Not sure yet it is early days, takes time to settle an amp in. One thing I noticed is the circuitry has changed from the Rumble 200 v3. On the 200 the loop channel came after the master volume, a pain when I used it for the compressor, turn it down and the signal to the compressor was gone. With the new one it is after the gain control as it should be. Bass is not as boomy either.