Decide between two new stereo amplifiers

[itryphysics]

Homework Statement

You are trying to decide between two new stereo amplifiers. One is rated at 130 W per channel and the other is rated at 200 W per channel.
In terms of dB, how much louder will the more powerful amplifier be when both are producing sound at their maximum levels?

Homework Equations

dB = 10 log (I/I_o)

The Attempt at a Solution

I was not sure If i can use the 130 W and 200 W as intensities...

 

[Confundo]

Power is proportional to the intensity so yes.

 

[itryphysics]

so the solution is :

dB = 10 log (130/200) ?