I have owned both an Ayon Spirit II and Spirit III amp for over 10 years now. I bought the new Spirit III, thinking it would be a sonic upgrade from the Spirit II. After comparing both, I found that I actually liked the sound of the Spirit II better, so I sold the Spirit III, and continue to enjoy the Spirit II.
For my tastes, I prefer using the triode mode with the amp, for the fine details and ambience are more obvious. I also like the sound of the 8 ohm tap over the 4 ohm tap. For input tubes or driver tubes, try a pair of Amperex 7316's, which are very dynamic, detailed, and lively, with great highs. I would not suggest using them in all 4 positions, for it may get to be a bit forward sounding. I also like using the direct RCA input on the amp, if you already have an excellent sounding pre-amp, especially when listening at lower levels.
I have tried many speakers with the amp, and have found that 91 db efficient 8 ohm speakers like my Reference 3A Episodes and De Cappo's are an excellent match with the Spirit II in the triode mode (approx. 35 w.p.c.) If you tend to listen at loud playback levels, or need to fill a big room with sound, you may want a much higher efficiency speaker. Hope this helps!
For my tastes, I prefer using the triode mode with the amp, for the fine details and ambience are more obvious. I also like the sound of the 8 ohm tap over the 4 ohm tap. For input tubes or driver tubes, try a pair of Amperex 7316's, which are very dynamic, detailed, and lively, with great highs. I would not suggest using them in all 4 positions, for it may get to be a bit forward sounding. I also like using the direct RCA input on the amp, if you already have an excellent sounding pre-amp, especially when listening at lower levels.
I have tried many speakers with the amp, and have found that 91 db efficient 8 ohm speakers like my Reference 3A Episodes and De Cappo's are an excellent match with the Spirit II in the triode mode (approx. 35 w.p.c.) If you tend to listen at loud playback levels, or need to fill a big room with sound, you may want a much higher efficiency speaker. Hope this helps!