You claim this preamp implements the IEC rolloff, yet also admit the -3 dB point is 13 Hz. It's quite well known that the IEC amendment does not specify a -3 dB frequency of 13 Hz, but 20 Hz. See Keith Howard's article here. Seems a bit odd that a $60,000 phono preamp could miss the IEC time constant by 35 percent doesn't it?
Per Keith's article, there's a pretty good consensus that the IEC amendment shouldn't be followed in the first place, so in that sense, being -3 dB at 13 Hz is better than -3 dB at 20 Hz as the IEC amendment specifies I suppose.
But I think the claim of this preamp implementing the IEC rolloff is bogus, just an excuse for an absurdly priced component that doesn't measure well, likely due to a coupling cap somewhere that's too small. The numbers don't add up to a true implementation of the IEC rolloff. If it were such an implementation, it would be -3 dB at 20 Hz within a tenth of a dB or so.
Dear Andy: IMHO JA has to protect " at any price " both: Vitus and MF reviewer mistakes. MF review has no-sense in front of measured evidence and JA comments here and in the magazyne are really " corrupted " because does not reflect the reality, he is diminished the whole subject and does this on purpose: a shame for say the least but it is in this way that AHEE handle things and that's why not only Stereophile goes down ( as other magazynes too. ) but that's why the audio industry goes in that same way.
Btw, way before appeared the October STP number I posted that we for sure will read in this October number that the Vitus will be on Class A ( class A+ indeed!. ) even that does not deserve that but and they did it. How MF/JA could even think that a 60K phono stage could not belongs to class A+?: these people IMHO are not helping any one with this kind of " fake/fraud " audio information.
I'm really disappointed/sad with the whole JA attitude and answers on the subject: I know he is a lot better than that but like I said at the begin of this post: he has to protect " at any price " and this include his own " credibility ".
Regards and enjoy the music,
Raul.
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