Below are excerpts from the review:
“Even though Surface is not a single driver design, it often delivers the kind of coherence people chase in great single dynamic driver IEMs. Many hybrids sound segmented: bass feels like one device, mids another, treble another. Surface avoids that. Its hybrid structure is tuned to behave like one complete transducer, with a smooth transition from lows to mids to highs.
In that sense, it offers a best of both worlds experience: the physical foundation and punch of a dynamic driver, plus the speed and separation benefits that balanced armatures can bring, without the typical hybrid “stitching” sensation.”
From：Mobileaudiophile
