Yaqin Mc-100B is a dual mono tube amplifier working in a push-pull system based on KT88 power tubes (indirectly heated tetrode) and the following control tubes: 4 double 6SN7 triodes and 2 double 12AX7 triodes. The set consists of integrated power amplifiers and a preamplifier in one housing with its own power supply.
The amplifier uses separate power transformers, a choke. High-capacity capacitors were used in network ripple filtering systems.
The amplifier's front panel has an input selector, potentiometer knob and 1 pair of RCA line inputs with variable sensitivity. This sensitivity is changed by a switch on the front panel. We can choose from <= 0.25 or <= 0.6V. The amplifier has four RCA line inputs on the back. The rear panel has an RCA line input and power outputs for columns with 4ohm and 8ohm impedance
The amplifier is equipped with a protective cage for llamas. A power cable, allen key for removing the protective cage, a bias adjustment screwdriver and a set of fuses are added to the amplifier. Everything is placed in a solid housing.
The amplifier sounds very dynamically, with beautiful deep bass and very good extension on the other edge of the band. He plays a very wide and deep stage. Resolution can be seen quickly, mainly in the mid and high range. Nothing blends together, no details are lost under the sheer volume of other sounds. The midrange is strong with very good separation of voices, detailed and clean. The nature of the treble is delicate with high detail. Bass can play low and soft, come on it's not spectacular. .
The amplifier's microdynamics are at a fairly high level. All minor bumps, blows, jerks can be heard throughout the band.