ZESTO Eros 300 Monoblocks

The following is a press release issued by Zesto Audio.

In development for more than 3 years and over 79 circuit revisions later, the Eros 300 is ready for Prime Time. “This is an amp with authority”, exclaims George Counnas, President of Zesto Audio. George acknowledges there is an inherent conflict in good amplifier design because you want as much power as possible and yet you need it to finesse the most delicate passages of your music. The real design challenge is not finding a balance or compromise, but for it to be both powerful and musical”.

George continues, “I always look at design from two points of view, as an audio engineer and an electrical perspective. In each design phase there is a 50/50 balance between the technical spec and listening.”

George says, “What I really like about Class A power, besides being so fast and responsive, is the fact that it has the lowest distortion so it turns out to be the most musical”.

The Eros 300 has plenty of power to drive your speakers with a matched sextet (6) set of KT88’s and two 12AU7’s producing 150 Watts per block of pure Class A power. The circuit design and power supply are quite different from Zesto’s Bia 120 Stereo power amp. Counnas uses a Push-Pull and Ultra-Linear circuit topology and a more robust choke based power supply incorporating a custom Toroid power transformer. 

The Eros 300 has Auto-Bias, so it is easy to use with no adjustments or tweaking.

For more information please visit our website: www.zestoaudio.com

The EROS 300 has 2 options for your speaker cables, the 3 way binding posts or the Speak-on connector. The 4 & 8 Ohm taps provide an efficient transfer of power to your speakers. All fuses are easily accessible. The XLR input connector has its own ground lift switch to eliminate hums.

Zesto Audio is a manufacture of fine analog equipment specializing in vacuum tube technology. Their products include the award winning Andros 1.2 PhonostageLeto 1.5 Preamp and the Bia 120 Stereo Power Amp.

The EROS 300 retails for $19,900 a pair and sold through authorized dealers.

George Counnas is the founder, president and design engineer for Zesto Audio. He has loved music all his life and went from a musician, to an electronics engineer, to an audio engineer. As a young man in England, he designed vacuum tube circuits. He worked for DECCA Navigator (now Raytheon), at the time Britain’s largest electronics company, as part of a research and development team designing airborne navigational systems for the Royal Air Force. So he has many years of experience designing, creating and bringing to market high-end electronic equipment.
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