I do not think that applies to the SP's...
You might want to look at this page:
http://www.bryston.ca/sp17_m.html"EASY FUTURE UPGRADES
We’ve designed the SP 1.7 with a plug-in ROM chip; this allows for convenient upgrades so future software changes are quick and easy to implement. On the hardware side, our pin-to-pin compatible digital board topology facilitates upgrades to future formats or digital processing technologies. The SP 1.7’s existing DAC chips can run at sample rates up to 192kHz facilitating upgrades to accommodate future formats. It is worth noting that many manufacturers promise that their units will be upgradable for future technology. Bryston actually does it (and is doing so today, at moderate cost, for the SP 1.7’s predecessor).
ON-LINE CUSTOMER SUPPORT
The Bryston website allows for downloading of technical bulletins, product addendums, and complete user manuals.
OUR 20-YEAR WARRANTY
Our commitment to build-quality and to quality control is why every product we manufacture features an unlimited, transferrable 20-Year Warranty, a warranty that remains unequaled by any other audio manufacturer in the world.
DIGITAL CIRCUITS 5 YEAR WARRANTY "