wanted to know the headphone output impedance of my Fostex hp_p1(that I own) so I could match headphones with it correctly.
I made a thread and also posted about four times in other threads requesting the information , and emailed Fostex. All to no avail. I did not want to over post or over ask in fear of being a pest. I searched the internet many times for months until I came upon a page listing tue output measurements of many devices. Lo and behold the Fostex was listed there.
I think its a fair question to ask, for specs, graphs, mesurements and the like as many companies share them selectively based on their own preferences, what they want to share, hide and promote.
For me it was a fun and frustrating search. I did my requests in a civil and restrained manner realizing that my need to know was mainly mine alone although once the results were known others might also be interested.
It measured higher than i wished for but still sounds great, but no mind i have the hifi-m8 on preorder.
The AK100 was trashed on the forums for its impedance of around 20ohm but the go-dap wasnt for its 47ohms(which the company honestly emailed me about and they can change it to 10ohm), and the ever popular ALO -what are their output measurements?
Ask a few times, wait patiently, be civil, do multiple searches, inspire others to want to know the answer also through good example.