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.
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
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.
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.
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.
To learn more click www.aquahifi.com