The price is right....or is it?

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Originally Posted by DSJR

Does this help - featuring my very own Croft preamp before being sold to me :) ......

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Thanks Dave I have seen those, with accurate feedback eq, that's why I was surprised at my findings with the 25R.

Alan

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Originally Posted by Techno Commander

Hence why I look to the pro audio industry for inspiration and equipment.

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+1 from me...!

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Originally Posted by Marco

Cheers for the info, Dave. You know me with measurements, though... I don't really give a toss. Ultimately, it's about what sounds best! :)

Marco.

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Such an excellent statement...!

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Originally Posted by Haselsh1

Such an excellent statement...!

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If it sounds good and measures good- then it's good. If it sounds good and measures bad- you're measuring the wrong thing.

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Originally Posted by Firebottle

After further research I now know that Glenn uses passive equalisation in the 25R but way off standard RIAA curves.
The lower turnover of usually 3180 uS is something like 5700 uS, whilst the upper turnover is way less than the normal 75 uS, or even 50 uS.

No wonder there was a tonal difference :eek:

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I suppose it's one way of re-mastering vinyl.

Someone with a new croft preamp should just measure it if they're bothered.
What I can say is that in the past, when I've compared cd vs vinyl of the same recording, synchronised and level matched, I could detect no tonal anomalies whatsoever when switching between the two.

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Originally Posted by Firebottle

After further research I now know that Glenn uses passive equalisation in the 25R but way off standard RIAA curves.
The lower turnover of usually 3180 uS is something like 5700 uS, whilst the upper turnover is way less than the normal 75 uS, or even 50 uS.

No wonder there was a tonal difference :eek:

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Have you tried using a 4-pole filter with the Neumann time constant?

No but then I don't need it as my eq is not the one in error.
I found the published results from Stereophile and the measured curve is quite wrong: http://www.stereophile.com/content/c...r-measurements

Marco - I found an earlier posting saying your Charisma was measured flat to 100KHz by AnthonyTD, I assume that includes the RIAA so no worries :)

:cool: Alan

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Originally Posted by Firebottle

Marco - I found an earlier posting saying your Charisma was measured flat to 100KHz by AnthonyTD, I assume that includes the RIAA so no worries :)

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Indeed, Alan. It'd have been from the last time the amp was on Anthony's test bench.

Incidentally, don't get me wrong, I wasn't 'worried' if the RIAA curves Glenn had used were different from standard (far from it!) I was merely suggesting that, if that were the case, it might partly explain why the phono stages in Croft preamps always sound so superb, and better than many others.

Therefore, if Glenn had deliberately 'voiced' his phono stages in that way, by tweaking the RIAA curves, then as far as I was concerned, he was to be APPLAUDED (for the quality of his ears), not derided! ;)

I always admire audio designers who push the boundaries and challange 'currently accepted wisdom', not simply pander to what text books say is 'correct'...

Marco [who couldn't give a tinker's cuss about 'correct measurements', as long as it sounds good].

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Originally Posted by Marco

..... and challenge 'currently accepted wisdom'...

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With that, like not needing any exotic components...oh hang on that's another one of Glenn's as well isn't it?

:cool: Alan