Currently there seem to be a large number of questions regarding cap/transformer upgrades and the transformer upgrade and how it intergrates with a Torus power unit.
The question often goes deeper to ask if the new SST2 changes remove the need for a Torus power unit.
I am sure James / Mike at Bryston will be able to confirm this but there is much more to a Torus and some other power conditioner units that just a transformer.............
What most power conditioners units offer is TWO WAY removal/reduction of mains borne noise, Anti spike protection, this is on the Live, Neutral and Earth lines. Often these units bring flaoting or fully balanced mains to the output of the power conditioner. The transformer in a power conditioner is of great use prior to an amplifier.
Let me break that down a little BUT FIRST I am not an electronics designer the info give is my understanding of mains conditioner systems (not mains regeneration in this case), I also DONT have a Torus unit but have looked at many pictures of internals and can see most/all of what is offered.
"TWO WAY" mains removal/reduction of noise.
NOISE on the mains is a two way issue. Mains on route TO equipment may have noise on it, The equipment is also able to produce noise and send that BACK down the mains cable. Amplifiers are (my opinion) one of the largest contributors of noise getting back onto the mains cable. Bryston aps areno exception to this from my testing. So a mains conditioning unit will filter this noise from the mains going to the equipment, and will often isolate the noise produced by each item of equipment from getting back to the mains supply to other equipment.
Anti spike protection or suppession - Electric components between live/earth live/neutral neutral/earth are used to supress or eradicate spikes. those with greater understanding will know delta filtering etc.
Depending on how the power conditioner is wired (and country of use?) the output might be floating balanced or fully balanced (UK laws dont allow this unless restricted access).
The transformer prior to an amp helps reduce noise and helps the transformer in the amplifier (and other kit) run silent without 'chattering','buzzing' etc. Transformer design/type can also aid this.
So for those that are concerned that they have bought a Torus/Power conditioner and it is not required I don't think that is the case. They offer much more in a very specific area than equipment does. Some of these features are seen in amp/head end equipment power supply designs, but never as comprehensive as a dedicated unit.
I have £13,000 mains conditioning units in my two systems, tests here show the reduction of noise they offer.
If 'Tomorrow' Bryston take the full torus design (or further if possible) and include it inside 'amp X', You buy 'amp X' and already own the top of the range Torus - Is your Torus wasted ???
NOPE........
You simply use it on the head end kit and know that it can now do an even BETTER job as there is less noise from 'amp X'. Torus owner with big smile on face.
(Side Note: Head end kit is cd,dvd,blu,hd dvd, turntable, pre, dac etc. in case thats a term not used often by others.)
JAMES - If there is any major wrong info feel free to edit, the above is my thoughts but also based on a large amount of testing in my and other systems. I hope of help to others that might be concerned about duplication of products.
Andy.