Jet,
From what I understand a direct coupled 300b is difficult to execute for the reasons you mentioned. As far as capacitor vs interstage transformer it comes down to part quality and implementation. A good quality cap beats an average quality transformer. If both are of high quality it becomes a matter of design and preference. Companies that offer both such as Audio Note select interstage transformers for their upper tier products. Good transformers don't come cheap. I know excellent results are obtainable with eirher choice. Engineneer Andy Grove of Audio Note has written interesting articles on this topic. Strong arguments can be presented for either approach.
Charles,
From what I understand a direct coupled 300b is difficult to execute for the reasons you mentioned. As far as capacitor vs interstage transformer it comes down to part quality and implementation. A good quality cap beats an average quality transformer. If both are of high quality it becomes a matter of design and preference. Companies that offer both such as Audio Note select interstage transformers for their upper tier products. Good transformers don't come cheap. I know excellent results are obtainable with eirher choice. Engineneer Andy Grove of Audio Note has written interesting articles on this topic. Strong arguments can be presented for either approach.
Charles,