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  • Allo Revolution DAC Reviews

       (1 review)
    Manufacturer: Allo
    Model: Revolution DAC
    Price $: 259

    The audiophile community is one big family united by the love of music.

     

    There is however, a fundamental split on how we judge audio hardware. One camp (objectivist) swears by THD+N and the opposition (subjectivists) swear by what they hear.

     

    We started Revolution as an attempt to unite both camps.

     

    Objectivist side:
    Revolution THD+N is -114.5. However, look closer. THD is the main problem since N (noise) is always around us and as such human ear/brain can tune it out. THD of Rev is at around -122 to -124 making this one of the best tested DACs (unbalanced outputs) in the world. 20Hz to 20Khz THD stays same (does not rise).

     

    Subjectivist side:
    Great THD numbers do not exclude great sound quality.

    Revolution DAC was subjectively tested for many months and delayed until we were satisfied with SQ. What we have found out is that some practice (like audiophile caps in opamp rails) indeed increased the SQ, and we were able to see small reduction on harmonics on THD.

     

    One area of concern was what it’s been referred to as “bright sounds” on Ess DACs. We believe that main reason comes from datasheet implementation and lack of filtering before second opamp (summing). Most designs we see lack this fundamental passive filtering (again they just copy of datasheet) and the HF noise (one parameter, there are others), while it should not be audible, somehow creates this fatiguing sound. We are pleased to say that Rev does not have the bright sound associated with ESS.

     

     

     

    Manufacturer's product page: https://allo.com/sparky/revolution-dac.html




    User Feedback


    uncola

       1 of 1 member found this review helpful 1 / 1 member

    Amazing clarity and detail.  Worked well with inexpensive jays audio linear power supply.  Displaced my modded oppo Sonica dac despite being way cheaper and smaller

    Link to review




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