Ultra Precision Measurment Amplifier


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- Precision 23W (4Ω) amplifier for all measurement purposes

- Ultra high Bandwidth

- Ultra low distortion

- Ultra low noise

- Three different Gain Modes

- Current and Voltage sense outputs for impedance measurements




More informations available soon!



Physical Lab proudly introduces the Ultra Precision Measurement Amplifier. The amplifier is suited for all kind of ultra-precise measurement demands. The response of the amplifier is flat (± 0,1dB) from DC to 100kHz! The extended bandwidth allows ultra-sonic measurements and makes it an ideal tool for measuring MEMS, microphones and microspeaker with high precision. The amplifier also features additional XLR current and XLR voltage sense outputs for impedance measurements of the DUT. Three selectable gain modes (0dB, 10dB and 20dB) ensure the best range for your requirements.



   0dB Mode  10dB Mode  20dB Mode
Gain  0.0dB 9.9dB   19.8dB
Sensitivity (Input)  9V 3V  1V 
SNR (DC - 20kHz , max Output) 125dB 125dB  122dB 
SNR (fullrange , max Output) 119dB 119dB 116dB
Noise (DC - 20kHz) 4.4uV 5.2uV 16.2uV
Noise (fullrange) 9.2uV 10.8uV 16.2uV
THD+N (1W at 1kHz , 4Ω) 0.0012% 0.0012% 0.0015% 
Dynamic Range AES17 124dB 123dB 121dB
Output Impedance 0.32Ω 0.32Ω 0.32Ω
CMRR (fullrange) >80dB >80dB >80dB
Deviation (20Hz - 20kHz)  < ± 0.01dB  < ± 0.01dB  < ± 0.01dB
Deviation (DC - 100kHz)  < ± 0.10dB  < ± 0.10dB  < ± 0.10dB
Max Output (THD+N <1% , 4Ω Load) 23W 23W 23W