Zesto Audio has announced a new product upgrade—the Energy Source Power Supply—named the ESP Supply available on three of the company’s preamplifiers: the Andros II Phonostage, the Andros Deluxe II Phonostage and the Leto Ultra II Preamplifier.
“I named it the ESP Supply because it anticipates the energy needs of the music. This new ESP Supply unlocks the true potential of the circuit, so it is at ease and doesn’t have to work as hard. The music is more natural,” says George Counnas, president and design engineer of Zesto Audio.
The biggest difference in the ESP Supply is the transformer changes from an “IE” to a Toroid design, this generates significantly less noise because it does a better job of concentrating the magnetic field.
“What I really like is how the ESP Supply allows the main circuit to have more music flow through it, with so much more detail. It also creates a livelier dynamic presentation, the quite passages are quieter and louder passages have more punch. The sound quality is an improvement throughout the frequency spectrum, so you have better clarity on the bass, midrange and highs evenly,” adds Counnas.
The ESP Supply is designed with bigger, fewer and heftier parts, which delivers more power with improved reliability. The rugged design of the ESP Supply makes it more resilient to power surges.
Technically, the improvements are impressive, such as the high voltage supply increases by 20%, from 250 to 300 volts to provide more headroom. Dynamic range opens up with increases from 90dBV to 122dBV depending on the model. Both the high and low voltage supplies provide more current, so it’s less restrictive to deliver more music. In the Phonostages, the Noise level is 5dBV quieter, which increases the black levels considerably.
More news from CE Pro: CE Pro Podcast #24: Editors Roundtable Recapping CEDIA Expo Virtual