This reminds me of Crinnacles In-Ear Fidelity graph database of IEMs. https://crinacle.com/graphs/iems/ iirc it is the largest database of IEMs in existence.
Also, wow I haven't seen this wordpress theme in 10 years, it used to be my favorite!
Since we're on this topic: a great thread on modding the Fostex T50RP. Some folks even turned this into a few small businesses. Some were selling modded versions and others selling mod-kits.
https://www.head-fi.org/threads/fostex-t50rp-incremental-mod...
Headwize used to be the place I'd hang out to discuss and enjoy DIY headphones and headphone amplifiers.
The site is now memorialized below but has a wealth of information.
Looks great, there goes my Sunday afternoon.
On the topic of trustworthy review sites, especially for headphones, I thought rtings.com is the standard. Detailed data-driven reviews and supposedly crowd-funded. What do people think about rtings?
What I'm after and can't seem to find are good quality¹ glasses frames that have (bone-conduction) headphones built in to the stems. I want to replace my existing prescription glasses with this.
¹ E.g. Spring hinges, nose pads.
it would be really great if someone did this level of objective measurement to settle the "HD555 is a crippled HD595" debate :-)
Given the recent discussions about hi-fi headphone misleading marketing https://news.ycombinator.com/item?id=36377875, and how hard it is to quantify quality, I found this resource a while ago and loved how they tear them apart and fixed the shortcomings of $40 headphones with simple hacks like adding a coffee filter on the cup to make them sound better than $500 models