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Aussie Mick View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Aussie Mick Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 6:30am
Rega RP8 - Apheta 2 - Accession MC Enigma PS -Solo ULDE (Focal Utopia) - PS Audio M700 - Fical Kanta No2
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 8:58am
Originally posted by Aussie Mick Aussie Mick wrote:

Have a listen to this. 


Cheers,
Mick

It's not every day you see the same AP we use

APX525 image by Darko

(image courtesy Mr Darko's website)

Now getting on for £15,000 (plus VAT), it cannot tell you how the D.U.T. is going to sound!

By the way, neither can it tell you anything without having a rather powerful PC connected to it, running AP's software.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bags Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 9:38am
Thanks Mick.

Interesting video.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 10:01am
James Kelly

Audio Precision's James Kelly (ex head of testing at IAG) demoing the audio analyser options to us in our test department around seven years ago.

Already on our test shelf is an ATS-1A, and James is demonstrating the AP-2700 against the APX525, by measuring our Majestic pre-DAC in both analogue and digital domains.

The ATS-1A now serves as the 100% production analyser in John's workshop, while the APX525 serves as R&D analyser in my workshop, and is sometimes called on to put Majestics and Bitzies through their paces.

John and I have been using audio analysers since 1989 when Neutrik Liechtenstein made a 'big' analogue analyser. We also used Lindos and WK analysers at YRN. The WK (https://www.waynekerrtest.com/history.php) retired to my workshop in the late 90s and was used in 100% testing of my first products, 1999 to 2006, when the ATS-1A took over testing duties. Whereas the ATS-1A requires recalibration, the APX525 is self calibrating through software.

Along with Audionics' Phil Davies, we've tested a good proportion of the UK's commercial radio stations, BBC analogue desks, as well as projects for Independent Television companies.

I await to hear of the Audio Science Review Forum's equivalent experience.

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Post Options Post Options   Thanks (1) Thanks(1)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 10:10am
May as well watch the video here:

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 11:19am
At 38:55 "No one publishes distortion numbers at let's say 1/4 watt output or 1W output"

See my 1970s Design Indulgence topic!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BAK Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2021 at 7:14pm
and


So true,
 But Graham's measurements are honest representations of a device's performance.

AND, he does a sound quality test by playing real music to make sure a unit sounds good.



Edited by BAK - 20 Jun 2021 at 7:16pm
Bruce
AT-14SA, Pickering XV-15, Hana EL, Technics SL-1600MK2, Lautus, Majestic DAC, Technics SH-8055 spectrum analyzer, Eminence Beta8A custom cabs; Proprius & Reflex M or C, Enjoy Life your way!
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