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The Optologic DAC
Our pure R2R Ladder Optologic DAC, fully-floating (isolated) FPGA-based DAC

The Formula DAC is the first in aqua’s history to implement a proprietary resistor ladder conversion system, the Optologic DAC.
The signals sent to the resistor ladders are generated by a proprietary digital circuit, programmed inside a FPGA (Field Programmable Gate Array).
The Optologic D/A conversion system has a sign-magnitude converter structure which requires not two but four 24-bit resistor banks; each one made with low tolerance discrete resistors.
In order to separate the sensitive analog circuits from the digital section, galvanic and magnetic isolation is implemented between the FPGA, and four branches of the R2R ladder converter.
This achieves complete isolation of the entire digital circuit - including clock - from the analogue section resulting in a clean, noiseless, ground plane.
It also serves a critical role in the differential management of the R2R ladders, creating perfect symmetry between the counter-phase halves. The result is the highest tonal contrast and naturalness.


Innovation through Technologies

The absence of digital filtering means no processing of the input signal. The original digital samples are translated to the reproduced sound, preserving the transient shape and avoiding any ringing. 
In this way we also avoid the "intersample overs" problem that is vital to faithful reproduction, considering current recording studio practices.
With our R2R conversion technology the sound is natural, fast, dynamic, and without the sense of compression characterizing others converters. We could say that our effort at aqua is to obtain a sonic result comparable to that produced by a studio master reel-to-reel recorder.
For aqua being able to reproduce the precise temporal response, dynamics and harmony of sound far outweighs technical measurements. After all, achieving "analog sound" is what matters most.
We are continuously experimenting and open to new discoveries which is why our machines are modular and upgradable to accommodate future technology.
Toronto AudioFest 2018
The aqua equipment at the Toronto AudioFest:

• Room 347
• Salon Easton


October 19th to 21st, 2018
Westin Toronto Airport Hotel

Toronto AudioFest website >

Upcoming Events

Formula xHD: Aqua R&D redefines the sonic performance of the Formula DAC
The Formula xHD features the following upgrades and modifications as compared to the Formula DAC:
•    New firmware release 3.0 for the main FPGA (DAC) with optimization of the code
•    New USB board with hybrid architecture cod. A108 | 24 bit / 768 kHz  - DSD256

Read more >
The new S3 | La Voce to the next level.
The La Voce DAC is a modular design, so aqua releases the new D/A conversion module for La Voce S3 with Discrete R2R Ladder DAC architecture.
Owners of original La Voce can upgrade to La Voce S3 Discrete DAC.

Read more >
La Scala MKII - Optologic DAC upgrade
Update your device

A never ending story. Again, La Scala D/A converter proves that an instant classic does not mean a product whose destiny is to become obsolescent, like most of the products in the high-end world.
After the first appearance in the flagship Formula DAC, the proprietary D/A conversion system developed by aqua is available for La Scala MkII dac.
So, current Owners, have now the opportunity to upgrade their unit in order to reach to the revolutionary Optologic D/A conversion system.

La Scala MKII Optologic DAC >