wink

This is what I used to calibrate Pity the AC only goes to 10kHz. http://www.adler-instrumentos.es/imagenes_web/productos/52120A%20Transductance%20Amplifier.pdf

I like the blue.....

Looks like the Microchip version is just a Supertex device with their own branding The only difference I could find is the document version. Supertex = Version E051509 Microchip = Version F111010 From Octopart, the datasheet link for the Supertex device sends you here:- http://datasheet.octopart.com/DN2540N8-G-Supertex-datasheet-14062240.pdf From Octopart, the datasheet link for the Microchip device sends you here:- http://datasheet.octopart.com/DN2540N8-G-Microchip-datasheet-27836262.pdf From the Microchip site the datasheet is:- http://ww1.microchip.com/downloads/en/DeviceDoc/DN2540%20B060313.pdf which is exactly the same document as the one just above. Both are Supertex Doc. #:DSPD-3TO243AAN8, Version F111010

G600, Methinks it would also be a good idea to remove the flux from the board as a matter of concern. At these voltages, it's very advisable to limit the chances of leakage between connections caused by the flux.

The M12 is a preamp and DAC. The C510 is the replacement for the M51 and it has the volume control on front instead of via the remote.

Perhaps, a visit to an audiologist is indicated..... I kid, I kid....

Lots of ways to skin this cat.

Get in touch with A2A and see if George will do us antipodeans a favour....

Happy birthday and don't spare the Himalayan rock salt

Like what?

Go for speakers.

He's 30 years old... His GF is thinking of trading him in for 2 x 15's

Happy birthday Tom. Hope you are enjoying your speaker set-up. https://www.youtube.com/watch?v=MrXBATtOtFY

Get the Yggy.

I used to cal them for about 20 years. The first handheld flukes had a problem with the LCD displays when used in highly humid conditions and we used to replace them with tropicalised dilsplays. Nowadays they are just excellently built throughout. The funny thing was, some (and only some) of the cheaper multimeters were more accurate than the flukes, but they seemed to only last a few years and they never showed up for calibration. The Flukes used to show up regularly for years unless they met with an accident like being run over by a tank or dropped from a very great height.

Have you checked the AC voltage out of the transformer without it being connected to the power supply board?

I love the way we can read between the lines......

You mean, you can tell a mongrel from a purebred in 15 minutes...? I thought they were all mongrels....

Looks like I will have to give these a miss......

Because we're not all stumping up for the new Sennheiser HE-1060, or Hifiman HE-1000. he he...!!

Happy birthday, Dinny btw, get yourself a YGGY and then forget about all the other DACses,,,,,,,

Colonic constipation or Copper Cobalt

Mine arrived safely....... Thanks for all your efforts in this Soren.....

Basic Electronics - Bernard Grob http://www.amazon.com/Grob-Basic-Electronics-Books-Series/dp/002802253X