{"product_id":"kelso-signature-dac","title":"Kelso Signature Dac","description":"\u003cp\u003eThe AAS DAC 4.4 is an homage past tube base R2R DACS\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOur DAC strategy calls for a Resistor Ladder DAC architecture as opposed to the more common Delta-Sigma computer processing style DAC. Rather than using feedback loops and high frequency oversampling clocks. R-2R DAC turn on each required bit in the digital ‘word’ and the exact amount of current will flow from the chip to reconstruct the analog waveform. The method is perfect in its simplicity is closest to an analog sound.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNoSpacing\"\u003e\u003cspan\u003eThe IV \u003c\/span\u003etransformers are proprietary to ampsandsoudnand tuned considering the total performance of the dac. \u003cspan\u003e \u003c\/span\u003eDelicate analog\u003cspan\u003e  \u003c\/span\u003ecurrent signal that comes out of the AD1865 chip is run through a high quality resistors to create a voltage representing the audio signal – this signal is then transferred through a 1:1 ( I\/V ) transformer which allows this ultra delicate signal to land on the line stage fully intact. Our approach doesn’t just chose the closest best choice based on a spec sheet but both measured performance and extensive listening tests to pic the final design that expresses our voice and yields max performance.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOnce past the IV transformers the audio signal is amplified in the output tube stage which comprises of a 12au7 input tube and an ECC99 output stage.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe final part of the output stage is our custom output transformers. For those who know ampsandsound reputation for custom absolutist transformers, these outputs are no different. They are wound by the same team that winds outputs for our amps and places tone and performance above all else. \u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"text-align: left;\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"text-align: left;\"\u003eOutput tubes: 12au7 \/ ecc99\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"text-align: left;\"\u003ePower Supply 6×5, ecl82\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"text-align: left;\"\u003eLine stage – Jupiter copper film\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"text-align: left;\"\u003eDAC Board CS8414 receiver , AD1865 analog conversion\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"text-align: left;\"\u003eIV transformers with nickel core laminations\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOutput transformers 200% oversized and wound with significant interleaving for extended frequency response.\u003c\/p\u003e","brand":"ampsandsound","offers":[{"title":"Default Title","offer_id":62749638918225,"sku":null,"price":14000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/4719\/files\/ampsandsound_product_shot_high_qualitycopy.jpg?v=1790548063","url":"https:\/\/ampsandsound.com\/products\/kelso-signature-dac","provider":"ampsandsound","version":"1.0","type":"link"}