Description

Willsenton R-800i Single Ended Class A Amplifier Vacuum Tube Integrated Amplifier 50W+50W 300B + 805

Description (805 Version):
The R-800i series integrated amplifier uses two 300B tubes to drive various vacuum tubes for single-ended class A amplification. It comprises a dual triode ECC83S and two 6SN7 signal amplification and driving tubes. The pre-stage part employs a 274B tube for rectification, allowing each channel to achieve an output power of 50W.

This series features a dual power transformer design, with the filament using an El-type transformer and the high voltage employing a toroidal transformer design. The output transformers use two wide-frequency El types to achieve a sweet sound. It incorporates a dual protection circuit design, an all-aluminum alloy body for the utmost refinement, handcrafted point-to-point soldering, an external, independent BIAS ADJ current monitoring meter, a 30-second mute delay, original motorized potentiometers for ALPS, an all-aluminum alloy remote control, and balanced amplifier input functionality, allowing for independent preamp signal input.

Advantages:
* The body is made from aviation-grade aluminum alloy
* External independent dB level current display meter and current adjustment points
* High-grade motorized potentiometers made in Japan
* High-end speaker connectors are made in Germany, and CNC-machined copper terminals

Features of R-800i Series:
* Aluminum: The body is made from aviation-grade aluminum alloy.
* 30s Mute Delay: The high-voltage mute delay can effectively protect the vacuum tubes.
* BIAS ADJ: The high-end external, independent BIAS ADJ current display meter.
* Dual Fuses: In this series, we utilize a circuit protection design featuring dual fuses.
* Two Transformers: In this series, we use a design featuring dual transformers and a separate power.
* Additional XLR Input: In this series, we've added the functionality of an additional XLR input.
* Manual Soldering: We employ artisanal hand-soldering techniques to solder each component manually.
* Quality Potentiometers: We use high-grade potentiometers that are made in Japan.
* Power Amp Mode: We have added a power amp function to this series, allowing you to use your preamp.

Sound of R800i Series:
* Classical: This series has made every effort to restore classical music instruments, live performance ambiance and vocal nuances.
* Pop /Contemporary: This series has made the greatest effort to achieve the mid-frequencies and high-frequency vocals needed for pop music.
* Symphonic/ Live: This series makes the utmost effort to reproduce the sound stage and more wider dynamic range of live music faithfully.

Vacuum Tubes of R800i Series:
* We use only high-quality vacuum tubes for our products!
* In the preamp part of this R800i series, we use a Czech made ECC83S and two Soviet-made 6SN7 vacuum tubes. For the rectification part, we use a 274B vacuum tube with a filament design. For the driving and power amp parts, we utilize two 300B vacuum tubes, and two 805/845 vacuum tubes for Class A single-ended power amplification.
* Every component is meticulously hand-wired and soldered, offering effective isolation and shielding. And the body is made of aluminum alloy. In this way, perfection is more fully achieved.

Specifications (805 Version):
* Model: R-800i
* Rated output power: 805 = 50W+50W (RMS)
* Harmonic distortion: 1% (1kHz)
* Frequency response: 12Hz~35kHz (-1.5dB)
* Input sensitivity: 805 = 280mV; balanced input: 280mV; amplifier input: 1800mV
* Input impedance: 100KΩ
* Output impedance: 0Ω, 4Ω, 8Ω, 16Ω
* Signal-to-noise ratio: 90dB
* Left and right output balance: <±0.5dB
* Vacuum tubes: ECC38Sx1, 6SN7x2, 274Bx1, 300Bx2, and 805x2
* Power consumption: 380W
* Net weight: 42kg/92.6lb
* Overall dimensions (WxDxH): 440mm x 410mm x 275mm/17.3" x 16.1" x 10.8"
* Working conditions: temperature: 0°C~40°C; humidity: 20%~80%
* Storage conditions: temperature: -20°C to 70°C; humidity: 20%~90%

Package Included:
* 1 x Amplifier
* 1 x User manual
* 1 x Warranty card
* 1 x Aluminum alloy remote control
* 1 x Power cable
* 2 x Spare fuses

Packaging Details:
* Weight: 50kg