Features: 5-band EQ preamplifier: adopt 5PCS JRC4558 op amp, each one is responsible for one frequency band and process the audio signal independently. 5-band separate control knob, easily to control and set the freqency range as you like.
Bypass design suits more use: with bypass button to turn off EQ preamplification, the audio signal will output from IN to OUT directly without any processing, convenient to enjoy sound.
Attractive looking and powerful design: case and PCB panel, knurled knob, all I/O interfaces are gold-plated to ensure the tight connection and smooth transmission of the audio signal and minimizes the loss of the signal.
Mini size and powered by DC 5V: compact design easy to carry, convenient to use in most scenarios, no need to bring a separate power supply, very suitable for daily needs of most users.

Paramters:
Audio input: stereo RCA / 3.5mm AUX
Audio output: stereo RCA / 3.5mm AUX
Input impedance: 50KΩ
Output impedance: 47Ω
Frequency response: 5Hz-154kHz
THD: 0.003%@1KHz
EQ Bands: 100Hz, 400Hz, 800Hz, 4KHz, 10KHz
Bypass function: support
Working voltage: DC 5V (≥500mA)
Power interface: USB (type-C)
Material: Plastic + metal
colour: As shown

Package Contents:
1 x EQ5 Preamp
1 x USB Cable (type-C)
4 x Rubber Feet mats

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.