Who has a Balanced Audio Transformer on their mains for their naim system?

It's not a placebo. Balanced power has the unique opportunity to greatly reduce mains borne hash before it even makes it into the power supplies. I would much rather lash out for the equivalent price of a couple or three Powerlines and get a heroic sized balanced power transformer- which objectively does things that no mere power cord can or will ever do. It is at LEAST the equivalent of a Hi-to-Supercap type of upgrade per component, and benefits every component, so its effects are multiplicative instead of just additive. 


Did you fit this without a dedicated feed to your hifi system? - so it simply plugged into a nearby socket on your regular ring main?

I currently need 4 mains feeds (2x hicap, 2x nap) for which i use a 4x hydra cable.

Would i therefore need 4 sockets on a BPS & be rid of the hydra cable? Or would i still use the hydra cable in between the BPS & naim boxes? (They don't appear to do anymore than 2 sockets in the BPS range).

Would the conditioning balanced units (CBS) do an even better job as opposed to the standard unit (BPS)?


alanbass1 posted:

Well, with all this talk of the merits of balanced mains I decided to get one of the Airlink standard balanced power supplies: https://airlinktransformers.co...power-supply-bps2000

As my system comprises the 272/555 combination and 250 power amp I figured the 2000va rated one would be more than sufficient.  It arrived this morning and on first listening I'm amazed at the improvement I'm hearing.  I was a little concerned that PRaT would be affected but it does not appear so and the whole soundstage appears to be more solidly defined, bass has more authority without being louder, and none of these improvements at the expense of musical cohesion. 

Another thing that concerned me when deciding to try it was whether the unit would make an intrusive hum.  I'm glad to say that my unit is very silent (need to put my ears right up to it to hear any transformer hum) and my PS555 appears quieter too (not that it was overly loud but I used to hear audible hum from it when standing next to the equipment rack, not any more - I now have to put my ears up to the 555 to hear the transformer working).

I'm scratching my head that what is a £340 upgrade, when VAT and shipping is included, can make such a marked improvement and that it is not almost a de-facto upgrade heralded by those that have one.  I have read that over time I should expect things to improve further which will only add to the VFM of what is such a simple and painless (dare I say it) upgrade. 

Of course, I might be suffering from some form of placebo effect so I will keep the Airlink  in my system for a month and then remove it to see whether the changes I believe I am hearing are really all positive - to my ears that is - I don't have measuring equipment and I'm not qualified to wear a white coat I'm afraid.

hi alan,

i too have the bps 2000 running from non-dedicated mains (next job on my list now my room been refurbished) and did the leave the bps in and then remove it from system just to check sq, conclusion was it definitely sounds better running with off the bps 2000

went for this model as didn't have any additional conditioning components 

intend to get a dedicated mains then another bigger airlink bps which will keep in the garage

been impressed by their build quality too, it is built like the proverbial tank

anyhow do the test yourself and see what you conclude

Hi ARB76, some Airlink BPS have multiple output taps which allow you to step the voltage up or down in 10-12Volt steps. Mine has this feature. 

However, many don't have this feature so best to check with Airlink via phone or email before you choose the right model for you. 

Hope this helps, FT

I went with the recommendation of Airlink's Engineering Director, which doesn't have any conditioning bells or whistles. It's just a huge BPS (5kVA) with multiple output voltage taps. These enabled us to drop the voltage from a measured 242V at the wall socket to 230V, as per Naim's recommendation.

It does the job. Best regards, FT

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