REISONG Boyuu A10 Amplificateur à tube EL34B Amplificateur audio HiFi de classe A à extrémité unique

REISONG Boyuu A10 EL34B tube Amp Single-end Class A HiFi Audio Amplifier Brand new 100% original factory

Version A: PCB standard version, power transformers 96 * 50, 66 * 36 output transformer. When you want to take the time to change the machine, the advantage of low noise. 
Version B: welding by hand upgrade version. Manual welding, preferred audiophiles, the output transformer switch to the higher end of the 76 * 40 output transformer. When low-frequency dynamic playback is good, control and strong, it is more powerful. 
Version C: PCB upgrade version. PCB, output transformer is 76 * 40 output transformer. When low-frequency dynamic playback is good, control and strong, it is more powerful. 
The price is NOT included the tube cage cover. if you need the tube cover, plus extra $20 USD to get it. 

Features: 
Power Transformers: new imported 0.35, stack thickness 50MM (96-50). 
Output transformer core: new imported 0.35 (66*36(standard version)) or (76*40upgrade version). 
Chassis: imported mirror stainless steel chassis. 
Corners aluminum column: high-grade aluminum CNC machining, diamond knife speed car system. 
Output Block: High-grade export base, with a transparent cover. 
6N2J pre-voltage amplification. 
Dawn swallows export EL34B do power output. 
Potting type output transformer, to ensure the stability and reliability of the output transformer, especially in the southern humid places, have a more reliable performance. 
Output transformer with a new imported 0.35 core manufacturing, high-purity copper wire package enameled, layered segmentation, string and connection method, divided into three clips two around the system, 
Output transformer transformer housing with high-grade stretch hood. High temperature paint surface treatment, bright pattern processes. Nissan ALPS potentiometer. 
Imported 0.35 thick core manufacturing power transformers, to ensure adequate power and low temperature rise.

Specifications: 
MAX Output Power: 12W * 2 (Ultra-linear)
Frequency response: 20Hz - 28KHz
Output Impedance: 4,8Ω
Total harmonic distortion: ≤ 1% (1kHz)
SNR: 88dB
Voltage amplification: 6N2J × 2
Power output tube: Psvane EL34 × 2, Also can choose the shuguang EL34B×2
Rectifier tube: 5Z4PJ × 1
Input sensitivity: 750MV
Input impedance: 100KΩ (2 groups input) 
Dimensions (W × D × H): 310 × 268 × 165mm
Power Supply Voltage: AC 100V - 240V / 50Hz-60Hz