James,
I don't mean to belabor this issue, but just so I understand, isn't it true that the BP-26 has better performance than the BP-25 or the SP-2, despite having the same pre-amp circuitry, due to the MPS-2 power supply? I ask mainly because I have a BP-25, and have been thinking about upgrading to the MPS-2, as I understand the performance improvement is notable. Is the SP-2 power supply equal in quality to the MPS-2, in terms of driving the pre-amp circuitry?
Thanks,
Stuart