DIY Full DC Class A Preamplifier Board ALPS Potentiometer Kit

DIY Full DC Class A Preamplifier Board ALPS Potentiometer Kit Description

Color: As shown
Material: PC
Description Report Item Details:
Sugden SDA-1 amplification circuit
The full DC line has no coupling or feedback capacitors, and the sound is transparent and pleasant to the ear
Single operation JRC5534DD for core amplification
The output stage adopts Class A design with 10mA Class A current
All components
Using 4 twin field tube inputs
KOA hifi resistor
2mm thick printing plate, 70um thick copper
Using American ALPHA soldering wire for welding
Basic parameters:
Size: 92 * 102mm
Voltage: 12-17.5V
Input impedance: 220K ohms
AP test parameters:
Output effective value: 11.0V
Channel gain: 10.6dB 3.4 times
Signal to noise ratio: 132.5dB is impressive
Dynamic range: 133dB
Channel crosstalk: -97dB
THD distortion: 0.000092% very impressive
THD+N distortion: 0.00027%
Audio bandwidth: 0.039dB
Color: As Shown
Material: PC
Package Contents:
Preamplifier board x 1 (included potentiometer)
Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.