{"product_id":"zesto-audio-andros-tessera-reference-phonostage","title":"Zesto Audio Andros Tessera Reference Phonostage","description":"\u003ch1\u003eZesto Audio Andros Tessera Reference Phonostage\u003c\/h1\u003e\n\u003ch3\u003eAll-tube phonostage using 12DW7, 12AX7, and 12AU7 tubes, with an external ESP power supply \u003c\/h3\u003e\n\u003cp\u003eAfter over a year of R\u0026amp;D, Zesto Audio is proud to announce the T-REF as it's fondly known around their shop. The Andros Téssera Reference Phonostage is a complete internal redesign of the original Téssera. An upgrade path for \u003cspan data-mce-fragment=\"1\"\u003eTéssera is available. Contact us for details.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe challenge was to make it better than the Deluxe, and Zesto is so confident it has succeeded that it did not hesitate to use the \"Reference\" label. Says Zesto, \"It’s quieter, it’s more musical and the detail from the groove is astonishing.\"\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe Reference features improved dynamic range and ability, higher power and gain, more finessed adjustable options.\u003c\/p\u003e\n\u003cp\u003eThe T-REF accomodates four tonearms, allowing one MM and one MC per channel. All settings are saved as you switch between channels, and all adjustments have their own external switches or knobs. There are four superior quality MC step-up transformers, and a three-position switch for high-, medium-, and low-gain cartridges. The high-quality output transformers are driven by dedicated 12AU7\/ECC82 output tubes\u003c\/p\u003e\n\u003cp\u003eEvery unit is handbuilt right here in California, and there is a 50-hour burn-in on all circuits and vacuum tubes before final testing. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe T-REF comes with a two-year limited warranty and a six-month warranty on the vacuum tubes.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eReference Upgrades\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNew external ESP Supply using three toroids and new circuits\u003c\/li\u003e\n\u003cli\u003eNew tube complement using 12DW7 tubes, as well as, 12AX7 and 12AU7\u003c\/li\u003e\n\u003cli\u003eNew PCB, new circuit design with new optimized components, and new grounding\u003c\/li\u003e\n\u003cli\u003eGain increases up to 7 dB\u003c\/li\u003e\n\u003cli\u003eMore power, going from 52 W to 60 W\u003c\/li\u003e\n\u003cli\u003eHigher voltage, going from 250 V to 300 V\u003c\/li\u003e\n\u003cli\u003eMore efficient standby power that reduces the drain from 7 W to 0.5 W\u003c\/li\u003e\n\u003cli\u003eNoise levels reduced from -90 dB to -95 dB\u003c\/li\u003e\n\u003cli\u003eDynamic range increases from 108 dBV to 116 dBV\u003c\/li\u003e\n\u003cli\u003eMaximum output improved from 8 V RMS to 12 V RMS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMM Specs\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eImpedance:\u003c\/strong\u003e 47 kOhm or 68 kOhm\u003cbr\u003e\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 220 pf\u003cbr\u003e\u003cstrong\u003eGain (dB):\u003c\/strong\u003e 47, 51, 55\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMC Specs\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eImpedance Settings (Ohm):\u003c\/strong\u003e 1000, 800, 700, 500, 400, 350, 300, 250, 200, 150, 100, 50\u003cbr\u003e\u003cstrong\u003eGain (dB):\u003c\/strong\u003e\u003cspan\u003e 6\u003c\/span\u003e5, 70, 75\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e 600 Ohm\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube Complement:\u003c\/strong\u003e 4 x Gold pin JJ ECC83S\/12AX7, 4 x  JJ ECC832\/12DW7, 2 x Gold pin JJ ECC82\/12AU7\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (WDH)\u003cbr\u003eMain:\u003c\/strong\u003e 17\" x 15\" x 5.5\"\u003cbr\u003e\u003cstrong\u003ePSU:\u003c\/strong\u003e 17\" x 8\" x 5\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight (Main, PSU):\u003c\/strong\u003e 27 lb, 18 lb\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3\u003e\u003c\/h3\u003e","brand":"Zesto Audio","offers":[{"title":"Default Title","offer_id":40413223977144,"sku":"ZA ANDROS T-REF","price":19900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/T-Reffront.jpg?v=1741630798","url":"https:\/\/upscaleaudio.pro\/products\/zesto-audio-andros-tessera-reference-phonostage","provider":"Upscale Audio","version":"1.0","type":"link"}