Albumguy,
Forgot to mention matching the output impedance of your Crown SL2 preamp (which is 500 ohms)to the input impedance of the amplifier you will be using. The input impedance on the amplifier should be atleast 10 times greater than the output impedance of the preamp. So, 500X10=5,000 ohms, which means any amp with an input impedance of 5k ohms or greater should be a good match. The input impedance of the Aragon amp I reccomended is 22,000 ohms which means it's a good impedance match. If you want a softer sound, a B&K amp might be a better choice for a similar price but I cannot attest to their reliability. Good luck.
Forgot to mention matching the output impedance of your Crown SL2 preamp (which is 500 ohms)to the input impedance of the amplifier you will be using. The input impedance on the amplifier should be atleast 10 times greater than the output impedance of the preamp. So, 500X10=5,000 ohms, which means any amp with an input impedance of 5k ohms or greater should be a good match. The input impedance of the Aragon amp I reccomended is 22,000 ohms which means it's a good impedance match. If you want a softer sound, a B&K amp might be a better choice for a similar price but I cannot attest to their reliability. Good luck.