+1. I agree with kalali’s post above that you should start a new Audiogon tread on the Gryphon Diablo 300 Integrated Amplifier. This post is giving you MANY recommendations on other integrated amplifiers, that it seems, you are not interested in. You stated above that "you are only interested in the Gryphon Diablo 300 Integrated Amplifier”.
I do not believe this tread is giving the information you need to make a decision. A new Audiogon tread only on the Gryphon Diablo 300 Integrated Amplifier might might result in getting the information you need.
Based on the large number of amplifier recommendation above, as you can see, there is no one integrated amplifier that is the best and recommended amplifier. I suggest you locate your nearest Gryphon retailer and listen for your self. I guarantee you that for every person that likes the Gryphon, an equal number will probably not. I suggest you make your own decision based on what you hear and like and not what someone else recommends.
This is a very strange hobby because of the wide variety of opinions and recommendations on the many different products. I have listened to amplifiers that other people love and I do not. In addition, I sometimes agree with what my retailer recommends and sometimes not. I read the reviews, sometimes, but they do not dictate what I buy. I have learned to make my own decisions based on what sounds good. Unfortunately, I sometimes make a mistake that is expensive but I sell the item and buy something else. I hope this above helps.