Muzishare X7 KT88 Tube Amplifier Class A

Technical Parameters: -Rated output power: 25W + 25W (RMS triode mode) 45W + 45W (RMS ultra-linear mode) -Headphone output power: 300ohm with 900mW, use 270 like a basic divide to calculate the output power, for example 270/300ohm=0.9w for 300ohm headphone, 270/32ohm=8.5w for 32ohm headphone -Input impedance: 100KΩ -Output Impedance: 4Ω-8Ω（6） -SNR: 92dB -Output balance of the left and right: <0.5db -Input Sensitivity: 280mV; 520mV (pre input) -Harmonic distortion: 1% (1kHz) -Frequency Machine: 15Hz ~ 30kHz (-1.5dB) -Anode voltage: about 420v -Net weight: 22.5k -Package weight: 25kg -power consumption: 260W -Vacuum tube are Special Customized: Preamp tube: 12AX7 × 1(Equivalant ECC83,CV4004 ECC803,5751) Preamp tube: 12AU7 × 2(Equivalant ECC show contact info CV4003) Power tube: KT88 × 4 (Equivalant 6550) Rectifier: 5AR4 × 1 (Equivalant GZ34) -Dimension (W × D × H): 410mm x 335mm x 198mm -Power supply voltage: ~ 110-120v and 220-240v ± 5% (50/60Hz) -Working conditions: Temperature: 0 ºC ~ 40 ºC Humidity: 20% to 80% -Storage conditions: Temperature: -20 ºC ~ 70 ºC Humidity: 20% to 90% Features: -Handmade, using scaffolding welding -Using two high quality and wide frequency response EI output transformer -Using a customize Z11 core toroidal power transformer -Amplification and drive part use SAR4 rectifier . -Use 2X12AX7 and 2X12AU7 as amplifiaction, -Use special high selected KT88 tube as push pull power amp lamp,providing switch for the triode connnection and ultra-linear connection modes.The triode connection mode is more suitable for the voice and the sound is more soft, delicat as well as nature. The ultra-linear connection is suitable for the big scence, the sound is more open and lively. -It has a pure power amplifier ans it can conncet with an independent pre-amp's signal input. -There is a power tube current control button and an electric meter dial. -Infrared remote control function -Power Mute delay function -Selection of Japanese high-grade ALPS motor potentiometer. -Easy installation of the plug-type vacuum tube shield Tube Amplifier Precautions: -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. RUN-IN to the amp gives it's best and stable https://offerup.com/redirect/?o=c291bmQuc28= during the first 100h use time the sound maybe is not the best, you can also use your own run-in method. -If you donot sure how to plug the tubes, please contact us before try it Speakers connection -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

Condition

New

Model

X7 KT88

Type

Tube Amplifier Class A

Brand

Muzishare