Product Introduction:
This product uses 6j1 or 6j2 electronic tubes as the front stage driving LM1875 power amplifier, with ear amplifier function. Pass through 6j1 or 6j2. After the electronic tube is buffered, it can significantly reduce the "digital taste" and "transistor sound", giving the entire sound system a sweet and natural "bravery taste", and the sound is sweeter and softer

Performance Parameters:
Output power:20W(maximum 30W)
Speaker impedance:4-8Ω
Total harmonic distortion:<0.04%
Signal to noise ratio:150db
Frequency response:14Hz-100kHz
Power supply voltage: default dual AC 12V/current 3A, power above 60W (maximum voltage cannot exceed dual AC 19V, otherwise the electronic tube point will not light up and the sound will be distorted. If AC 18V is needed, the filament step-down resistance needs to be modified to 47 ohms, and the output power of the power amplifier will be slightly higher at this time)
Ear amplifier/front stage output: Magnification factor is about 0.8 times (the ear amplifier function can be tried to use, which can push sensitive headphones with average thrust. The ear amplifier output can also be used with the current stage function, and the output is connected to push other power amplifiers, with an electronic tube flavor)

Package Type:
All goods will pack into cartons and wrapped full of waterproof tape before shipment.

We can accept customized package to meet different requirements:
1.Every item will separately pack into plastic bag,component,module can be packed in anti static bag.
2.Some fragile products such as the display screen can be packed in bubble bag.
3.Some large machines can be packed in wooden cases.
4.We can label JH code or client's code on package so that customers can check easily after receive goods.