speakers. A dedicated 5-pin terminal block output allows routing of the PA-50HZ's balanced stereo line-level output to a recording device or another PA-50HZ amp.

The rear panel features an input level attenuator, while the front panel presents dedicated LEDs for indication of power and protection status. The PA-50HZ is powered via the supplied power adapter and power cable.


Enables simple and flexible speaker array installation
Line-level output for cascading, recording, or conferencing scenarios
Small form factor and convection cooling for easy installation
50W of Class-D power into a 70 or 100V line
Balanced stereo I/O via 5-pin terminal block connectors
Mono speaker output via 3-pin terminal block
Ideal for small- to medium-sized meeting spaces, classrooms, and educational facilities
Includes four rubber feet for stable placement
Rack-mountable via RK-1 rack adapter (available separately)
In the Box
Kramer PA-50HZ Power Amplifier (50W at 70/100V)
  • Power Adapter with Power Cable
  • 4 x Rubber Feet
  • Limited 7-Year Warranty
  • Table of Contents
    • 1Description

    Kramer PA-50HZ Specs

    Inputs 1 x 5-Pin Terminal Block (Balanced Stereo Input)
    Outputs 1 x 5-Pin Terminal Block (Balanced Stereo Line Output)
    1 x 3-Pin Terminal Block (Mono Speaker Hi-Z Output)
    Amplifier Class Class-D
    Input Sensitivity Full Power at 1.5 V (+5 dBV)
    Output Power 50 W at 70/100 V
    Voltage Gain Up to 37 dB BTL
    Maximum Input Level +4 dBu
    Maximum Output Level +4 dBu
    Input Impedance 10 kOhms
    Output Impedance 600 Ohms
    Frequency Response Line Output: 20 Hz to 20 kHz (3 dB)
    Speaker Output: 50 Hz to 20 kHz (3 dB)
    Dynamic Range > 120 dB
    Signal to Noise Ratio (SNR) 90 dB (20 Hz to 20 kHz)
    Audio THD + Noise Speaker Output: 0.01% (1 kHz at 1 W)
    Audio 2nd Harmonic 0.00006%
    Power Consumption 48 VDC, 1.2 A
    Power Requirement 48 VDC, 1.36 A
    Operating Temperature 32 to 104°F / 0 to 40°C
    Storage Temperature -40 to 158°F / -40 to 70°C
    Humidity 10 to 90% Relative Humidity (Non-Condensing)
    Cooling Convection Ventilation
    Compliance Safety: CE, UL
    Environmental: RoHS, WEEE
    Enclosure Material Aluminum
    Dimensions (W x D x H) 4.2 x 4.1 x 1.7" / 10.7 x 10.4 x 4.4 cm
    Weight 1.7 lb / 0.8 kg (Approximate)

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