Zesto Audio Leto 1.5

This preamplifier is sublime. Delivers open and transparent reproduction with a wide and deep soundstage, accurately positioning instruments and voices. The stage height is right. Very pleasant listening!

This unit has five inputs: three single-ended inputs with an impedance of 100 kOhm and two balanced transformer inputs with an impedance of 10 kOhm. The frequency range is from 10 Hz to 50 kHz with a deviation of ±1 dB. Total harmonic distortion is about 0.02% at an input of 1V RMS. The gain is 12 dB and the signal-to-noise ratio is around 100 dB below operational level. The unit is equipped with a 1/4-inch TRS headphone jack. Dimensions are 17 inches wide, 12 inches deep and 5 inches high, weighing 23 pounds. Power consumption is 27 W, with zero consumption in the off state. The power supply is 110/120V AC 60Hz, with optional factory-installed 220V or 230/240V AC 50/60Hz. The unit is handmade in the USA and comes with a two-year limited warranty.

Zesto Audio was founded in 2010 by George and Carolyn Counnas. The brand is based in Thousand Oaks, California, United States. George Counnas has a background in music, electronics and product development, having worked as a studio engineer and in audio equipment development, among other roles. Zesto Audio’s products are designed with vacuum tube technology and are handcrafted in the United States. Its first product, the Andros PS1 phono stage, was introduced in 2011. Since then, the company has expanded its range to include phono stages, preamplifiers and power amplifiers. Each product is individually tested and designed with attention to internal wiring and component selection. Carolyn Counnas is responsible for operations and logistics within the company.