Directstream serial number?

I’m trying to fill out my trade request for a new Directstream MK2.

Its prompting me to fill in my original units serial number…can anyone tell me where it is. Its not on the back or bottom.

Thanks in advance

On the back.

Paul McGowan | CEO800-PSAUDIO
Boulder, Colorado

I have four dacs, they all look like:

|PS Audio PerfectWave DirectStream DAC (silver)|PWS-A1-4G072642|
|PS Audio PerfectWave DirectStream DAC (silver)|PWS-A1-5C081950|
|PS Audio PerfectWave DirectStream DAC (black)|PWS-A1-4C067013|
|PS Audio PerfectWave DirectStream DAC (black)|PWS-A1-7G111070|

I think it’s the last eight characters that they’re interested in.

Thanks Paul …I found it. Not what i was expecting. Merry Christmas