Willsenton R300B Tube Amplifier 300B*2 Single-ended Class A Integrated Amplifier & Power Amplifier & Headphones amp All in One Open Box(returned goods checked like new)
The Open box item is in USA,Only ship to USA, we can send it in 3 days, and take 4-10 business days about to your door in USA.
The Open box item may will have traces of use but all in good performance. We will be tested and inspected before shipment.Thank you!
Willsenton R300B is an integrated Amplifier, it is a Power Amplifier too (there is a group Power amp input), it is a Headphones amp, too.
Declaration
ONE-YEAR WARRANTY !!!
Features:
Single-ended pure Class A tube Integrated amplifier
The body of Willsenton R300B use classic blue piano paint.
• Pure hand-made, Point to point manual welding.
• Two 5U4G vacuum tubes are used for high-voltage rectification. 1pcs of 6SL7 and 2pcs of 6SN7 vacuum tubes are used for the voltage amplifier and preamp stage.
The power amplifier stage uses two Willsenton custom-made 300B vacuum tubes for single-end Class A power amplification.
• Reasonable internal structure, with fever circuit, high frequency is clear and detailed, full frequency is full, low frequency dynamic is loose and powerful
• Use a square power transformer specially developed for this R300B tube amplifier
• Two wide frequency high-end EI type single-ended output transformers with high-end special
• Provide professional equipment input ports, R300B is equipped with multiple signal input ports, which can facilitate you to connect a variety of audio source signals, so that you can have different audio sources and different experiences
• Brushed aluminum alloy panel, using brushed panel, exquisite workmanship, comfortable feel, high-grade and elegant.
• Gold-plated port, a design that integrates quality and beauty, reduces signal loss, and has good conduction performance; the metal mesh cover can protect the beauty of the electronic tube, making it safer for users.
• 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
• Peripheral power tube bias current adjustment function and power output level meter sensitivity switch
• Negative feedback circuit design
• Use thick silver-plated signal leads
• Headphones output 6.5mm jack
Product specification
Rated output power: 8W + 8W
Machine frequency response: 15Hz-45KHz(±0.5dB)
Total harmonic distortion: 1%
Signal to noise ratio: 90dB
Input sensitivity: 210mv (when be an Integrated amp)
620mV (when be a Power amplifier)
Input impedance: 100k ohms
Output impedance: 4Ω, 8Ω, 16Ω
Headphone output for impedance: 8 ohms - 32 ohms
Power supply voltage: AC 100V - 240V 60Hz/50Hz (100V, 110V, 115V, 120V, 230V,240V version will take 7-14 business days to order). 220v is in stock.
Volume: (W × D × H): 405 * 355 * 200 mm
Vacuum tube: 300B x2, 5AR4 x2, 6SN7 x2, 6SL7x1
Net weight: 23KG
Gross weight: 27KG
Power consumption: 280W
