Timeline for Bryston pre-amp power supplies

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stonedeaf

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Timeline for Bryston pre-amp power supplies
« on: 27 Feb 2016, 02:49 am »
Am VERY pleased with my recently acquired BP-25 (2004 build)  - it has a two wire power supply input- the 98 build I looked at yesterday has a three wire AC input. I have no problem with a power supply that lacks the hum injection pin -but it got me to wondering what is the timeline for pre-amp power supplies ? I assume they all are interchangeable ?