Bob, you may be interested to know that prior to producing his own preamp, Mike Saunders, the QS designer, used the SP3A with his QS monos at home.'
From my experience the QS pre has a very direct sound, the SP3 more old school, but top/bottom end and detail can be improved significantly with updating the signal caps to something better than the Wima. I would suggest MIT multicaps which are quick and coherent sounding, they excel on timing.
From my experience the QS pre has a very direct sound, the SP3 more old school, but top/bottom end and detail can be improved significantly with updating the signal caps to something better than the Wima. I would suggest MIT multicaps which are quick and coherent sounding, they excel on timing.