NAD C270 or C272 are newer possible choices. McCormack would be better, B&K at least as good as NAD. If you need an integrated amp at that price point, then the large NAD C370 or C372 could work.
In addition to Carver, Parasound and Hafler are some other brands that are viable choices available today at well under $500. Be aware that older electronics are a stop gap measure that may or may not provide long years of service as noted above.
See here to get general idea of market for inexpensive used amps, at least in Seattle area:
http://www.hawthornestereo.com/used/
In addition to Carver, Parasound and Hafler are some other brands that are viable choices available today at well under $500. Be aware that older electronics are a stop gap measure that may or may not provide long years of service as noted above.
See here to get general idea of market for inexpensive used amps, at least in Seattle area:
http://www.hawthornestereo.com/used/