Watts are the amount of power that can be delivered, capacitance the amount of current stored for immediate delivery. It is possible to add outboard cap banks IF you know what you are doing, possible to generate an interesting epitaph if you don't. If you have an amp that really delivers 900 watts into 4 ohms and has 60K of capacitance you should have enough, but specs don't always tell the whole story on sound quality. Current storage is far less important for Class D amps and similar which can draw current very quickly. A complicated question with no simple answer; remember again specs aren't sound quality. Some think very large storage is critical, others think small caps give a more agile sound, Classe use to take this route, may still.
What's more important, watts or capacitance?
I'm confused about what makes an amp able to reproduce musical transients realistically. Some articles I've read state that one needs lots of power, measured in watts, to handle dynamics, especially when pushing moderately sensitive speakers. Other articles refer to capacitance as the key. Currently, I use an amp with 600W / 900W into 8/4 ohms, and if I read the specs correctly, it has 60,000 microfarrads of capacitance. An alternative I'm considering puts out 'only' about 220W / 400W but claims capacitance of 200,000 microfarrads. So which amp will sound more dynamic? FWIW, my speakers have a sensitivity of 87.5 db, avg. impedence of 4 ohms and a minimum impedence of 3 ohms. I don't listen at real high volumes, but I do like classical music at close to live levels.
Thanks for any insight!
Thanks for any insight!