TO-30B立体声三段均衡前置放大器 Stereo 3-Band eq Preamplifier

本机内置隔离升压电源，保证了信号纯净及动态范围；

由于是隔离电源，也可以车载使用，不用担心共地干扰；

信号处理电路采用了TI NE5532发烧级运算放大器，HIFI高保真低噪音；

具有左右声道平衡调节，音量控制，高中低音三段均衡调节；

开关机静音电路，上电断电时后级几乎没有冲击声。

供电：DC5V

功耗：0.5W

输入输出接口：RCA莲花插座

频率响应：20HZ-20KHZ

放大增益：12db

均衡调节范围：±15db

输入阻抗：50KΩ

输出阻抗：600Ω

旋钮及接口功能：

BALANCE ：左右声道音量平衡调节；

VOLUME：音量大小调节；

LOW、MID、HIGH 分别是低音、中音、高音调节；

IN：立体声音频输入；

OUT：立体声音频输出；

DC5V：供电接口，可使用手机充电头，电脑USB接口，车充，充电宝等。

This machine is equipped with an isolated boost power supply, ensuring the purity of the signal and a wide dynamic range.

Since it is an isolated power supply, it can also be used in vehicles without worrying about common ground interference.

The signal processing circuit adopts the TI NE5532  operational amplifier, which is of high fidelity (HIFI) with low noise.

It has left and right channel balance adjustment, volume control, and three-band equalization adjustment for high, middle and low frequencies.

Mute circuit, no impact sound during startup and shutdown

Power supply: DC5V

Power consumption: 0.5W

Input and output interfaces: RCA phono jacks

Frequency response: 20HZ - 20KHZ

Amplification gain: 12db

Equalization adjustment range: ±15db

Input impedance: 50KΩ

Output impedance: 600Ω

Functions of knobs and interfaces:

BALANCE: Adjusts the volume balance between the left and right channels.

VOLUME: Adjusts the volume level.

LOW, MID, HIGH are respectively for adjusting bass, midrange and treble.

IN: Stereo audio input.

OUT: Stereo audio output.

DC5V： Power supply interface, mobile phone charging head, computer USB interface, car charging, portable power supply, etc. can be used.