COPY NAP200 Line Pure Power Amplifier 75w*2/8 Ohms 150w*2/4 Ohms

Line characteristics

Refer to UK NAP200 fever circuit

Minimal design, extremely short signal circuit cancels circuits that affect sound quality, sound source switching, etc

The left and right channels are completely independent, reducing crosstalk

Sound characteristics: full and thick medium frequency, mellow voice, low frequency and thick

Materials for production

Sanken tube king 2SC2922 output, thrust equivalent to three pairs of ordinary tubes in parallel 230v/17A/200W/60MHZ

Four 63v10000uF audio frequency heating electrolysis

350w ring transformer, left and right channel independent windings

Small signal line Taiwan Teflon oxygen free copper wire

CMC pure copper Taiwan produced high-quality RCA terminal

Indicator parameters

Signal to noise ratio: 120dB

Noise level: 0.3mV Very low noise

Midpoint voltage: within 1mV

Magnification factor: 28 times, the same as the reference machine, adopts the passive front stage

Output power: 70w/8 Ω&140w/4 Ω

Full load distortion: 0.001% ultra-low distortion, see the following test diagram

Input sensitivity: 700mV

Frequency response: 5-50kHz

Amplifier weight: 10kg

Machine case: 430 * 90 * 300mm full aluminum case, 5mm thick aluminum plate for heat dissipation, static 100mA

The chassis bottom plate adopts 5mm thick aluminum plate for heat dissipation standard 430mm chassis, and the machine is not small

Large Nippon Steel Transformer

The power amplifier uses a main amplifier board, one on the left and one on the right

Distortion when NAP200 outputs 24.5V (8 Ω 75W): 0.004%

NAP200 line downstream AP test

With a load of 8 euros and 800W