ปรีแอมป์หลอด แนวเสียงหลอด vacuum tube Preamplifier board electronic valve amplifier

WORKING PARAMETERS Working voltage: AC double 12V or double 18V Tube model: 6j1 6j2 compatible with 6ak5 5654 6au6 Number of channels: 2.0 stereo Magnification:About 0.85 time Size: about 68*66*54mm Weight: about 58g The overall design of this product is beautiful, and properly optimized. Connecting between DVD / CD / computer and power amplifier can significantly reduce the "digital flavor" and "transistor sound", making the sound more sweet and soff. New design, all use precision resistance, large capacitance filter, film capacitance coupling. This is a typical electron tube in front of the old burn can be the appropriate details of the repair, very interesting.