rwwear is right on.
For your benefit:
Assuming 91db speakers
1 watt = 91db
2 watts = 94db
4 watts = 97db
8 watts = 100db
16 watts = 103db
32 watts = 106db
64 watts = 109db
128 watts = 112db
256 watts = 115db
With that said, it takes double the wattage to gain 3db. It take 10db to get a perceived doubling of power. So, with exact same "quality" amps you won't hear a difference.
Your 150 watt rating is continuous. That is a huge amount of power to put out from any amp continuously. Try a different amp for fun. You may be surprised to find some 30 to 40 watt amps that can hold their own against a 200 watt amp...(another argument)
For your benefit:
Assuming 91db speakers
1 watt = 91db
2 watts = 94db
4 watts = 97db
8 watts = 100db
16 watts = 103db
32 watts = 106db
64 watts = 109db
128 watts = 112db
256 watts = 115db
With that said, it takes double the wattage to gain 3db. It take 10db to get a perceived doubling of power. So, with exact same "quality" amps you won't hear a difference.
Your 150 watt rating is continuous. That is a huge amount of power to put out from any amp continuously. Try a different amp for fun. You may be surprised to find some 30 to 40 watt amps that can hold their own against a 200 watt amp...(another argument)