Product Details:
The legendary American CAT-SL-1 circuit not only retains the beautiful and rich sound quality of electronic tubes, but also provides transistor control and low-frequency diving The output impedance is extremely low.
1:) 6Z4/6X4 electronic tube rectification, combined with high-voltage voltage regulator circuit, can not only prevent power on/off impact, but also effectively extend the life of the amplifying electronic tube.
2:) LT1085CP is used to power the filament of the amplifying electronic tube, with stable voltage.
3:) LM317 voltage regulator with low ripple coefficient.
4:) Two 4700uf/25V Nichicon high-capacity filtering capacitors.
Specifications:
Size: W240*H90 * L311mm
Rectified electronic tube: 6Z4 (standard version) * 1 6X4 (upgraded version) * 1
Magnifying tube: 12AU7 (can be replaced with ECC82) 12AX7*2(can be replaced with ECC83) 6D8J (can be replaced with 6N11/E88CC/6922)
Output impedance: 4-8 ohms
Input voltage: DC+45V-0--45V (positive and negative voltages can be selected within the range of 30-60V)
Weight: 4.5kg
Package List:
1 × CAT-SL-1 circuit tube preamplifier




