Signal amplifier JOJO-JPA1024 multi-channel microphone electroacoustic testing

Size: 235*306*90mm JPA1024 amplifier module is mainly used for electroacoustic testing, which uses the ultra-low noise OP and Class-A circuit to reject the noise from inputs. It supplies power and plays the role of preamplifier for microphone and artificial mouth. Features: ●It has 3 channels for microphone power supply (+24V) ●It has 3 channels for microphone preamp (0dB/20dB/40dB with 0.01% THD) ●It has 3 channels for 20dB amplifier gain (for artificial mouth and speaker) ●Output interface: BNC ●Input interface: BNC Technical Parameters 1. Microphone Preamp and Power Supply ●Gain: 2CH for 0dB-20dB/ 1CH for 20dB-40dB ●Frequency response: 10Hz-20KHz(+/-0.5dB) ●Channels crosstalk: 80dB(20-20KHz) ●THD+N: 0.01% (20-20Khz) ●Input impedance: 2.55KΩ ●Output impedance: 120Ω ●Phantom power supply: 24V ,4mA 2. Power Amplifier ●Gain: 20dB ●Frequency response: 10Hz-20KHz(+/-0.5dB) ●Channels crosstalk: 80dB(20-20KHz) ●THD: 0.003%(20-20Khz) ●Input impedance: 45KΩ ●Output impedance: 4Ω ●SNR: 90dB ●Max output power: 40W(4Ω) ●Max output voltage: 12VAC ●Power supply: AC 220V(optional)