The heart of any power supply is its capacitors. Similar to batteries, capacitors provide the power for your equipment to operate — although our power supply uses them in a very different way.
The GreenForce power supply employed in all preamps by Backert Labs is unique, in that it allows the use of extremely high quality capacitors to run the power supply.
You may have heard of certain caps winning various “shootouts” — they’re made with the famous material from no-stick saucepans. We aren’t allowed to use that name, because it’s trademarked. So we call them “fluoropolymer” caps. (In the past they have also been called PTFE.)
In our Rhumba and Rhumba Extreme models, the GreenForce power supply uses very high quality polypropylene capacitors, for extremely linear and nimble response. These are not fluoropolymer caps, but they are a huge step *up* from the typical capacitors used in power supplies (which are known as electrolytic capacitors).
In our Rhythm model, the GreenForce power supply uses fluoropolymer capacitors, made by Solen. Online capacitor comparisons such as The Great Capacitor Shoot-Out have ranked fluoropolymer capacitors (in that case, made by V-Caps) in first place.
The Rhythm preamplifier is the only audio component in the world with an all-fluoropolymer capacitor power supply. In fact, the Rhythm is the only product of any kind with an all-fluoropolymer power supply.
Why put fluoropolymer caps in the power supply? Because they are more responsive. More nimble in responding to the demands of the source music signal.
The results: Very natural tone. Incredibly fast transients. Tight, accurate bass with visceral texture and punch. Extremely accurate timing. And fast dynamic changes — dynamics that really tell the story of what is on your source material.