听过电子管的发烧友,大都为其甜美、柔润、醇厚的音色所折服。但真正打造一款HI—FI电子管机,又会遇到高耐压、大容量的滤波电解电容及电源变压器和输出变压器购置制作的困难,而且其制作成本也很高,令许多业余发烧友望而却步。晶体管机虽价格相对低廉,但因其音色冷艳、生硬,让人久听生厌。而MOS-FET场效应管(又称 Enthusiasm heard of the tube, mostly for its sweet, soft, mellow tone impressed. But the real build a HI-FI tube machine, will encounter high voltage, large capacity electrolytic capacitors and power transformers and output transformers acquisition difficulties in the production, but also its production costs are high, leaving many amateur enthusiasts behind. Although the relatively low cost of transistor machines, but because of its sound glamorous, blunt, people always listen to boring. The MOS-FET FET (also known as