I would leave the Cisco switch out of the loop in my view. Too noisy and I think it’s best being isolated
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Yes. What was I thinking.
Get it away from the naim gear.
Another Graham’s hydra user here. Bought when I had 5 boxes so mine’s a five-headed one. I found it a neat and cost-effective solution at the time.
Roger
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I have a 4 headed Grahams Hydra which I bought last year. Very pleased with it. It’s hard to describe what it does but I would say it adds a greater solidity to the sound, cohesion etc. Like Roger, pleased.
C.
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I have my 2960 off a Hydra head. No discernible negative effect and nice and tidy.
G
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What’s a balanced mains unit, Dave?
My Hydra goes straight into the wall.
C.
A balanced mains unit is, basically, a box that plugs straight into the wall. On the box itself there are (in my case) two sockets that my two Naim units are plugged into. The box contains an isolating mains transformer, and this sits between the hi-fi and the household power, but what makes this unit so different is down to the way the transformer is configured.
Most outlets set the mains at either 230v/120v AC on the line (depending on where you live), with Neutral set at, roughly, earth potential; on the balanced transformer, you see 115v/60v on both pins. I won’t bore you with all the detail, but the principle is that mains noise is effectively cancelled out - it’s called “common mode rejection”.
It works extremely well and almost eliminates mains noise without increasing line impedance in the way that filters do - and this is important especially for amplifiers as they demand current to be delivered quickly when dealing with transients. There are other types of noise, such as differential mode noise that this can’t deal with, but, by and large, it works extremely well and I’m very pleased with mine. I’ve been using mine for about ten years now with excellent results. Hope this helps
It was a company called “Airlink Transformers” They are fully compliant with the LV Directive and are CE marked. I’ve had mine for about ten years now and it’s very effective.
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