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Willsenton R800i 300B 805 Tube Single-Ended Class A Integrated Amp & Power Amplifier with Balanced XLR Input

  • Based on 17 reviews
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Features


  • 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 805 is an integrated Amplifier.
    This is a Power Amplifier too (there is a group pre-amp input).

  • 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 805, 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.

Description

Features: 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 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 805A 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 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 Soft, pure and sleek sound, suitable for listening to various types of music Product parameters: Rated output power: 48 W + 48 W (RMS) Machine frequency response: 12Hz - 35kHz (-1.5dB) Input sensitivity: 280 mV Balance input: 280 mV Pure power stage: 1800 mV Input impedance: 100 Kohms Output impedance: 4 ohms, 8 ohms, 16 ohms Harmonic distortion: 1% (1kHz) Signal to noise ratio: 90dB Left and right output balance: above (+-) 0.5dB Power consumption: 380W Vacuum tube: 12AX7 x 1, 6SN7 x 2, 274B x 1, 300B x 2, 805 x 2 Working conditions: temperature: 0 to 40 degree Celsius humidity: 20% - 80% Storage conditions: temperature: 20 to 70 degree Celsius humidity: 20% - 90% Machine volume: (440 x 410 x 275) mm Net weight: 42kg Gross weight: 48kg Power supply voltage: AC 120V 60Hz/50Hz

Item dimensions L x W x H: 17.32 x 16.14 x 10.83 inches


Voltage: 120 Volts


Manufacturer: Willsenton


Maximum Supply Voltage: 1.2E+2 Volts (AC)


Minimum Supply Voltage: 1.2E+2 Volts


Product Dimensions ‏ : ‎ 17.32 x 16.14 x 10.83 inches; 105.82 Pounds


Item model number ‏ : ‎ Willsenton R-800i 300B 805


Date First Available ‏ : ‎ March 14, 2020


Manufacturer ‏ : ‎ Willsenton


Best Sellers Rank: #120,147 in Musical Instruments (See Top 100 in Musical Instruments) #571 in Guitar Amplifier Tubes


#571 in Guitar Amplifier Tubes:


Customer Reviews: 3.7 3.7 out of 5 stars 17 ratings


Frequently asked questions

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Top Amazon Reviews


  • You need to understand this is a 300B Tube Amp with all benefits and burdens
I have had this for almost 2 years now and in the meantime have added the R8 as well. I have 4 tube amps at the moment and these are the cheapest. These are great amps. Heavy but that is what you want. I strongly urge you to swap out the tubes that come with it and upgrade over time. This amp is as good as the tubes you put in. Currently have WE 300B replicas and these makes this thing sing. Tube amps (good ones) are usually expensive and the price point here is low for the sound. ... show more
Reviewed in the United States on May 8, 2024 by James O. Thoma

  • Huge Hum Noise
I just received the R800i, as soon as put it on noticed a huge hum noise, try it xlr, single ended and as a power amp. I have a true balanced DAC and it will not work with the R800i, the xlr input are not true balanced. It's not my first tube gear, the hum balancer doesn't do anything (the screw diver is missing), will give it a couple of days to see if it miraculous improve, after that will send it back. Not happy at all with this amp. ... show more
Reviewed in the United States on August 7, 2023 by JB

  • Exactly what it should be.
I ordered this just before Christmas. It arrived about three weeks early. Took about a week to get here. It was well packed. Foam inside a box, then another box with foam outside that. It's heavy.. .no joke.. I rebuilt the shelf in the picture with real birch wood to support the weight. The MDF bowed. It's well made. Looks fantastic. Sounds even better. I am running Martin Logan motion 15's which are nothing for this amp. I am using my Marantz as my DAC and only using the PRE-INPUTS on the Willsenton. This allows me to control the volume through the Marantz. The remote on the Willsenton is well made but there is not enough control over volume. (Moves in too large of an increment.) Finally, this thing gets hot. You could easily heat a small room. That's the case with any tube amp though. But if you want something high quality that doesn't break the bank this is it. I think you would have to spend many times this amount to get the warmth that this unit produces. I love listening to John Coltrane, or Kenny Dorham, or even Norah Jones. It's just sooo smoooth... ... show more
Reviewed in the United States on January 16, 2023 by James Martin James Martin

  • A great sounding SET amp with some design flaws
So, first off, the good. The amp sounds fantastic. Much better than the R8 I have. When working properly, it's great. The not so good: After 6 to 12 months, I noticed a channel had stopped working. Turned out to be one of my 300B Gold Lion tubes. Swapped in the Willsenton stock tubes, and the amp would not bias properly. I couldn't get it within the required specs...both channels too high. The bad: There are design issues with this amp. How do I know? Because I sent it to Scott Frankland to get fixed, knowing he would be able to diagnose not just the problem, but any issues with the design. The R800i shares plate voltage nodes between the L and R channels. Because of this, it needs bypass caps. There are none. Scott added 4 caps and a bunch of resistors. Also, there isn't enough filtration for the hum. Scott added more. It's well known that Skunkie Designs took apart the WIllsenton R8 and identified numerous issues. It should be known by more people that the R800i has some as well. And if you spend this much money on an amp, it shouldn't require ANOTHER $600-$800 to address the design/cicuit shortcomings. ... show more
Reviewed in the United States on June 15, 2024 by Erik D.

  • Very very very heavy
Use as intended, great sound, great potential to roll tubes for even better sound. I replaced all the tubes with better sounding units. Psvane Acme series 300B and 805, Sophia Aqua 274B, Psvane CV181, these units greatly improved the character of the music becoming much more lifelike. A greater soundstage with more depth and clarity, the notes have a sustained presence. Vocals now feel like they are in my room, horns are also devine. To this point, I am very impressed. I own Audio Research D 79,SP10, McIntosh MC60 mono blocks, Ampzilla, Precision Fidelity C4, NAD, Willsenton R8, and more ... show more
Reviewed in the United States on November 4, 2022 by Manny J.

  • Vale mucho más del precio pagado
Increíble respuesta en la banda alta, además de una gran claridad, una buena compra!
Reviewed in the United States on March 20, 2024 by Arturo Meza A.

  • Not worth the risk with the questionable quality issues
The right channel did not work from initial power on. These things happen, however the support afterwards is scary, to say the least. They responded to some emails and even connected me with a US based repair center. Both have gone dark and I now I'm trying to find a 3rd party to help me with repairs. ... show more
Reviewed in the United States on August 9, 2024 by CYSON

  • So impressed with this tube amplifier
Very happy with this purchase, great sound quality, notably nicer than my Yaqin Mc-13s push pull tube amp, clean background, no hum or hiss or anything. Great build quality, nice finish, looks top-tier high-end hifi gear! Highly recommended!!!
Reviewed in the United States on December 5, 2021 by julia

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