Willsenton R-800i Single Ended Class A Amp Vacuum Tube Integrated Amplifier

  
Willsenton R-800i Single Ended Class A Amplifier Vacuum Tube Integrated Amplifier. Description: 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 (805 Version)/ 30W (845 Version). 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: 12Hz35kHz (-1.5dB) Input sensitivity: 805 = 280mV; balanced input: 280mV; amplifier input: 1800mV Input impedance: 100K? Signal-to-noise ratio: 90dB Left and right output balance.

Specifications (845 Version): Model: R-800i Rated output power: 845 = 30W+30W (RMS) Harmonic distortion: 1% (1kHz) Frequency response: 12Hz35kHz (-1.5dB) Input sensitivity: 845 = 300mV; balanced input: 280mV; amplifier input: 1800mV Input impedance: 100K? Signal-to-noise ratio: 90dB Left and right output balance. Usually it costs about 30USD-50USD. If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days.