Pre-amplifier for turntables

I needed a replacement for my current unreliable pre-amp and this seemed ideal. Whilst it does work, there are problems. Firstly, using the mains adaptor for power, there is an audible mains hum on the recorded material. Normally I remove that by...

This little device does a good simple job, providing it is run on batteries and not on the transformer it comes with, as the transformer creates a very loud humm, which cannot be removed by editing the sound.