Air Audio Services AC-2K Balanced Mains Transformer.
Balanced mains power for lower noise floor and cleaner detailed audio quality.
Balanced mains transformers work for mains power like balanced signal lines where there is a lower noise floor due to the balanced signal through the cables cancelling out the 'noise'. Both balanced mains and balanced signal lines are used extensively in recording, radio and TV studios to offer the lowest noise floor. The benefits of this approach used in professional installations is now available for home audio and AV set ups.
Balanced signal inputs and outputs are now commonly found on home audio equipment (using XLR plugs and sockets), only now are the benefits of balanced mains power finally being realised by music lovers and adopted for use with audio and A/V in home systems.
What will you hear with the AC-2K balanced transformer installed? The music will sound significantly more natural, digital sources seem to flow more musically, the space around instruments and the 'holographic' impression of the musical stage will grow. The silences in the music will seem blacker because the noise floor has dropped.
There are many benefits when this balanced technique is applied to incoming mains power. The balanced mains transformer partially isolates the incoming N and L mains line from the balanced mains supply from the transformer used to power your audio equipment. There is almost no DC entering the balanced output and 'noise' from EMI/RF 'noise' is not heard. Due to the balanced configuration of the power lines, the earth is not carrying any additional AC/DC or noise.
The AC-2K Balanced mains transformer can be used to power some or all of the audio equipment. It has the most beneficial effect when used with the low level analogue signal components and digital equipment, like DAC's, CD players, streamers, phono-amplifiers, pre-amplifiers etc. There is a benefit in using balanced mains power for power amplifiers (but in our experiance less than with the source and pre-power components). Clearly, if you have an integrated pre/power amplifier, it will be beneficial to use balanced mains to power it.
The AC-2K balanced mains transformer is designed to be connected directly from your mains wall socket and the output taken to your components. You can use your existing distribution block with any passive noise controlling components they may have in them. The AC-2K has an output voltage display on the from panel, which is switchable. Inside the substantial damped alluminium casework there is anti-surge protection and voltage input selector (220,230,240VAC). The specially manufactured 2Kva transformer is mounted on an anti-vibration platform, isolating it from the casework. We have gone to great lengths to prevent the transformer from being audible; only if driven close to capacity or dissipating a serious level of incoming DC on the mains line, will it buzz, and then, with all our anti-niose engineeringg, it is doubtfull that you will ever hear it. We use a massively over rated 2Kva transformer to ensure maximum power delivery.
We recommend that you use our AC-2K unit to power all your audio equipment, including power amplifiers up to 150W per channel. More powerful power amplifiers may best be connected directly from a second wall socket (or from a second AC-2K unit), further isolating it from the rest of your audio system.
Using balanced mains has one further advantage, the cables used to carry the power from the AC-2K are less critical. That is not to say that better cables will not improve the sound quality, but fundamentally, the RF and other noise picked up from unshielded mains cables is removed, so more expensive shielded mains cables are un-neccessary in our opinion.
We have a data sheet available, explaining balanced mains power in more detail, and the advantagges.
Full AC-2K specification sheet also available.
Price: £1,495.00p + shipping.
ReviewsCustomer feedback, 10 Dec 2018
The AC - 2K is well, just brilliant.
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