Who needs a Quad and 2 Leak amps ?

I am an audio virgin and thus have the following questions, having recently (for 550 UK p ounds) acquired a QUAD 33  pre amp , LEAK T 12 power amp+  and LEAK POINT ONE amp.

1. can I run them to listen to a CD player ?

2. How much sound quality  would I loose out by having a mono amp (the Leak one )

3. Why have 3 amps anyway - should I not give one amp away ?

4. any comments on the price  ...

Many Xmas greetings

Yours

Audio - virgin.

A.