Aqua HiFi Formula xHD DAC - Suncoast Audio
Por un escritor de hombre misterioso
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The Formula DAC is the first in the aqua’s production to show a proprietary D/A conversion system, that we name Optologic. The signals sent to the resistor ladders are generated by a proprietary digital circuit, implemented inside an FPGA (Field Programmable Gate Array). Formula has a sign-magnitude converter structure, and this requires not two but four 24 bit resistors banks, each one made of very low tolerance discrete resistors. Aqua believes that the more musical D/A conversion system is based on the circuit usually identified as "resistor ladder." This technology has been substituted in the mass-market by the so-called sigma-delta converters. The sigma-delta converter is a near-completely digital circuit and for this reason it can be can be integrated on silicon and produced at low-cost. A quality resistor ladder DAC instead uses a circuit based on a set of high
![](https://www.fidelity-magazine.com/wp-content/uploads/2022/07/aqua-formula-xhd-08.jpg)
Aqua Formula xHD DAC - Fidelity Magazine
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Aqua LinQ - Suncoast Audio
![](https://www.fidelity-magazine.com/wp-content/uploads/2022/07/aqua-formula-xhd-11.jpg)
Aqua Formula xHD DAC - Fidelity Magazine
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Aqua Formula xHD Optologic Modular DAC
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Aqua HiFi Formula xHD DAC - Suncoast Audio
![](https://www.hifi-advice.com/blog/wp-content/uploads/2019/11/Aqua_output_board_v2_IMG_8532_550pix-550x367.jpg)
Aqua Formula xHD v2 Output Board upgrade HFA - The Independent Source for Audio Equipment Reviews
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Aqua HiFi Formula xHD DAC - Suncoast Audio
![](https://www.hifi-advice.com/blog/wp-content/uploads/2019/11/Aqua_output_board_v2_IMG_8531_550pix-550x395.jpg)
Aqua Formula xHD v2 Output Board upgrade HFA - The Independent Source for Audio Equipment Reviews
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Magico M6 - Aqua Formula xHD rev.2
![](https://6moons.com/audioreviews2/aqua2/3.jpg)
6moons audioreviews: Aqua Hifi Formula DAC
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