Do I go from a Primaluna HP Integrated to Schiit Freya+ and a pair of Aegir Amps?

I bought the Aegir based on reviews, together with Freya + . They sound great. They sound better in almost every aspect compared with PrimaLuna prologue one I have: bass, details, space, air, instruments separation, etc. 

However, I have quality issue with the Aegir amp that I have to return them. Here's the full story. 

The Aegir has a 60hz like humming noise from the unit as well as going to the speakers. I tried only connecting the power cord to it (no interconnect, no speaker cables, etc), it still has the humming noise from the unit. Went through psAudio's page for getting rid of humming noise, it does not work for me. https://www.psaudio.com/ps_how/how-to-find-and-fix-hum/

I guess it's due to the quality of the transformer. The sound is not too loud, and might not bother much. But still, I decided to return them.

I hope they can provide better quality transformers and add cost to the price.

It does not feel right as they say the transformer is made in California, and yet the quality is inferior than transformers made elsewhere.

Other observations
- Aegir back panel has too little space to work with. I hope plugs are spaced further apart.
- Freya + runs very very hot, the panel is almost untouchable, and the hottest area is above the transformer, not around the tubes. It's hotter than the Aegir.
- The Freya + has a 128 step stepped attenuator. When using remote or turn manually, it seems has 3 clicks sound every time. I wonder if it goes 3 steps a time or just the sound, or it's just hard to make it one step / one click.

Update 1:
A day later, when I hook them up for last listening before sending them back. The right channel of Aegir is dead. Right channel SE plug had contact issue when I first setup them up, I had to push the plug in harder to make it work. I will not buy their product until I hear some news on quality improvement.