YAQIN MS-77T Push-pull tube amplifier HIFI vacuum tube amplifier YAQIN was founded in 1994 and covers an area of more than 5,000 square meters, has been specialized in the research and production of power amplifiers and transformers for many years. Mainly produce Hi-Fi tube amplifiers (tube amplifiers), Hi-Fi tube pure pre-stages, tube DAC decoders, Hi-Fi power filters, tube radio and other high-end power amplifiers. Specifications: Output Power: 40Watt x2 (8ohm) Tubes: 7027B x4, 6J1 x8 Input sensitivity: ≤0.23V(1KHz) Frequency: 5Hz~68KHz (-2dB) Signal/Noise Ratio: ≥88dB (A) Harmonic Distortion: ≤0.5% (1KHz) Consumption: 250W Audio Input: 4 groups RCA Audio Output: 2 groups Load impedance: 8ohm or 4ohm Colour: Black body & Silver Size: 17x13x8.3in(Deep x wide x high) Product weight: about 50lb Package weight : 52lb Input voltage: 110-120v or 220-240v 50/60hz available. Tube Amplifier Precautions 1. 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. 2. Temperature is higher when tube amps working, placing attention to ventilation, cooling. 3. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes. 4. You should take about 100h time to operate the amp.RUN-IN to the amp gives it's best and stable sound.so during the first 100h use time the sound maybe is not the best,you can also use your own run-in method.
MP-5BT
I30
MC-100B
MS-77T