Jump to content

Aqua Acoustic La Scala DAC - Black Mar '23

Recommended Posts

Item Condition: AUS stock Excellent condition 2/3/23
Shipping Options: Pickup available but audition is not available.,Shipping is included in price.
Suburb or Town: Teneriffe
State: QLD
Payment Method: Paypal EFT Cash on pickup
Reason for selling: Downsizing

One of the best DACs at any price point - Mar 2023 - all original packaging/receipt - stock tubes (so not opened!)


La Scala MKII Optologic DAC
New Optologic Conversion System

A never ending story: upgrading to the Optologic DAC

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 now available for La Scala MkII dac.
So, current Owners, have the opportunity to upgrade their unit in order to reach to the revolutionary Optologic D/A conversion system. 
The already extraordinary sound quality of this icon is now improved in every aspect: time coherence, microdynamics, timbre, and without losing that magic atmosphere for which La Scala is widely renowned.
La Scala MkII keeps the VALVE / MOSFET hybrid circuitry, with now a pair of specially selected ECC81 tubes - a High-Frequency triode - for its extremely low noise and superb transparency.

the new Optologic Conversion System

• High performance proprietary FPGA-based digital decoding without digital filter

• Galvanic and magnetic isolations between the FPGA and R2R ladder converter

• Discrete R2R ladder DACs with low noise precision resistors

• Jitter free digital interface AQlink (I2S protocol), uncompromising digital connection to La Diva cd transport

• Zero S/PDIF Jitter design, digital receiver stage PLL (phase locked loop) technology

• High-performance AQ Discrete Regulator (MOSFET, J-FET, BJT) for analog and digital DAC’s power supply

• Valve-Mosfet direct coupling analog stage in pure class-A without negative feedback

• MOSFET Virtual battery circuit for analog anode supply

• Soft-start power up for extended tube life

• etherCON RJ45 (AQlink) input connection, employs CAT6 cable can connect both RJ45 and professional etherCON RJ45

• 2 separate low noise power transformers, one for the analog and one for the digital section

• MODULAR DESIGN with upgradeable multi board system

• Regulated DC filament supplies with soft start for tubes

• Fully discrete analog stage, not even a single Op-Amp is used

• Proprietary USB Firmware / driver :
Apple MAC OS - Linux OS : USB asynchronous native support, no need to install drivers software

• Fully upgradeable asynchronous USB module with resolution 44.1kHz to 384kHz PCM up to 24 bits, DSD64, DSD128, operates with computers running OSX 10.7 and above, WINDOWS 10 , 8 , 7 and XP ASIO - WASAPI bit perfect high-speed

• Digital phase selector on front panel

• High-quality parts selected for sound quality:
   - 105° long life capacitors
   - low noise Metal Foil ultra-precision resistors
   - double metallized film pulse capacitor
   - ultra-fast diodes
   - halogen free cables

• Aluminium anti-resonant cabinet with Nextel

• Designed and handmade in Italy

• Input:
- RJ45 AQlink (I2S serial bus) - PCM 24 bit / 384kHz – DSD64, DSD128 via DoP
- BNC coax (S/PDIF) 75 ohm  -  PCM 24 bit / 192kHz – DSD64 via DoP
- RCA coax (S/PDIF) 75 ohm  -  PCM 24 bit / 192kHz – DSD64 via DoP
- AES/EBU balanced 110 ohm  -  PCM 24 bit / 192kHz – DSD64 via DoP
- USB port  -  PCM 24 bit / 384kHz – DSD64, DSD128 via DoP

- AT&T (ST Fiber) -  PCM 24 bit / 192kHz – DSD64 via DoP (optional)

• Analog output:
- RCA single-ended
- XLR balanced with transformer
• 5-year warranty

Digital to analog conversion type
Proprietary Optologic D/A conversion system
Pure R2R ladder - FPGA (Field Programmable Gate Arrays) based without digital filter
Supported Native Sample Rates
AQlink / I2S serial bus  - USB PC Audio : 44.1kHz to 384kHz PCM up to 24 bits
DSD64, DSD128
Supports DSD via DoP on all inputs
DAC architecture
Multibit sign magnitude R2R ladder (upgradable)
Asynchronous USB (High Speed)
USB Audio Class 2 with Type B connector
Digital Receiver
PLL (phase locked loop) technology 128 or 256 FS internally selectable
AQlink (I2S bus)
CMOS level
Oversampling factor
Digital inputs
- RJ45 AQlink (I2S serial bus) - PCM 24 bit / 384kHz – DSD64, DSD128 via DoP
- BNC coax (S/PDIF) 75 ohm  -  PCM 24 bit / 192kHz – DSD64 via DoP
- RCA coax (S/PDIF) 75 ohm  -  PCM 24 bit / 192kHz – DSD64 via DoP
- AES/EBU balanced 110 ohm  -  PCM 24 bit / 192kHz – DSD64 via DoP
- USB port  -  PCM 24 bit / 384kHz – DSD64, DSD128 via DoP
- AT&T (ST Fiber) -  PCM 24 bit / 192kHz – DSD64 via DoP (optional)
Analogue Outputs
UNBAL 2 RCA Output 2.2 V RMS
BALANCED ( passive transformer's symmetrical ) 2 XLR Output : 2.2V RMS
Output Impedance
100 ohm RCA - 600 ohm XLR
Load Impedance
10 kohm (min.) RCA - 600 ohm XLR
Frequency Response
20Hz to 22kHz +0.5dB/-0.5dB
Phase Response
Linear phase
<0.1% 1KHz -20dB
Front Panel
Power, input selector, Phase Invert switch
Power Consumption
100-115V / 220-240V; 50 or 60Hz - 58VA
( W x D x H ) 450 x 370 x 100 mm
9 kg
Front finish
Satin Alu Silver or Satin Black
Case finish
Grey Nextel powder coated







  • Like 1
  • Love 2
Link to comment
Share on other sites

Two friends and myself each own (from new) Aqua La Scala Optologic MkII DACs.

Compared to other DACs that retail for over $10K, the La Scala has to my ear a more pleasing organic warmth and solidity to the music.

It has an engaging and emotional connection. The other high end DACs, to my listening are too filtered, thin, clinical, and unemotional.

This DAC is the current model and retails for approx $12K. After I rolled an early '60 diamond bottom Telefunken tube, the sound to my mind instantly made this  worth a $25K DAC.

Then, after rolling a early '50s Mullard tubes, by the sound performance alone, it ought to be worth $50K (based on the sound performance alone- soundstage, timbre, tonal density improvements).

For those with all solid state in their system, this DAC really helps bridge the gap and introduce the best aspects of the analog seduction.


My mates system with the La Scala DAC (early '50 Mullard tube in his system). Listen if possible on high res and with headphones.


Edited by Silver Audiophile
  • Like 2
Link to comment
Share on other sites

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...
To Top