Gain Cards and Gain Clones, how do they different


Sorry if the question is too simple, or is gonna leave me in a "uh duh" situation.
But I've read about 47 Labs Gain Cards" and there have been "gain clones" in the auctions.
What are they? How do they differ from "standard amps" to the point that they are called something different?
Any benefits to the design over "amps" and are the "clone" type just "mid fi"?
Subjectivitywelcome.
Thanks
spiro

Showing 1 response by cdc

Gain clone is a copy of the original Gaincard.
Peter Daniels of Audio Sector in Canada has gain clones reviewed at 6moons.com and they are rated better than the original gaincard and priced at 1/2 the cost to boot.