vacuum tube Hi-Fi home audio amplifier

Product name: HI-FI vaccum tube amplifier Model no.: MV3 input impedance: 47K ohm amplifier rating output power:18W x 2 output impedance:4Ω,8Ω amplifier frequency responce: 18Hz 30KHz ±0.5dB vaccum tube model no.:6P3P(6L6)X 4 ,6N1(12AT7)X 2 input level: 700mV power voltage: AC220V-50-60HZ Material: aluminum material technical data No.itemTesting conditionstandardtrack Real testingremark1Output power Sine wave 1KHZ RMS 1%R18.4W18.2WSine wave 1KHZ RMS 1%L2Harmonic distortionNormal working condition<3% ≤1% ≤0.3% Rating1/3 output power<3%3Biggest adjust noiseVolume to the loudest<2MVR0.15MV 0.15MV L4Signal to noiseCut signal input(1KZH)>40dB (>50dB)R85 dB85dBL5sensitivityRating sine wave 1KZH(output 10%distortion)R700MV700MVL6Frequency responce±3dBAudio signal input conditionW18-30KHZ18-30KHZ After-sales service: We are committed to long-term after-sales service, the success of which is reflected by the many customers who stay with us year after year. Our warranty and return policy: All new amplifier or speaker purchases come with 1 year warranty covering any manufacturing defects.