Naim is a very attractive old brand in the UK. The original price of the original machine is tens of thousands. The NAP 200 power amplifier has won the five-star recommendation of the British What Hi-Fi Audio Magazine, which makes people realize the power of this power amplifier , the NAP 200 can carry a low impedance of 2 ohms for long periods of time while delivering 100 watts of output power at 8 ohms.
Most audiophiles feel that it has a British taste, the highs are bright and the mids are full, and the bass is not too domineering, but the vocals are good, the endurance is common, and it has a tube feeling.
The package is divided into two types with main capacitor and without main capacitor. Please confirm the order
PCB size: 155mmx106mm
Supply voltage: AC22X2 to AC33X2
Power output continuous [8 Ohm] 100 Watts
Voltage gain + 29 dB
Input impedance 18 kOhm
Frequency response -3dB @ 2Hz & 65kHz
The debugging is very simple, you only need to adjust the adjustable resistance, so that the voltage drop across the 0.27 ohm 5W white resistance is 20-50MV, and the quiescent current is 100-200MA at this time.
The material is in place, the output power tube is made of 4 Toshiba 2SC5200, the picture is ON, but after comparison, I still think the 5200 voice is good, the current drive tube is ON MJE243 MJE253, the voltage level is the famous British tube ZTX653 ZTX753, the input differential is MPSA18, the feedback capacitor is a tantalum capacitor, the rectification is Sanken 50A, with a perfect Omron protection circuit
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