Need advice for Pioneer SA 508

[Ambu]

Hi,
Need advise on what kind of speakers with configuration support my Pioneer SA 508 stereo amplifier. I managed to get it this amplifier from Germany and tested with available speakers and found that amp is working well.
Please suggest by having which speakers the output will be best and perfectly sync with Amp. Can I go for ready made speakers or need to get it made from expert. please suggest and from where I can get this.

I stay in Pune, Maharastra.

Thanks.
Ambu