Open box Willsenton R8 KT88x4 Tube Integrated Amp Power Amplifier Headphon

Product Price: Starting at: $1,224.13 USD  $999.00 USDSave: 18% off

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  • Product Model: Model: MUIA9832359
  • Product Weight: Shipping Weight: 30kg
  • Product Quantity: 2 Units in Stock

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Come with Tube cage cover



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Willsenton R8 stereo Amplifier tube KT88x4 or EL34*4 Integrated Amplifier & Power Amplifier & Headphones amp All in One
100% Brand New
In Stock

The Open box item is in USA, we can send it in 3 days, and take 4-10 business days about to your door in USA. Shipping to USA ONLY thanks.

About the old version for Willsenton R8 we have changed the 300uF450V capacitor to 330uF500V. Add 2 Resistors at Bais PCB for each of KT88 to protect KT88 tube once BIAS potentiometer lose efficacy.

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!


































 
 
Declaration


All items guaranteed 100% BRAND NEW in the original edition Box.
• Willsenton R8 is an integrated Amplifier, it is a Power Amplifier too (there is a group Power amp input), it is a Headphones amp too.
• One amplifier can used wiht tube EL34, KT88 or 6550, so, you can get 3 kinds of sound from different models tubes if you buy more 2 new sets of tube.
• Triode and ultra-linear Switchable
ONE-YEAR WARRANTY !!!

Features:
• Pure hand-made, Point to point manual welding.
• Use a square power transformer specially developed for this machine.
• The output transformer uses two high quality wideband EI output transformers.
• The preamp stage uses one 6SN7 for power supply filtering.
• The voltage amplification stage and the driver stage use two pairs of 6SL7 and 6SN7 tubes, respectively.
• The power amp stage uses four KT88/6550/EL34 tubes for class AB Push-pull power amplification.
• Triode and ultra-linear selection are available. The triode works in a soft, pure-and sleek sound, suitable for listening to vocals, strings and other types of music. Ultra-linear working mode, sound-tone open, unrestrained, good momentum, suitable for enjoying big scenes, big dynamics and other types of music.
• External independent BIAS-ADJ current display header. Adjustment and BIAS meter monitoring function keeps the best state of the power tube at all times.
• External EL34/KT88 tube selection function, easy to replace different types of tubes, adding endless fun.
• Infrared full-featured remote control.
• Use thick silver plated signal leads.
• With pure post-level function, it can be connected to independent preamplifier signal input.
• Power on mute delay function, soft-start feature to prolong tube life (about 30 seconds).
• Select Japanese ALPS high-end motor potentiometer.
• Easy-to-install plug-in tube cage cover.

Product parameters:
FTC rated output power : 16W+16W triode (8Ω, 20HZ-20KHZ, THD 1%) (KT88)
: 30W+30W ultra-linear (8Ω, 20HZ-20KHZ, THD 1%) (KT88)
: 12W+12W triode (8Ω, 20HZ-20KHZ, THD 1%) (EL34)
: 28W+28W ultra-linear (8Ω, 20HZ-20KHZ, THD 1%) (EL34)


Output Power rating (not tested under the FTC standard): 23W+23W (RMS triode working state) (KT88)
Output Power rating (not tested under the FTC standard): 45W+45W (RMS ultra-linear working state) (KT88)
Output Power rating (not tested under the FTC standard): 20W+20W (RMS triode working state) (EL34)
Output Power rating (not tested under the FTC standard): 38W+38W (RMS ultra-linear working state) (EL34)
Overall frequency response: 12Hz-40KHz (±1.5dB)
Total harmonic distortion: 0.2% (1W/1kHz, rated output power less than 5%)
Signal-to-noise ratio: 91dB
Input sensitivity: 260Mv ((when be an Integrated amp), 560Mv (when be a Power amplifier) (EL34)
Input sensitivity: 320Mv (when be an Integrated amp), 700Mv (when be a Power amplifier) (KT88)
Input impedance: 100KΩ
Output impedance: 4Ω, 8Ω
Preamp stage power supply filtering Tube: 6SN7*1
Voltage amplifier stage Tube: 6SL7*2
Driver stage Tube: 6SN7*2
Power vacuum tube: KT88*4 or 6550EH*4 or EL34*4 (only 1 kind of power tube come, you need to choose)
Power supply voltage: AC 100V to 240V 60Hz/50Hz, 110V, 115V, 120V, 220V and 230V version are in stock. (there is a 230V/115V voltage change-over switch inside of body), (100V, and 240V version need to take
3-14 business days to order)
Power consumption: 280W
Dimension: (W*H*D): 400*203*390 mm (16*8*15inch)
Net weight: 26kg(57LB)
Gross Weight: 30kg(66LB)
Working Condition: Temperature: 0℃~40℃ Moisture: 20%~80%
Storage Condition: Temperature: -20℃~70℃ Moisture: 20%~90%



This is a vote, the members at Facebook group Willsenton tube amplifier do it.
What power for a solid state amplifier have the same power of Willsenton R8?
What people at Facebook group Willsenton tube amplifier, 50% members are the owner of R8, 50% try to get some info at the group.
Deduct the highest and lowest watts and get average 145.8W, it can serve as a reference value.
(100*15+200*8+50*5+250*4+150*2+300*2)/(15+8+5+4+2+2)=5250W/36=145.8W https://www.facebook.com/groups/2590463257727776/permalink/4152622054845214

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


This product was added to our catalog on Wednesday 05 May, 2021.

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