Looking for an used, inexpensive pre amp


Currently using a cheap but fairly nice sounding Dayton T120 D class amp.  Not enough inputs.  I would like to find a pre amp to use with this amp and perhaps at some point, if I can find the money, I can buy a power amplifier to replace the Dayton.

Figure my budget to be under $200 right now.  Looks like plenty of older inexpensive Solid State pre amps are available on Ebay.  

Any ideas what I should look for when buying a preamp?  I've only used Integrated amplifiers up to this point.  
will62
Nad C160 is a fine preamp, I have the C162 and like it.  In 100-200 price range, you can probably get a decent vintage unit.  Look at Nikko or Yamaha preamps from the 80's.
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Great thread, the OP has only posted once and not come back ever!!

Cheers George