NAD M22 with Purifi 1ET400A modules

[unexperienced]

Greetings to all!

I want to ask the advanced self-builders. What will happen if you install Purify 1ET400A modules in NAD M22, which has Hypex NC400 OEM modules. What do you think about this?

Pin of Hypex NC400 OEM in NAD M22



is same as pin of:

1) NC500 - Hypex Electronics B.V.
2) 1ET400A - 1ET400A - PURIFI

NAD M22 has a smps +/-64Volt.

Service manual for Nad M22 with shematic:

NAD M22 SERVICE MANUAL Pdf Download | ManualsLib

 

[Diomedian]

According to TomChr, the pinout between the modules isn’t exactly the same. See here: https://www.diyaudio.com/forums/vendor-s-bazaar/351387-purifi-1et400a-hypex-nc500-input-buffer.html#post6127351
Whether this is a problem or not, I don’t know.

 

[unexperienced]

pin 28,33,34 -NC-not connected in 1et400a, in NAD M22 pin 28 also - NC. Pin 33,34 are connected to bi-color led, which only indicate overload. I think it is no problem, if we will not see this lights.

 

[tiefbassuebertr]

Greetings to all!

I want to ask the advanced self-builders. What will happen if you install Purify 1ET400A modules in NAD M22, which has Hypex NC400 OEM modules. What do you think about this?

The actually question is, what are the differences in sonic character between both Class-D power amp units ?

 

[xman2005]

I already tried installing the 1ET400A into the M22, but it didn’t work—the power amp didn’t turn on. The NC500OEM didn’t work either. I think it might be due to different I2C addresses.