Eddie Current Studio 45 Custom Headamp Measurements

Discussion in 'Headphone Amplifier Measurements' started by purr1n, Oct 24, 2020.

  1. Psalmanazar

    Psalmanazar Most improved member; A+

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    True. I meant imd from shitty even in the 80s opamps sounds worse than tubes.

    Izotope and Ozone are the noise gates of today. Gating kills drums. Lots of pop and edm guys use ozone on every track.
     
  2. atomicbob

    atomicbob dScope Yoda

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    I'm going to suggest that 30+ sines at -20 dBu will produce an aggregate of approximately -5 dBu RMS. For an HD6x0 or HD800 or HE500 that will be around 95 dB SPL at the ear of the listener. This adds to your comment of being unrealistic. Who wants to be wearing hearing aids at a relatively young age. So testing levels that better represent actual use case are more reasonable. EC Studio 45 residual IMD will be below your lower graph limit if tested with signal generator set 15 dB lower for a use case of approximately 80 dB SPL
     
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  3. purr1n

    purr1n Finding his inner redneck

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    Very true. I just wanted to make sure in case an audio scientist made the argument for peak signal distortion for folks who like to listen at loud volumes. I'll crank it up on occasion myself, but not for long periods of time. Even less so now at my age when things start going downhill.
     
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  4. atomicbob

    atomicbob dScope Yoda

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    You forgot the quotes around the adjective noun combination in your case statement.
     
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  5. Xecuter

    Xecuter Brush and floss your amp twice a day

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    My studio (tribute) is with Craig currently if you would like to measure it Marv? It's 240 volt though.
     
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  6. will_f

    will_f Friend

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    Probably the best explanation of noise and distortion measurement significance I’ve read. Thanks for that. Answered some questions regarding IMD I’ve been curious about for a while. I am also curious to know audibility thresholds for ringing associated with square wave reproduction. @atomicbob posted some impressive performance measurements for the Cavalli liquid gold, which are undoubtedly better than any of my amps, but is it audible?

    will
     

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