I'd look into Daedalus Acoustics. I'm considering them for my main system now. I heard one of their pro combo amps at a NAMM show years ago, and it got plenty loud without being fatiguing. They were demoing with a violin, and it sounded very much like an unamplified acoustic violin that was just loud - not like an amplified-compressed-distorted typicl PA system sound at all. Rich, controlled, vibrant. Their stuff is also well made with beautifully finished hardwoods. With a $9000 budget, you could probbly buy near their top-of the line brand new and be extremely happy