回复: 终极PK--记常熟/上海发烧友聚会
[quote] 原帖由 dickhk838 于 2008-6-30 12:01:00 发表
actually I agree that your modified 805 is very good since SP100 is very difficult to drive.
Thank you for your comment about our 805 vacuum tube power amplifier. As you Knonw, Spendor 100 is very difficult to drive for many vacuum tube power amplifier which is made in china. So we change the circuit of the 805 power amplifier to improve it’s drive ability. Although "Antique Sound Lab"'s Herricane which use KT88 x8 with maximum output of 200W, it is still Class
AB power amplifier and push-pull amplifier. But 805 power amplifier is Singel-ended. I think it’s very important for an amplifier. SE amplifier offers an advantage that Push pull amplifiers don't offer relative to the output transformer. The output transformer of Singel-ended amplifier has higher quality and request than push-pull amplifier. Do you think so? Push-pull amplifier also has Switching Distortion which is much bad for the sound. The push-pull amplifier has lower Damping Factor than Singel-ended.It is more difficult to contral the movement of the unit lead to bad sound.