All items guaranteed 100% BRAND NEW in the original edition Box. 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. 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 (about 30 seconds). Select Japanese ALPS high-end motor potentiometer.
Easy-to-install plug-in tube cage cover. 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: 100K Output impedance: 4, 8 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: 6SN71 Voltage amplifier stage Tube: 6SL72 Driver stage Tube: 6SN72 Power vacuum tube: KT884 or 6550EH4 or EL344 (only 1 kind of power tube come, you need to choose) Power supply voltage: 100V, 110V, 115V, 120V, 220V, 230V, 240V 50Hz/60Hz (there is a 230V/115V voltage change-over switch inside of body can work most country around the world) Power consumption: 310W Volume (WHD): 400200390 mm Net weight: 26kg Gross Weight: 30kg Working conditions: Temperature: 0°40°C, Humidity: 20%-80%. Tube amp must connected with speakers before turning ON. Strictly prohibit send signals to amp without connected loads(speakers) or load short circuit when the switch is ON.
Too high or too low power supply voltage does irreversible harm to the amp, preferably less than 5% of the specified voltage. If your mains voltage exceeds this value, often best to use with the AC power supply. Temperature is higher when tube amps working, placing attention to ventilation, cooling. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes.
You should take about 100h time to operate the amp. All tube amplifier used with stereo mode: L(left) and R(right) speakers. Normally there are 6 speaker cable connectors: +8L, +4L, -0L, -0R, +4R, +8R. Example: +8L and -0L are for connecting with your Left 6-8ohms speaker.0R, +4R is for connecting with your Right 4ohms speaker. We are dedicated to offer the best audio-visual. Products at the lowest price to our customers. Bringing great products and customer service. And thus help enriching our customers lives is our ultimate goal. 1 Normal situation: arrive at the destination around 16-35 days. 2 Special circumstances: 35-60 days to reach the destination, special circumstances include: holidays, policy adjustments, remote areas, etc. In general we declare a lower value than real price. Since online shopping uncertainty, so thank u very much for choosing&trusting us. Our service is ready to help u any time, your feedback is extremely important to us.
If you are satisfied, please leave 5 stars positive feedbacks, Its very honored for us to achieve generous authentic assessments and photographs, thx! You can open dispute only when we can't give your a satisfied solution!Then we'll send you the return slip. We apologize for the late arrival during the holiday. The item "Willsenton R8 KT88/EL34 x4 Tube Integrated Amp Power Amplifier Headphone" is in sale since Wednesday, December 18, 2019. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Other TV, Video & Home Audio".
The seller is "hifiaudioamplifier" and is located in guangzhou. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada, Mexico, Australia.