Willsenton R8 KT88 45W+45W Vacuum Tube Integrated Amplifier Push-pull Power Amplifier (Black)

Willsenton R8 KT88 45W+45W Vacuum Tube Integrated Amplifier Push-pull Power Amplifier (Black)

Description:
The R8 series uses four KT88 vacuum tubes for class AB push-pull power amplification. Additionally, it features two 6SL7 tubes and two 6SN7 tubes for signal amplification and driving. The pre-stage voltage uses a single 6SN7 tube for a filtered power supply, achieving an output power of 45W per channel.

The R8 features handcrafted point-to-point welding construction. The chassis and transformer cover are finished with high-grade piano lacquer for a refined appearance. It includes an external, independent BIAS ADJ current monitoring gauge and a 30-second mute delay. It also has a headphone output, motorized potentiometers for ALPS, full remote control functionality and power amp input, allowing connection to an independent preamp signal input. Additionally, it features an external TUBE SEL for KT88/EL34 vacuum tube switching, offering triode and ultra-linear function selection. In triode mode, the sound is soft, pure, and smooth. Thus, it is suitable for enjoying vocals and string music. In ultra-linear mode, the sound is open, exuberant, and powerful. Therefore, it is ideal for you to appreciate large-scale, dynamic music.

Advantages:
* The body is made from aviation-grade aluminum alloy with piano paint
* The external independent BIAS ADJ current display meter and current adjustment points
* High-grade motorized potentiometers made in Japan
* CNC-machined copper terminals plated with gold are aimed at further noise reduction and upgrades

Features of R8 Series:
* Aluminum: The body is made from aviation-grade aluminum alloy.
* Manual Soldering: We employ artisanal hand-soldering techniques to solder each component manually.
* 30s Mute Delay: The high-voltage mute delay can effectively protect the vacuum tubes.
* Quality Potentiometers: We use high-grade potentiometers which are made in Japan.
* BIAS ADJ: The high-end external, independent BIAS ADJ current display meter.
* Power Amp Mode: We have added a power amp function to this series, allowing you to use your preamp.

Sound of R8 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 dynamic range of live music faithfully.

Vacuum Tubes of R8 Series:
* We use only high-quality vacuum tubes for our products!
* One 6SN7 is used for a filtered power supply for voltage amplification and driving. The voltage amplification and driving stages use two 6SL7 and two 6SN7 tubes. The power amp section employs four KT88 tubes for class AB push-pull power amplification. Every component is meticulously hand-wired and soldered, offering effective isolation and shielding. And its body is finished with piano lacquer, which helps achieve perfection.

Specifications (KT88 Version):
* Model: R8
* Rated output power: 25W+25W (RM transistor working state); 45W+45W (RM ultra-linear working state)
* Harmonic distortion: 1% (1kHz)
* Frequency response: 12Hz~40kHz (±0.5dB)
* Input sensitivity: 380mV (with combined input); 820mV (for amplifier input)
* Input impedance: 100KΩ
* Output impedance: 4Ω, 8Ω
* Signal-to-noise ratio: 91dB
* Vacuum tubes : 6SN7x3, 6SL7x2 and KT88x4
* Power consumption: 310W
* Net weight: 26kg/57.3lb
* Overall dimensions (WxDxH): 400mm x 390mm x 200mm/15.8" x 15.4" x 7.9"
* 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: 30kg