Superb acclaimed preamp, originally conceived as a two chassis unit (main and power supply).
This late prototype unit labelled Ruby-XP-03 incorporates three distinguishing features over the stock released product:1. Separate 40 lb power supply with tube rectification and slow start (instead of the timed relay in the released design), a stiff supply with 5 chokes supplying independent LC regulation for each channel; there is only one choke in the small released chassis. 2. Expensive Shallco switch used as a basis for the volume control with hand matched low-noise resistors 3. An extra tube per channel to drive the second preamp output independently 4. Larger hefty Pearl chassis instead of the diminutive Coral chassis. Roger abandoned this two chassis concept as he would need to charge a lot more for his product. Perfect cosmetically and sonically. Includes an 7 foot umbilical. Paypal adds 4%.
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