PA50 Measurement Power Amplifier

PA50 is 2th generation of class AB audio power amplifier designed by BSWA TECH. It is a high performance, 50W audio power amplifier for sound, vibration and general purpose applications that replaced the previous generation product.

PA50 redesign the case and power amplifier circuit to reduce the output noise and enhanced the operational stability. When adjust the gain to the maximum, the A-weighting output noise is only 58uVRMS.Thanks to the class-AB amplifier technology, it has excellent THD+N performance and is ideal for high-precision measurement that requires low distortion.

Product Features

 ● High performance measurement power amplifier based on class-AB amplifier technology

 ● Continuous output power 4Ω: 50WRMS, 8Ω: 25WRMS

 ● SNR: 107dBA

 ● THD+N: 0.012%

 ● Low output noise: 58uVRMS (A-weighting)

 ● Support overload, short-circuit, DC offset, over-temperature and power on time delay

 ● LED level and overload indicator

 ● No cooling fan, no influence to ambient noise


 ● General-purpose measurement power amplifier for loudspeaker

 ● Drive for artificial mouths, impedance tube and other sound source

Technical Parameters
Maximum Output Power (Continuous) 4Ω: 50WRMS, 8Ω: 25WRMS
Maximum Output Voltage 20VPeak
Output Impedance (Typ.) 0.12Ω
Output Noise (Typ.) 200uVRMS (22Hz~22kHz, 8Ω, Gain=0dB);58uVRMS (A-weighting, 8Ω, Gain=0dB)
Output Connector 4mm Banana Socket
Maximum Input Voltage (Input Sensitivity) 1.0VRMS
Input Impedance (Typ.) 8.8kΩ
Input Connector BNC
Frequency Response 10Hz~20kHz (+0dB ~ -0.5dB, 8Ω, 20WRMS)
SNR 96dB (22Hz~22kHz, 1kHz, 8Ω);107dB (A-weighting, 1kHz, 8Ω)
THD+N 0.012% (1kHz, 8Ω, 25W)
Gain (Input Attenuator) -∞~0dB
Overload Indicator Red LED, cut off output when overload
Level Indicator 6 level LED indicator: -19.5dB ~ -1.5dB
Protection Overload, short-circuit, DC offset, over-temperature and power on time delay
Cooling Cooling by shell without fan
Power Supply 220VAC 50/60Hz, IEC Type C13 Connector
Operation Environment -10℃~50℃, 0%RH~95%RH
Dimensions (mm) W270 x H210 x D70
Weight 4.4kg (only power amplifier)

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