How would you compare the pioneer to the HD 650 and maybe the HD 800? Even though they are like 400-$1000 Apart I am just curious
HD650 is much more precise, clean and resolving.
SE-A1000 is a little bit more airy.
HD800 is brighter and much more clinical than both SE-A1000 and HD650.
HD800 is a monster headphone, it blast everything around with quite a margin.
It's too neutral and often bright for certain recordings/listeners, but technically speaking, it's impressive.
Untrainned listeners might claim that SE-A1000 is on pair with HD650/K702 or any other headphone, but it's not.
That said, SE-A1000 is definitely a top performer under 100 dollars.
(Something similar happens with the Fidelio X1, very little trained listeners will put them in the same league as HD600/HD650, but there's plenty of
newcomers that find them more fun and prefer them over technically superior headphones)
SE-A1000 is probably on the same playground as the Fidelio X1.
SE-A1000 is a tad more neutral and airy.
The Fidelio is thicker with more focused imaging.
Both are well built but the Fidelio is definitely luxurious by comparison.