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  • Model: Classic No.16.0
  • Shipping Weight: 20kg

The Classic No.16.0 is a latest of top grade vacuum tube ampplifiers launched by Beijing Yushang Electronic Audio Technology Co., Ltd. It embodies the consistent aesthetic principle that Classic products maintain and has further exploration for circuit and exteriority.

Its input stage uses 12AT7 tubes as active pull amplification at high gain, it effectively improves the linearity characteristics, distortion and common-mode rejection ratio etc. The inverter stage uses 6N8P tubes, long-tailed amplifier-inverters. Final stage uses El34 tubes, ultra linearity push-pull amplification, and the triode operating state can be selected through a switch.

The overall system of the No.16.0 has a higher open-loop gain with 45db.Its open-loop characteristics:

Harmonic distortion is less than 1.2%(10W 1KHz),frequency response is 30Hz-75KHz(10W) and wideband absolute noise is 1.2mV. With a so good open-loop characteristic, it lays a well base for low major loop circuit. Therefore, this amplifiers negative feedback is merely 5.72db.

Output transformer is the key for any tube amplifier. The designer of Yushang spent several years in designing and researching the transformer for the No.16.0. The transformers adopts high silicon steel orientation sheets with minimum magnetic induction intensity--1.9T and coupled with special primary secondary winding construction, its technical index proves that it has broken through old standards of output transformers.

Its primary impedance is 5KO,primary inductance is 234H(50Hz), primary leaking inductance is 2.27mH(1KHz-10KHz), primary distributed capacitance is 85P ,frequency response is 5Hz-342KHz(-3db 5V) and primary rising impedance is =56O(1KHz-10KHZ).(Note: the above tested by voltage comparison method). The tested values as above show that this transformer has surpassed certain output transformers, which nowadays are the most excellent brand names in the world.

The No.16.0 has a display system for monitoring tube usage time, the systems core is a piece of eight-bit monolithic device and a five-digit LED display shows the time with the longest displayed time in 99,999 hours. After you turn on the unit, the system can accumulate time and save data during the unit is turned off. It also has the function to turn/off LED and reset. To avoid troubles caused by over-used tubes, the system can be used to monitor the tubes usage time in order to remind users to replace tubes in time.

Final stage has an anode current testing system equipped with a Japanese CLASS 1.5 electromagnetic type round meter and a select switch. So it is easy for users to monitor the operating mode in the final stage.

The ring power transformer of the No.16.0 is 400W, which uses the same silicon steel sheets as its output transformers. It is shaped iron choke coil filtration. The high-tension supply for the input stage adopts auto-tracking electro filter to reduce ripple and raise of the S/N ratio. To assure the complete safety and raise service life, the amplifier is also equipped with high-tension time-lag charge-discharge system.

Both internal components and design give expression to the luxurious and high performance amplifier design.

The exterior is made of 10mm aluminum plates forming a sandwich construction, combining classicality with modernistic style and showing off luxury design.

The sound performance of Classic No.16.0 is precise, comprehensive, full, broadened and elegant. Specifications:

Output Power: 40W(pentode state) 20W(triode state)
Frequency Response: 8HZ-82KHz(10W RMS)
Harmonic Distortion(THD+N): 0.5%(1KHz 12.5W RMS pentode state)
S/N(without weight): 90db
Tubes: 12AT7*2 6N8P*2 EL34EH*4(Russian)
Power Voltage: Customized according to different mains voltage in different countries and regions
Dimensions: 450(W)กม350(D)กม150(H)mm
Net Weight: 20Kg


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