EQ Equalizer Bluetooth USB Drive Home Hi-Fi Tuning Preamp Stereo High-Mid-Low Frequency Adjustment Dual-Channel  
Detailed Specifications:  
Input Sensitivity: 200mV  
Input Impedance: 47kΩ  
Signal-to-Noise Ratio: >80dB  
Frequency Response: 20Hz–20kHz (±1.5dB)  
Total Harmonic Distortion: <0.01%
Dimensions: 430 mm (W) x 230 mm (D) x 65 mm (H)
Equalization Adjustment Frequencies: 32 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 16 kHz (adjustment range ±12 d