Andros Tessera

About the Andros Tessera

The Zesto Audio Andros Tessera is a premium tube phonostage designed for audiophiles requiring exceptional sound quality and flexibility. It features two completely independent dual mono channels (A and B), each capable of handling two tonearms, allowing up to four tonearms total with separate moving magnet (MM) and moving coil (MC) inputs. The unit offers multiple gain settings (MC: 60dB, 65dB, 70dB; MM: 40dB, 45dB, 50dB) and a 12-position MC load control per channel (ranging from 50 to 1000 ohms). It uses high-quality vacuum tubes (4x ECC83/12AX7, 2x ECC82/12AU7) and a dual-chassis design with an external power supply to minimize noise and interference. The Andros Tessera delivers a dynamic range of 108dBV to 116dBV, noise levels as low as -95dB, and maximum output up to 12V RMS for greater headroom. It includes transformer-balanced XLR and RCA outputs, true floating ground, and extensive grounding for noise reduction. The chassis is made of 16-gauge zinc-plated steel, with dimensions of 17" x 15" x 5.5" for the main unit and 17" x 8" x 5" for the power supply, weighing 25 lbs and 17 lbs respectively. It is handmade in the USA with a 50-hour factory burn-in and comes with a two-year limited warranty.