ES Lab ES-1a FilterSet

US $ 200.00

The ES Lab ES-1a FilterSet contains filters with sample rates from 44.1 kHz to 352.8 kHz and packaged as a .zip file that can be used in most convolvers, like Hang Loose Convolver and Roon for example. Mono 352.8 kHz mono filters are also included for HQPlayer.

FilterSet Free Trial Offer: Download the Hang Loose Convolver 14-Day Free Trial software. Specify the Focal Clear Neutral FilterSet in the Order Notes at checkout.

Full Product Description

Frequency Response Measurement & Correction

ES Lab ES-1a frequency response Red measured Green corrected

Th ES Lab ES-1a is bright sounding headphone. Looking at the measured frequency response, the bass starts rolling off with a bump at 60 Hz and is -3 dB down at 30 Hz. The broadband +4dB peak at 1.3 kHz pushes the lead vocals/instruments far forward in the mix with a distinct coloration of sound. Exacerbated by the narrowband +6dB peak at 4.2 kHz in the upper midrange make these headphones thin sounding.

Engaging the high-resolution convolution filter reveals a gem of a headphone with outstanding resolution. With +-0.5 dB frequency tolerance throughout the convolution filters active range, the sound quality ranks amongst the best in this catalogue of headphones for transparency.


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