Greetings! Swapping out your speakers alone does little to improve your audio because you're still stuck with the tiny de-rated amplifier on the MPU board. The stock amp has very little drive and is similar to what you might find in a flat panel television. Adding the feature rich PinWoofer amplifier increases dynamic range, which is the difference between the quietest and loudest sounds in the track. Reproduction over a wider range of sound intensity has the effect of providing presence to the title. You'll spend a little more with us, but you won't be disappointed.
Give me a shout if you want to learn more - happy to help.
-Dan