X-300B dual rectifier single-ended class A combined/pure power amplifier bile machine:

Technical parameter:

Rated output power: 8W+8W(RMS)
Harmonic distortion: 1% (1KHZ) Frequency response of the whole machine: 10HZ~50KHZ(-1.5DB)
Input sensitivity: 150mv(0db) 260 mV (-3db) 420mV(pre in)
Input impedance: 100KΩ
Signal to noise ratio: 89db
Output impedance: 4Ω 8Ω
Weight: 30.0kg
Left and right output balance: <2db
Whole machine power consumption: 155W
Use vacuum tube: 6SL7(Russia)×2, 6SN7(Russia)×2, 300B(Russia)×2 274B*2
Machine volume (W×D×H): (456×346×228)mm
Power supply voltage: ~220/110V±5% (50Hz)
Working conditions: Temperature: 0℃~40℃ Humidity: 20%~80%
Storage conditions: Temperature: -20℃~70℃ Humidity: 20%~90%

Features of this machine:

1, Purely handmade, the whole machine adopts scaffold welding
2. Two high-quality, wide-frequency response and high-sound quality Japanese EI output transformers are used
3. Use high-power Z11 iron core toroidal power transformer specially designed for this machine
4. The voltage part adopts 2 274B for full-ball rectification
5. The front stage uses two 6SL7 (Russia) and 6SN7 (Russia) vacuum tubes, and the rear stage uses two 300B (Russia) vacuum tubes for Class A single-ended power amplification. Fully reflects the delicate, smooth and transparent personality unique to 300B
6. Peripheral power tube current adjustment knob and current display meter
7. Infrared remote control
8. Power-on mute delay function (about 30 seconds)
9. Use Japanese ALPS high-end motor potentiometer
10. Pluggable vacuum tube protective cover for easy installation