Cambridge's top-of-the-line Azur products are all well known now for their great bang-fer-yer-buck performance, and there are lots of reviews and Owner comments out there that you can read.
Go to Cambridge(dot)com to read all about the features for this preamp.
For sale here is a lightly used Azur 840E in perfect condition - the plastic protective strip is still on the display! This one has had the factory-authorized volume control modification/repair that many of the other used and new ones have not had.
You can have it for only $950.00 which is hugely under the Bluebook price of $1220.00!
Wire transfer preferred, or Bank Draft/Money Order after it clears. If buyer wants PayPal, buyer pays fees.