DAC - Aqua Formula or Aqua La Scala

The Aqua Hifi’s La Scala MKII Optologic DAC uses 2 ECC81 tubes in its analog section.  I was told the life of these tubes is around 10,000 hours (?).  When you are finished listening to the DAC, do you turn if off or leave it on?   What is the impact of the turning on and off have on the tubes?  Or, does the DAC have a standby feature that reduces the current to the tubes?  Please explain how this works?

How hard is it to change the tubes?   Are replacement tubes easy to find?  How do you know when the tubes need to be replaced?   

Any other comments on the Aqua Hifi’s La Scala MKII Optologic DAC?   I like the La Scala MKII DAC but, as you can see from my questions, I have concerns with its tubes.  Thanks....

@hgeifman I have a La Scala. I turn off the unit after listening. There is no stand by. I wouldn’t be turning it off and on multiple times a day, as that may shorten tube life over a long period.

It is not hard to change the tubes. You need a Hex 2.5 mm allen wrench, there are 12 small screws that hold the cover on. Lift the cover off and you have access to the tubes.

Replacement tubes are 2 12AT7 small signal tubes, easy to find. I am using Psvane new production tubes to good effect. I ordered them from Grant Fidelity.

The stock tubes in my La Scala were still going strong after 2 years, and I listen 4-5 hours a day.

Being a dealer and getting to hear them both, it is really a matter of taste. Much like fine wine or Cuban cigars. I do believe the La Scala is the bigger bang for your dollar.
Best Regards, Mike
Gestalt HiFi

24 West Sunlit Drive

Santa Fe, NM 87508

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www.gestalthifi.com

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