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Zesto Leto 1.5 Linestage Preamplifier


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The Leto is available with headphone amp or balance control

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A little background info…

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.





  • 5 Inputs
  • 3 sets of Single Ended inputs with an impedance of 100K Ohms
  • 2 sets of true Balanced transformer inputs (pin 2 hot) with an impedance of 10K Ohms
  • Maximum peak input level of 5 Volts RMS


  • NEW 1/4 TRS inch headphone jack
  • 4 Line outputs
  • 2 sets of true Balanced transformer outputs (pin 2 hot) with an impedance 150 Ohms
  • 2 sets of Single Ended outputs with an impedance 150 Ohms
  • Maximum peak output level of 10Volts RMS +20dB
  • Independent ground lift switches on the left and right Single Ended outputs
  • 1 set of Single Ended Cinema bypass outputs from input #1

Detailed Specifications

  • NEW unity gain volume indicator for home theatre surround sound integration.
  • Frequency response 10Hz to 50Khz ~ 1dB
  • Distortion ~ 0.02% at 1V RMS input
  • Gain 12dB
  • Signal to noise ~ 100dB below operating level
  • Non-inverting output polarity
  • Cross talk >90dB
  • Front panel adjustable balance control
  • Remote control volume, mute and mono
  • Remote bypass switch on the rear panel (just in case the remote is misplaced)
  • 1% metal film resistors throughout
  • Polypropylene capacitors throughout the audio path


  • Power consumption 27W, 0 drain when off
  • Voltage 110/120V AC 60Hz
  • Optional factory installed 220V or 230/240V AC 50/60Hz
  • Standard 3 pin IEC power connector
  • ON/OFF power switch conveniently located on the side panel
  • Two internal high quality linear regulated power supplies, 250V and 12V

Vacuum Tubes

  • Two (2) Gold pin JJ ECC83S/12AX7
  • Two (2) Gold pin JJ ECC82/12AU7
  • High-quality gold pin ceramic sockets

Other Features

  • Each unit is hand made in the USA
  • 50-hour factory burn in on all circuits and vacuum tubes
  • Dimensions 17” W X 12” D X 5” H
  • Weight 23 lbs.
  • 16 gauge zinc plated steel enclosure
  • Two year limited warranty
  • Six months warranty on Vacuum Tubes
  • Recessed RCA and XLR connectors are Gold plated with an isolated ground.
  • All switches and knobs are easily accessible, nothing is hidden inside to adjust.
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