crinacle's

Graph Database

Frequency response measurements for headphones
GRAPH COMPARISON TOOL

The setup

Setup: Laptop PC > Room EQ Wizard > Motu M2 audio interface > B&K 1704-C-102 CCP signal conditioner (USB bus power) > GRAS RA0402 pre-polarised “high resolution” IEC603318-4 coupler > GRAS KB5000/KB5001 artificial pinna (right and left respectively)

For further details, click here

*Note: All headphones are measured with stock pads unless otherwise stated.

DISCLAIMERS

 

1. A Frequency Response graph is not in any way an indication of good sound quality. Think of it as flavours, like in ice-cream. The FR is like the branding at the side of the tub telling you the flavour of the ice cream. It’s not going to tell you if it’s good ice cream, but at least you have a way of finding out if it’s the flavour you want.

2. Measurements in this database are raw and do not conform to any rigid industry standard. The measurements in this database are best used as internal comparisons rather than cross-referencing to other databases.

3. Flat on the graph DOES NOT MEAN flat in real life. The fact that headphones bypass the head necessitates higher SPL in the 2-5k regions as compensation (see: Diffuse Field, Head Related Transfer Function, Harman Target).

4. Measurements are meant to complement subjective impressions, not form the basis for them. I get that certain people like to paint me as some sort of objectivehead figure where all I do is look at graphs and determine quality sorely off of said metrics. 99% of the headphoness I’ve measured, I have listened to as well. If not for the graphs, one can also take this database as a list of headphones I’ve tried and auditioned, and the graphs simply being proof of it.

5. Unit variation is a thing. I do not control what demo units the companies provide to me or to their distributors (where I usually do measurements). If you find issues with my measurements, it can be any of the following:

a) Inconsistent manufacturing
b) Broken/malfunctioning units (in a way that is not immediately obvious)
c) Horrible channel matching
d) Measurement error (yes, I am human, I make mistakes sometimes)

6. The measurements are performed with the assumption of a “perfect seal”. Placements that results in abnormal rolloff are scrapped and re-done until a proper seal is achieved.

GRAS 43AG-7 partly funded by:

Headphones.com
Soranik
Riveton Headphones & Goldvein Cables
Super* Review
Prisma Audio

Special thanks to >$50 contributors:

Hawaiibadboy
Jon Bokic
Alan Lin
Robert Taylor
Tareq Abou Samra
Denis Dmitriev
Jonathan Pelchat
Random Bot
Desert Scrub
rofflemywaffle
oSeven brother
Joe Curcio
Daniel Thomas
Wasley
Jakob Tsang
Jay Yang
Teddy Ong
Ian Maddela
Michael Giardina
Hardeep Singh
Michael George
Leneo
Edward Yap
James Nguyen

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Measurements list