I spent a good 10 minutes and cannot find the cost.It says 1290euro in the first link. = $1500usd
I note it has configurable filter settings (4?)Yes and also I think you can make your own up as well using your computer? And it does native dsd if your into that.
The best part is it has it own volume control also remote’able if you have a $10 Apple remote.
As well as it’s 50ohm output impedance at 2.2v as good as any preamp can be. So direct to amp is the way to go.
Cheers George