Willsenton R8 stereo Amplifier tube KT88*4 Integrated Amplifier & Power Amplifier & Headphones amp
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. Shipping to USA ONLY thanks.
Come with Tubes Brand Willsenton (KT88, 6SN7, 6SL7)
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.
Declaration
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 push stage use two pairs of 6SL7 and 6SN7 tubes, respectively.
• The power amp stage uses four KT88/6550/EL34 tubes for class AB single-ended 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:
Frequency effect: 10Hz 40kHz (+/-0.5db)
Total harmonic distortion: 1% (1kHz)
Signal to noise ratio: 91dB
Input sensitivity: 380mv (when Integrated amp input), 820mv (when pure power amp input)
Input impedance: 100KΩ
Output impedance: 4Ω, 8Ω
Rated output power:
25W+25W (RMS triode working state) (KT88, 6550EH or EL34)
45W+45W (RMS ultra-linear working state) (KT88, 6550EH)
40W+40W (RMS ultra-linear working state) (EL34)
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*200*390 mm
Net weight: 26kg
Gross Weight: 30kg
Working Condition: Temperature: 0℃～40℃ Moisture: 20%～80%
Storage Condition: Temperature: -20℃～70℃ Moisture: 20%～90%
