Suggestions for an amp


It has been suggested that I should look at a different amp to get the best sound out of my speakers. 
I have a Yamaha Aventage RX-A830. Front speakers are Monitor Audio Silver 8. 
I am mostly interested in something to provide the best sound while listening to music but also be decent for HT. I have an Orbit with a Grado Black 1 cartridge for vinyl. 
I am not looking at spending a ton of money and will definitely consider used (I am looking at several on this site). 
Many thanks!
128x128granburyspring
D2. I read up on the anthem and it looks great as well. I did not see an ht bypass or unity gain feature listed. Is it capable of that function easily?
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I did end up getting the Peachtree Nova 150 and set everything up last night. It all sounds phenomenal. I appreciate everyone's help in this!