I am certain that SeeAudio uses medical-grade resin to create the Yume IEM shells although it is not specified. SeeAudio provides a graph of the Harman curve compared to theirs and it seems a smoothing of frequencies occurred with LFC implemented especially in the midrange area all the way to the highs and up to around 10kHz. This, according to SeeAudio, gave the dynamic driver a more correct phase response in its dominant frequency band. The LFC tech allowed them to calculate an optimal cavity size between the dynamic driver and the sound guide capillary which came out to 33.91 cubic millimeters. SeeAudio followed the latest 2020 Harman target frequency response curve to tune the Yume but optimized them for a DD vibration ultra low-frequency sound domain response according to their literature on the website. One of the methods SeeAudio used to tune the Yume is called Low-Frequency Filter Conversion or LFC which according to them removes crossover distortion and eliminates internal refractions.

The rest of the driver array inside the IEM shells includes a pair of custom Balanced Armature drivers tuned for smoothness and a non-fatiguing sound signature.Įach driver handles a portion of the frequency spectrum as in a three-way speaker system, the dynamic driver handles the bass while the two balanced armatures handle the midrange and the treble respectively completing the spectrum.

SeeAudio broke the norm here because all their other readily available IEMs use BA drivers to produce bass and the Yume uses a dynamic driver for the bass region.Īlso breaking the mold far as the traditional dynamic driver materials the SeeAudio Yume uses a 9.2mm premium liquid silicone diaphragm dynamic driver which is made with liquid silica that is impervious to temperature fluctuations therefore always maintaining its shape regardless of ambient temperature. Let us see if these can sing! Tech Highlights Hybrid Driver Design Yume is the Japanese word that means dream and there is also a song called Yume. Well, they recently sent us what seems to be their entry-level model IEM called the Yume. This is a small IEM manufacturer that sells their IEMs mostly through dealers such as Linsoul and at present offer 3 models that are all multiple driver designs so it seems like they are branching out into the global market fairly quickly. It is composed of several people with a high skill set and many years of experience making IEMs. SeeAudio started back in 2018, branching out of Hangzhou Xinyi Technologies.

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