Erik; based on what you've posted you are using the right settings, so it may be the tubes. I find that the JD9 will convey a different sound depending on the tubes. My favorite tubes of the three I've tried were Mullard style tubes from Groove Tubes. That was with a Goldring Eroica H and an Audio-Technica AT33PTG. The Eroica (2.5mv) sounded better with a 1K load, and the low output 33PTG with a 100 Ohm load.
The tubes that came with my JD9 (purchased new) were Electro-Harmonix 12AX7 EH (Russian made) and I thought they were overly bright. The Groove Tubes 12AX7 M tubes sounded much better balanced (tonally) and had a pleasant, smooth sound. The sizzle of cymbals was still there but without the harshness. At least that's what I hear from the "M" tubes I purchased about six years ago.
Regards,
Tom
By the way, I'm running an A3.5 integrated and still think it's a great amp for the money.
The tubes that came with my JD9 (purchased new) were Electro-Harmonix 12AX7 EH (Russian made) and I thought they were overly bright. The Groove Tubes 12AX7 M tubes sounded much better balanced (tonally) and had a pleasant, smooth sound. The sizzle of cymbals was still there but without the harshness. At least that's what I hear from the "M" tubes I purchased about six years ago.
Regards,
Tom
By the way, I'm running an A3.5 integrated and still think it's a great amp for the money.