Our old JD 4440 had a fairly quiet cab and had a good radio with cassette deck and CD player that you could hear easily. Plus we had a business band radio that we could hear well and it talked out good too. Where I worked, my last job, we had a Case IH and a Kubota, both about 100hp, that were both fairly quiet. But I agree about wanting to be able to hear what was going on with whatever implement I was running. But on those long nights plowing snow, where I knew the roads and parking lots well, I cranked up the radio.
But this RK37SC is SO loud in the cab that if I had good enough speakers and amp to be able to hear anything above the engine and transmission noise, it would severely damage my hearing in fairly short order. I am going to try to put down some more rubber matting on the floor and look for holes and cracks to plug to see if I can quieten this thing down to a tolerable level.