2 more solutions for solving Buzzing / humming noise from Pro-Ject Essentials II phono to Phono Box

In my previous (very old) video I described a way to eliminate AC hum from the phono stage by connecting a wire from the pre-amp's body directly to the Earth pin of a mains plug. That video is here:

In this video I've explained 2 more options, which I'll summarise here:

1) Get an earthed linear power supply. Note that not all linear power supplies are earthed. You can find loads of these on AliExpress and there are pictures of their internals. Make sure there is an earth wire connecting the AC C13 inlet to the transformer and metal body of the PSU. This in turn means that the Negative terminal of the DC power output is also earthed. This in turn earths your pre-amp and elimiates AC hum.

Note: Pro-Ject High Power it is an earthed linear power supply but it outputs 15 Volts only so it can't be used to power the Phono Box or any other Pro-Ject pre-amplifiers.

2) As demonstrated in this video, hook up an earthed audio appliance to your system. In my case the only earthed device is the old CD Transport tucked away in the cabinet below the amplifier. Thankfully this 'Little Dot CDP_I' has built in earthed PSU which means the whole unit is now earthed. I've connected this to my amplifier (with built in DAC) via Coaxial TOSLINK instead of optical, which means the whole audio system is now earthed through the CD Transport, this is because the body of the amplifier is now earth and so is all its RCA connectors. This in turn earths the external DAC above it and the Pro-Ject phono box in the left cabinet as well.

There is absolutely no AC hum in this setup.

UPDATE: On newer turntables e.g. Debut Carbon EVO, the ground lug on the phono output is connected to the negative (-) terminal of the DC motor. This means the whole system can be earthed by using a linear power supply e.g. Pro-Ject High Power it to power the motor.

[adayinthelife]

H Brian, thanks for posting your video. Quick question, I have a Project Debut Pro .... hooked up to a Marantz PM6007 inter/ amplifier I Have ground the turntable to amp .... I have ground loop hum .... so have purchased the Project "High Power IT" grounded high performance power supply, hoping it rectifys the issue QUESTION .... should i remove the earthing cable between the turntable and amp??? Im not sure?? .... Im thinking it will no longer be required?? and as you are saying here the amp is floating earth ... my only cocern is that should amp, cd etc etc have a short would it then earth/go to ground via the turntable (if still bonded together with earth wire) because it now has earthed power supply .... ie so should it be removed??? Sorry lengthy script .... any help much appreciated>

[howardpassman]

Obviously hadn't rehearsed this video beforehand. A bit tedious to watch.

[v]

Maaan, 10 minutes of speaking. You could explain it into a half of minute

[kushmirproduction]

Mad Love From India Ur The best I just wanted to can i use this method everyday without causing any problem to my speaker and phono pre amp ?

[zztop]

Hey all you have to do is replace YOUR TURNTABLE POWER CORD! ifi power X powe cord will remove all your humming noise back round!

[krishnaniyapillai]

I don't know actually what you are mumbling about. You only yap yap yap but not showing the point at where you are referring by indicating it. Very bad video 👎