Willsenton R-800i 300B 845 tube Single-ended Class A Integrated Amp & power amplifier with true Balanced XLR input Export version
100% Brand New
Willsenton provide the Special Tailor-Made Export version to us, use the best parts and technology, looks top grade and Luxury.
Willsenton R-800i 300B 845 is an integrated Amplifier.
This is a Power Amplifier too (there is a group pre-amp input).
Declaration
All items guaranteed 100% BRAND NEW in the original edition Box.
ONE-YEAR WARRANTY !!!
Features:
The Export version use the piano lacquer transformer cover that show it very high range.
The Export version use the Special Tailor-Made tube socket for the 845, so, make the tubes very good connect and stronge, tubes get long life and have nice sound.
Hand welding point to point, the main circuit adopts shed welding
Two wide frequency high-end EI type single-ended output transformers with high-end special technology and high-quality broadband response made of Z11 iron core to get the sweet sound.
High-voltage power supply and filament power supply independently use large high-efficiency toroidal, high-power power transformers with Z11 cores and special materials with sweet voice.
High voltage and low voltage dual power transformer, double insurance design, lightning protection and short circuit protection and electronic tube insurance are adopted to prevent the electronic tube from burning the transformer. Level meter and bias meter switching use. Blu ray dual meter design, true full balance input and pure rear stage independent input.
The whole machine is designed with aluminum alloy casing. It adopts imported materials and is tested and inspected in strict accordance with European standards.
The front stage uses one 12AX7(ECC83s)(Brand JJ) and two 6SN7 vacuum tubes; the driving part uses two 300B electronic tubes to amplify the rear stage.
The front stage uses a 274B(fishhook style) 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 function
Power on mute delay function, soft-start feature to prolong tube life (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
Negative feedback circuit design
Soft, pure and sleek sound, suitable for listening to various types of music
Product parameters:
FTC rated output power: 15W+15W (8Ω, 20HZ-20KHZ, THD 1%)
Rated output power: 20W+20W (RMS)
Frequency response of the whole machine: 12Hz-25KHz (-1.5dB)
Input sensitivity: 180Mv (when be an Integrated amp)
: 390Mv (when be a Power amplifier)
Input impedance: 100KΩ
Output impedance: 4Ω, 8Ω, 16Ω
Harmonic distortion: 0.5% (1W/1kHz, rated output power less than 10%)
Signal-to-noise ratio: 88Db (A-weighted)
Left and right output balance: <±0.5dB
Power consumption: 380W
Electronic tube: 12AX7 (JJ ECC83s) × 1, 6SN7 × 2, 274B x 1, 300B × 2, 845 × 2
Working conditions: Temperature: 0℃～40℃ Humidity: 20%-80%
Storage conditions: Temperature: 20°c~70°c Humidity: 20%-90%
Machine volume: (440*410*275)mm (17*16*11 inches)
Net weight: 42kg (92.5LB)
Gross weight: 48kg (106LB)
Power supply voltage: AC 100V to 240V 60Hz/50Hz, 110V, 115V, 220V and 230V version are in stock. 100V, 120V and 240V usually takes 7-14 business days to order.
The 805 tubes can NOT work on a 845 R-800i amplifier, the 845 tubes can NOT work on a 805 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 very 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.
Why does a 845 R-800i amplifier cost high?
Because the tubes 845 cost higher, the others are almost the same.
