I’m a little disappointed in the comms around this, and indeed the strategy too. I have an Extreme on order and am starting to wonder if I’ve made a mistake. Much play has been made about the extravagant power supply arrangements in the Extreme, with costly bespoke parts:
…Our 400W linear power supply is a new inhouse development, especially created for the Extreme and its special needs. It is comprised of only the very best capacitors from Mundorf and Duelund, combined in a way we found to be most neutral to the sound. The chokes are supplied from Lundahl and were selected also by ear.
Extensive vibrational measures have been applied to make it as resiliant as possible. Again Panzerholz was used in strategic places to shift the vibration patterns in benign territory. The whole design is built for low temperature, long life and above all best sound quality…
Yet it seems that a pending (‘ultimate’?) upgrade option will be to remove this internal AC power supply, which would be replaced by an internal DC supply board and an external battery supply in a second chassis. The unstated implication is that the Extreme’s extravagant expensive AC power supply would be discarded in this scenario - unless there is a part of this strategy which has not been revealed (in which case, see my first phrase above). This seems wasteful of materials and resource. It also means that a significant part of the cost of an Extreme already purchased - and those soon to be delivered - would written off. Hmmm.