6N9P+6P6P push-pull tube amplifier
Huaji Audio Stereo Push-Pull Combined Amplifier
Model: ST-6P6P tube amplifier
Output power: 12W×2 (Class A and B push-pull standard connection)
Output impedance: 8ohms, 4 ohms
Frequency response: 28HZ-20KHZ
Input mode: RCA
Input voltage: 115V/230V two voltage connection methods
Using electronic tube: 6N9P (6SL7) × 2 6P6P (6V6) × 4
(Please note: This finished machine is equipped with Shuguang brand 6N9P and 6P6P electronic tubes)
Volume: 185 × 160 × 290 (length × height × depth)
Weight: 8KG (net weight)
Information: There are circuit diagrams and installation instructions
Materials: The materials used in the tube amplifier are all enthusiast components, such as Taiwan's five-color ring high-precision resistors, imported Philips BC capacitors, German Weimar coupling capacitors, power cattle imported from Japan and Z11 chips, output cattle, etc., these enthusiasts The components are value for money.
The 6P6P tube is known as the "mountain and flowing water" and is widely used by major audio manufacturers at home and abroad. It has a very unique side in terms of sound quality and has been praised by many enthusiasts.
This circuit uses DYNACO to design a very clever classic circuit. The 6SL7 (6N9P) one tube has two roles, which is both a voltage amplifier and an automatic balance inverter. The 1K resistor is the finishing touch. This resistor is not only the cathode bias resistor of the 6SL7, but also the secondary of the output transformer. It forms the tail of the phase-inverting stage and is also a loop negative feedback resistor! It saves parts and reduces the additional noise and distortion of parts. The power level is modified to a standard connection structure, which greatly increases the efficiency of the whole machine. After the modification, the output power can reach 12W, which is more suitable for the needs of modern home environment space.
The whole machine uses audiophile-grade electronic components, Taiwan brand resistors, Dutch Philips BC electrolytic capacitors, German Weimar coupling capacitors, Japanese original imported volume potentiometers, power cattle, and output cattle are all imported from Japan Z11 silicon steel sheet, refined The selected fever components make the sound quality of this machine delicate and mellow, especially when listening to human voices, it can reflect the rich details, and the strong scent of the violin can be fully displayed when playing string music, and the treble is clear and transparent. Not harsh, accurate mid-tone, flexible and powerful bass.
