HIFI fever level tone board NE5532 front board power amplifier front panel

Description

This is a mature classic design, new optimization, take the elegant route
double-sided Kingboard FR-4 1.6MM plate, each element from the acoustics and aesthetic point of view strictly. Machine without a route
Power section using 7812,7912 dual regulator, two filter, diode parallel high-frequency capacitor design, eliminating harmonics and high frequency noise, power supply voltage: AC dual 12V-18V (replacement Main filter can support higher voltage). The board is designed for high, medium, low and volume four knobs, potentiometers from left to right are: treble - midrange - bass - master volume adjustment control, adjustable wide range, suitable for high and low level Friends - the tuning board signal to noise ratio is very high, the circuit is a classic mature design, without any communication sound, the buyer if the use of streaking, the potentiometer must be grounded, to avoid external interference, it is best installed chassis ground , So absolutely silent - like to play headphones friends, you can also put the output on the headset, it became a high-fidelity headphone amplifier, but also more rich regulatory functions. (Support single-dual AC adapter, does not support single-supply DC)