แอมป์หลอด | Baishan Listen - A8 (KT88) | Single-Ended Class-A | Vacuum KT88 Tube Integrated amplifier 12 Watts

KT88 single-ended:

Because of the emergence of 2A3 and 300B, KT88 single-ended seems to become chicken ribs. The KT88 single-end is made with new and heavy materials below. As we all know, the two most important points that determine the sound quality of the amp are the tube and the cow (transformer). KT88 has been selected for the electronic tube, so the power transformer and output transformer, especially the output transformer, play a decisive role. The power cow and output cow used by this machine are the same as those on the 300B single-ended (the power cow only has the difference in filament voltage). The largest power supply in the whole network is 114 * 70 Z11 iron core, with a power of 350 watts, which provides sufficient power. The output cow 96 iron core stack thickness is 40 (large window, thick wire diameter can be used, large primary inductance). The output cow of the competition product generally uses 76 or 86 iron core. The key is the winding method, using pure manual winding. The primary 4 layers sandwich the secondary 3 layers and the layers are wrapped with paper to fully reduce the leakage inductance and distributed capacitance. Friends who know technology can ask me for the square wave chart of this machine, or they can test it by themselves. Such a machine made by an output cow has a low frequency (the large core makes the primary inductance sufficient) and high frequency (four clips and three layers of padding, small leakage inductance, and low distributed capacitance). In terms of circuit, the two-stage Russian 6H8 common cathode amplifier is used to promote KT88. The push level is the same as the 300B. It can be said that this KT88 single-ended is a welfare model that does not make money but only sells for sales. It completely uses 300B materials, but the price is very affordable.