Greetings!
Actually, this is a
fairly common question. The empeg was my first non-stock install, so I cannot give you a good recommendation based on sound quality and experience. There are lots of others on the board that can do that better than I. Much of this depends on what you plan on doing:
a) Are you replacing the factory speakers? The factory speakers may be lower power and you will need to match the amp to the level your speakers can handle. Also, there are many types of amps and some are better for certain applications.
b) Do you plan to put in a subwoofer? There are amps that have dedicated subwoofer channels, some that are designed to handle a sub specifically / only.
c) What is your installation budget / desire for high quality? Like many things, you get what you pay for. There are good, low cost amps out there. There are also exceptional high cost amps out there. From the sound of it, you are probably looking for something basic to start with. But if you intend to expand this later on, you may be better off getting the best you can afford at the beginning rather than trying to replace it later.
d) What is your installation design / physical layout? Your postings sound as if you were just thinking to swap out the existing head unit only. This will work for a lot of mass produced units, but the empeg is really a bit special / high end. The lack of an internal amp means that some careful planning has to be put into place to figure out where you want to put the amp, how you want to run wires, etc. All of this will determine the quality of your install and the quality of your sound at the end.
e) Did your previous install have an amp, even if it was a factory amp? You might be able to use it with the correct wiring adapters if there is anything there. A little research should let you know this one.
f) A good site for you to take a look at would be
Basic Car Audio Electronics. This is an excellent starting point / primer for those that need a bit more information in the type of components and installation recommendations. It is also "a good read" for reference.
Lastly, please note that it is a weekend in the summer. Normally, the board is a bit quieter than normal during these periods. I am sure a lot of people with much better information and recommendations will be along within the next day or so...