If you're going to use more than one mic, you'll need to use a mixer, otherwise with a single mic, just plug into the 2000 and it will do an admirable job.
I bought the amp about 10 years ago to have as a spare. As UD and Donny will tell you, I'm a nut case about having spares. That's why I have two of just about everything. The amp was used a couple dozen times at most and is in excellent condition.
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)