Both input and output are interface, one set of two-channel audio input, five sets of two-channel output, can be connected to five power amplifiers or active speakers, with gain compensation 3 times amplification (9.5db);
Frequency range: 20HZ-20KHZ
Input impedance: 50K
Output impedance: 600 ohms
Gain: 9.5db

This machine has low noise and high fidelity, and can work stably with power on for a long time
Please use a low-ripple power supply for power supply, the power interface is 5.5 x 2.1 inside positive and outside negative
Color: Black
Material: plastic+metal

Package Contents:
1 x Tone Controller