In this link it is $1699, though the actual product page is still $1999, looks like they are in the process of updating it. https://store.hifiman.com/clearance-sales

I purchase a final sale Focal Clear from headphones.com, when I asked them they said return is possible in case of manufacturing defect but not for any other reasons.

This is unreal, I guess this price will be the norm soon going by past Hifirman pricing strategy.

I think it's not just the power the Vio is just a better amp with higher quality design and components.

Hifiman HE1000 series pairs well with R2R.

I got a cheap litz cable (80£) from CustomCans and happy with it, I don't know but I feel it increases the clarity a slight bit more compared to the stock cable which you may or may not like with the SE. https://customcans.co.uk/shop/product/balanced-denon-headphones-cable/

Like my LCD-X (2021) with the Mojo 2, I find it has more dynamic slam than HE1000 SE, it sounds better for low dynamic range music (for example many old rock and heavy metal recordings), SE resolves more though and trumps the LCD-X in most parameters if the recording is good.

I said the audio micro-usb port not the charging port 🙂

Just noticed (after couple of hours) I had plugged in the charger to the audio micro-usb port, can it potentially damage the Mojo 2 or there is some built in protection to mitigate such scenarios.

I got this one from aliexpress, quite good for the price actually, the webpage says its made for dual band headphones like HE1K / Arya so can be rested on the metal beam to protect the leather headband. https://www.aliexpress.us/item/3256803636517547.html

Yes.

@Andykong Is there any plan to introduce RU7 like 1-Bit Ladder DACs in future iteration of N3 series.

Hopefully someone will post a 3-way comparison of Cosmo with SJY Horizon and Arya Stealth as they are in similar price brackets.

OTL tube amps are generally not good pairing with low impedence h/p like Focal and Audeze, better try hybrid tube amps or OTC (more expensive)

Surprisingly HE1000 / Arya headband is not in the store, you can try sending an email to customerservice@hifiman.com, I will be surprised if they don't sell a replacement headband for such a highend headphone.