I don’t have a 440 Pro, but for what it’s worth, both of my amps display PSU 6.4 BL 2.9. It is similar for IHM, both BL 7.4.
I have an early 1000 Pro.
Welcome to the forum, by the way!
I have an early 1000 Pro.
Welcome to the forum, by the way!
1000 Pro - KEF Blade - iFi Zen Stream - Mutec REF10 - MC3+USB - Pro-Ject Signature 12