Product Details:
After comparing electronic tubes from multiple brands, the BeiJing6J1+Shuguang 6J4 electronic tube was ultimately selected. After repeated tuning, it was finally finalized. This preamp can make the entire audio system lively and powerful, with clear layers, balanced high and low configurations, large dynamic range, and gentle and sweet sound.
Taiwan made 100K dual potentiometer.
6Z4 electronic tube rectifier.
Multi stage RCRC filtering capacitor, well-known brand coupling capacitor.
1% precision five color ring metal film resistor produced in Taiwan, ensuring good signal-to-noise ratio for preamp.
1.6mm thick double-sided PCB with good current passing performance.
Gold plated RCA, with good conductivity, beautiful and durable appearance
Parameters::
Frequency response: 15Hz-35KHz -1db
Signal to noise ratio: 90db
Input voltage: AC110V/220V
Net weight: 3.5kg
Size: 33 * 18 * 4cm
Magnification factor: 10x 20db
Package list:
1 × Finished 6J1+6J4 Tube preamplifier 
