Willsenton R8 Kt88/El34 X4 Tube Amplifier Integrated Amp Power Amplifier Headphone Replaceable Basic Meter (Black)

The Model Currently On Sale Is The New Model Upgraded In December 2023. Features Pure Hand-Made, The Whole Machine Is Welded With Scaffolding. Use A Square Power Transformer Specially Developed For This Machine. The Output Transformer Uses Two High Quality Wideband Ei Output Transformers. The Voltage Amplification And Boost Stage Uses A 6Sn7 For Power Supply Filtering. The Voltage Amplification Stage And The Push Stage Use Two Pairs Of 6Sl7 And 6Sn7 Tubes, Respectively. The Rear Stage Uses Four Kt88/6550/El34 Tubes For Class Ab Push-Pull Power Amplification. Triode And Ultra-Linear Selection Are Available. External Independent Bias-Adj Current Display Header. 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 (About 30 Seconds). Select Japanese Alps High-End Motor Potentiometer. Easy-To-Install Plug-In Tube Shield. 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: 100Ko Output Impedance: 4O, 8O Power Supply Voltage: 230V 5% (50Hz/60Hz) ~ 115V 5% (50Hz/60Hz) Machine Volume (400*203*390) (W*H*D) Mm Use Vacuum Tube: 6Sn7*3.6Sl7*2.Kt88*4/6550Eh*4/El34*4 Power Consumption: 310W Net Weight: 26Kg Rated Output Power: 25W+25W (Rms Triode Working State) 45W+45W (Rms Ultra-Linear Working State) (Kt88) 25W+25W (Rms Triode Working State) 40W+40W (Rms Ultra-Linear Working State) (El34)