I have a question. I have just got a Lowdown 300 and the amp generates quite a bit of noise (I think it is coming from the fan that is used to help cool the interior. At 1 metre (3 feet) or thereabouts from the front of the unit I tested the sound with a sound meter, the sound is 37 db  (which my chart tells me is between the background noise in a library (30db) and that of a quiet office (40db) -- and closer to the latter). Placing the sound level meter at the rear of the amp gives a correspondingly higher db reading of 63 db (which is equivalent to conversational speech or an air conditioning unit).

In my view, it is a noisy amp given the background hum from the fan (I don't think it is the speaker/amp) since the sound levels above were taken when the master volume was set to zero.

My question is as follows: is the sound level I have for the amp to be expected or is it unusually noisy for this kind of amp. I know it is pretty powerful unit and hence probably does need the fan -- but I am not very pleased with the background hum it is generating.

Does anyone have the manufacturer's spec on what the ambient sound to be expected from the unit is? What are other users experiencing in amp noise? Do I have a faulty fan/unit?

Apart from the above, I like the rest of what the amp does -- in particular the way it 'emulates' certain distinct amp systems, plus the other added features. And its power!

Peter