Willsenton R800i 300B 805 Tube Single-Ended Class A Integrated - Sold

Willsenton R800i 300B 805 Tube Single-Ended Class A Integrated

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Condition: 9/10 with Original Remote Control and with Original Box
Prices: Sold
Calls or Whatsapp: 0122711638 (Mr Lim)
Location: Puchong
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R800i Hand welding point to point, the main circuit adopts shed welding
Two high-end EI type single-ended output transformers with high-end special technology and high-quality 
broadband response made of Z11 iron core.High-voltage power supply and filament power supply independently 
use high-efficiency toroidal, high-power power transformers with Z11 cores and special materials.
Power-on high-voltage delay and mute delay function (about 30 seconds),Use Japanese ALPS high-end potentiometer
The 845 tubes can NOT work on a 805 R-800i amplifier, the 805 tubes can NOT work on a 845 R-800i amplifier. 
They are completely different amplifiers.
What is difference between 845 and 805 tubes? Usually, the 845 tubes have a smooth sound, 
it is good at human voice, very nice sound, but the power is not too high, so, 845 fits the speakers 
are high efficiency. 805 tubes have a high power, so, it work well with most of speakers
(but please don't use 805 at a pair of very high efficiency speakers), and 805 is good at large dynamic musics 
like Symphony, jazz.



Product Description

R800i 805 Features:
Hand welding point to point, the main circuit adopts shed welding
Two high-end EI type single-ended output transformers with high-end special technology and high-quality broadband response made of Z11 iron core.
High-voltage power supply and filament power supply independently use high-efficiency toroidal, high-power power transformers with Z11 cores and special materials.
The front stage uses one 12AX7 and two 6SN7 vacuum tubes; the driving part uses two 300B tubes to amplify the rear stage.
The front stage uses a 5U4G for rectification
The rear stage uses two 845 vacuum tubes for class A single-ended power amplification.
Five groups of signal input A, B, C, (D) BALANCE, E (PREIN) This machine is specially equipped with balanced input function and pure rear stage function
Power-on high-voltage delay and mute delay function (about 30 seconds)
Infrared function remote control
Use Japanese ALPS high-end potentiometer
Easy-to-install plug-in vacuum tube shield
Peripheral power tube bias current adjustment function and power output level meter sensitivity switch

Product parameters:
Rated output power: 48W + 48W (RMS)
Machine frequency response: 12Hz ~ 35kHz (-1.5dB)
Input sensitivity:805 = 300mV
Balance input: 280mV
pure power stage: 1800mV
Input impedance: 100KΩ
Output impedance: 4Ω, 8Ω, 16Ω
Harmonic distortion: 1% (1kHz)
Signal to noise ratio: 90dB
Left and right output balance: <0.5dB
Power consumption: 380W
Vacuum tube: 12AX7 x 1, 6SN7 x2, 5U4G x1, 300B x2, 805 x2
Machine volume: (440 * 410 * 275) mm
Net weight: 42kg
Gross weight: 48kg

https://www.amazon.com/Willsenton-Single-Ended-Integrated-Amplifier-Balanced/dp/B0841J88GH

https://m.aliexpress.com/i/4000833511014.html

https://www.carousell.sg/p/willsenton-r800i-805-300b-1147489542/

https://www.youtube.com/watch?v=bzZodhHMO0Y

https://www.youtube.com/watch?v=k_qDijH8B-Y