Aqua Formula DAC with xHD update Colour:Silver The vacuum tube B+ power

The vacuum tube B+ power supply has choke input and is discretely regulated

energy is lost at every crystalline juncture

The slope of the MID-HI filter can be switched from 12 dB (Butterworth) to 24 dB (Linkwitz/Riley)

well-defined sound makes it better for music than for action movies

Aqua Formula DAC with xHD update Colour:Silver The vacuum tube B+ powerThe Formula DAC is the first in the aquas 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 xHD Rev. 2 Introducing our proprietary Optologic D A conversion system The Optologic R2R conversion system Aqua believes that the more musical D A conversion system is based on