I'm very close to upgrading my system, mainly to play Vinyl, but will have to start with either an amp or turntable.

As mentioned previously, I have a Dual 505 turntable and a Cambridge Audio Azur 540A amp, which has a gentle hum when turned up to 3/4 power, which was necessary to hear vinyl records even via a preamp, but not for CD via my Monitor Audio Bronze B2 speakers.

I was very close to deciding that the amp was the first thing to upgrade, but today, while playing the turntable the gentle hum became a very loud buzz through the RH speaker. This stopped when I put the tonearm back on its rest and did not happen at all with the CD.

Am I right to think, now, that the problem is in fact with the turntable? In which case, that's the first upgrade to make?

Thanks for any suggestions,

Stephen