Aqua Acoustics Formula Optologic DAC: Latest Update

18th March 2017

The Formula DAC is the first in the Aqua Acoustic range to offer a proprietary D/A conversion system, named Optologic DAC

I have already featured this DAC  – at least within an interview format – via my National Audio Show 2016 show report. You can hear that interview HERE. More information on the DAC is now available.

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This conversion system follows the same multibit technology (already used in the La Voce and La Scala) but with a discrete R2R resistor ladder instead of Burr Brown PCM1704 DACs

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Galvanic and magnetic isolations are implemented between the FPGA and the four branches of the R2R ladder converter, “This creates complete isolation of all digital circuitry – including the clock – from the analogue section for a pure clean ground plane,” said the company.

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The Formula DAC uses no digital filter, while analogue and digital power supplies are implemented by extensive use of BJT, MOSFET, JFET and ultra-fast diodes.

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With the exception of six electrolytics, all other caps are Tantalum, solid-polymer OS-CON and double-metalised MJP. The signal path itself is direct-coupled and free of all capacitors. The two output stages (one single-ended, one transformer-coupled balanced) use discrete BJT and JFET with metal-film resistors. All the electronics parts show an ultra low RF noise. Price is $13,800.

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To learn more click