[Headphones and Coffee]

What are your thoughts on BT amplifiers like the Xduoo XP-pro and other offerings from Fiio, arus, etc ?

 

[Peddler]

I have the Nexium Aqua and rate it very highly. It can drive my Sennheiser's to very high levels, offers APtX resolution, and I features wireless charging and is not much larger than a smartwatch.