Works voltage:   
Recommend   0-AC18V  0-AC18V          0-AC18V   0-AC18V


Indicator parameters
Signal to noise ratio: 115dB
Full load distortion: 0.001% ultra-low distortion,
PCB size: 163 * 102mm


Line characteristics
Mark JC-2 Fully Symmetric Classic Class A Preamp Line
Full DC line design
Dual - Mono channel design, completely no crosstalk between left and right channels
Fully discrete component design
Sound characteristics: mellow, durable, delicate, crystal clear and transparent


Production materials
All new components
FET differential input     4 pairs of Toshiba brand new K246 J103
Gold sealed TRANSISTOR with high current Class A output can drive headphones
Large capacity filter capacitor ELNA 35V6000uF
ON LM317, LM337 precision voltage stabilization


List is for 1pcs assembeld & tested preamp board.

Every board must be tested  distortion, noise, midpoint, magnification, etc. before shipment, and only after passing the test can it be shipped.