NJW0281 NJW0302 Fully Symmetric Dual Differential hifi Power Amplifier Board HIFI AMP 300W+300W |

NJW0281 NJW0302 Fully Symmetric Dual Differential hifi Power Amplifier Board HIFI AMP 300W+300W |

This is a kit , You need to weld it by yourself 

Assembly NJW0281 NJW0302 Fully Symmetric Dual Differential Power Amplifier Board HIFI AMP 300W+300W

Product Details:
American NJW0281 NJW0302 four pairs of output tubes, the power output of 300W + 300W (total 600W)
Output Power: 300W + 300W (total 600W)
Power input: AC double 20-60V
Protection circuit voltage: 12V to 18V AC Independent
Frequency response: 20Hz-100KHz
Dimensions: 227X111mm
Harmonic distortion: <0.005 10W / 8Ω
Features:
The circuit structure is the most stable fully symmetrical dual differential architecture, the sound quality is very HIFI-shaped, delicate, full, natural dynamic is very good, very good low dive.
Protection circuit is about 2 Omron relay, each channel provides 10A output current
Immersion Gold board using double-sided circuit board, so that the current lower resistance and better conductivity
Main filtering is four hardcover import SAMWHA capacitors, each capacitor has a production code, which is under high pressure safety assurance, Total capacity 40000UF
The highest can work in ac 65 v
Beijing Army Regulation 718 feet of copper resistance, USA ON A42 A92 tube
Package Included:
Assembled amplifier kits   X1