The board is finished board (excluding support pillars screw below)， power can be used， amplifier board itself is absolutely quiet， but if you use AC-powered customer， please add， here is a basic tutorial， according to do， you can do to static， such as deep sea
Rectifier and filter capacitor， filter capacitor not less than 4700UF， otherwise power impure influence ratio. Also potentiometer and other exposed elements are preferably connected masking， according to specifications do static， such as deep sea
Parameters index:
DC = 50V， R = 4Ω， THD + N = 10% time， P = 300W
DC = 50V， R = 6Ω， THD + N = 10% time， P = 210W
DC = 50V， R = 8Ω， THD + N = 10% time， P = 160W
DC = 50V， R = 4Ω， THD + N = 1% time， P = 240W
DC = 50V， R = 6Ω， THD + N = 1% time， P = 160W
DC = 50V， R = 8Ω， THD + N = 1% time， P = 125W
Total harmonic distortion (THD + N): <1%
Noise ratio (SNR):> 100dB
Input impedance: 20KΩ
Output offset voltage: <150mV
Voltage gain: Adjustable
Conversion rate (SR): 50V / us
Frequency range: 20Hz - 20kHz
Supply range: DC20 - DC50V
Product Highlights:
Use the AD827 op amp as a preamp， dynamics and excellent detail， the most subtle notes also revealed. Coupled using ELNA brown god series capacitor.
Caution:
The board is a DC power supply， do not enter the exchange directly， use the AC adapter， plug a rectifier bridge and a filter capacitor can be. Also DC power should not exceed 50V， do not lower than 20V， less than 20V will not start. Further output power and supply power relationship， 50V 20V power will be how than four times larger.
2.0 amplifier board using the wiring diagram:
