My design philosophy is to focus only on the important components and add nothing that could compromise the signal path. The only active components are the vacuum tubes that create a warm musical sound.
As a longtime audio engineer and producer, I’ve worked with a lot of professional equipment. I always preferred “true floating balanced” inputs and outputs because of their foolproof ability to isolate one piece of gear from the next.
And that means lower noise for a strong, clean and quiet signal.
The Leto preamp will compliment most systems: tube, solid state or digital. It will work with single-ended and balanced input source or power amplifier combinations.
With the Leto in your system it will allow the sonic detail to come through, so you focus is on the music and the hardware will seem to disappear.
In Greek mythology, Leto is the mother of Apollo.
“The Zesto Audio Leto 1.5 Vacuum Tube Preamplifier bests the 1.0 in features and in every parameter I can think of. It hosts improvements in the highs, mids, and bass which will mightily please audiophiles.” Read entire review
“Not every electronics manufacturer is taking the plunge to offer an outboard headphone amp however. Remember when a headphone input could be found on virtually every preamp and receiver? Well, Zesto Audio has taken this to heart and added a headphone amp with front panel input to it’s upgraded Leto 1.5 tube preamp ($7500 pictured below). After listening to the MrSpeakers new Ether planar headphones ($1499) with a well regarded tube headphone amp I switched to the Leto using the same WyWires Red series cable. The difference in spaciousness, air and top end transparency was astonishing. The sound was less between the ears and more convincingly on a dimensional stage at eye level.”Read entire review
Download the guide scroll to see Zesto Audio on pages 74, 75 and 76.
“New from Zesto Audio comes the tubed Leto Preamp, pushing the envelope in value and performance in its price range and beyond. With styling similar to the Andros Phono stage, the Leto is a powerful sounding, highly detailed, fantastically quiet, and superbly musical masterpiece that will complement the finest systems. Designed by a brilliant and pragmatic designer who knows great sound and ergonomics, the Leto performed like a thoroughbred in every way musical, and was a joy to control and adjust. The fun factor while working with the Leto made me rethink what has been missing in minimalist preamps that cost even more money these days. What a jewel! The Zesto Audio Leto is a killer design to my way of listening and loving recordings, and may just be the preamp you will buy and keep for the very, very long haul. The Leto receives my highest recommendation.”
“I have spent many hours listening to the Leto and Andros combination at Wes Bender’s NYC/Studio. I have also listened to the Leto with the EAR 324 phono stage. The sound of the Leto is on the warm side of the spectrum but not so much as to be in any way objectionable. To be clear, this is not an ‘old school’ tube sounding amplifier. From top to bottom, the sound is very well balanced. It has enough resolving power to allow vocal and instrumental textures to be clearly heard. The Fairfield Four’s Isaac Freeman’s bass vocals are presented with their full richness, bloom and textures intact. I have heard this group’s vocals on other line stages that glossed over these details resulting in a bland presentation. Not so with the Leto”.
Zesto was also using TAD CR1 speakers for the debut of their new Leto tubed line preamplifier ($7500, top), which, like the Andros phono stage (bottom), is made in the USA. With a system comprising a Gamut D200 power amp, a Merrill Williams turntable fitted with a Triplanar arm and a Dynavector XX2 Mk.II cartridge, a Lindemann DAC fed data from a PC running J River software, with WyWire cables used throughout, the Ozawa performance of Mahler’s Symphony 1, with the Boston Philharmonic on a typically bright-sounding DG LP, had me sitting for the entire first movement, so low was the noisefloor and so high the dynamic range. AC power was being conditioned by Spiritual Audio’s VX-9 power conditioner.
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