Depends on your budget, Ricky. Many believe Naim is ok for dull speakers, which I assume your's is not. Solid state gear is a mine field if your goal is non fatiguing music. For a lot of money, get the full TacT system. This will do what Clueless says can't be done. To make it work, you will need an advanced pc. The TacT actually measures your speaker's frequency performance and room interaction. All relevant sound waves are then analyzed and can be subsequently displayed on your computer monitor. The Tact will adjust the speaker's output to give you, the listener, a flat line response if you desire. From there you can do all sorts of tweaking to the frequencies.
After saying that, I have to say I don't have a TacT. I am very happy with Pass Lab's offerings. You can get their Alephs for less than a new Naims. All Pass Labs solid state amps are as smooth as butter.
Or for real cheap, buy a used Jolida tube amp. Tubes are unbeatable for acoustic music. Use curtains, throw pillows, carpets, and box beams (if you are handy) to break up standing waves.