Indeed, its flat mid-range to treble transition comes courtesy of greater pinna gain, exhibiting a frequency response you can trust, incredible detail, and hyper-realistic live dynamics. Best of all, Crimson's fit is a dream come true.
As a successor, and immediate upgrade, to Helios, Crimson answers all of its predecessor's critics. A flat frequency response transition from 1Khz up to 4Khz enhances the perception of more accurate, present mids.
Despite Symphonium's increased pinna compensation and the eschewing of a more diffuse, distant soundstage, Crimson suffers no shortage of spatial technicalities. It renders images with solid, tangible outlines on a vast and black background.
It's amazing how so much soundstage was crammed into such a small shell – the other improvement Symphonium are likely to be greeted with much cheer for.
With a critical re-arrangement of components within Crimson's cavity not only for sonic gains through Phase Harmony Attenuation Technology (PHAT), but also wearability, the best-fitting Symphonium yet can be worn by virtually all ears.
What's left is pure performance distilled from miniature high-grade T6 heat-treated AL6061 aluminium alloy shells, housing Symphonium's trademark flat impedance technology that ensures Crimson's performance remains consistent with inconsistent voltage sources.
Still, it bears to juice the low impedances of Crimson well for best performance. To that end, Questyle Audio's CMA18P DAC/amp is a mainstay, while HiBy Music's partnership with Symphonium has been explored at length with any of the latter's discrete output stage music players.
Check out the path that led to Crimson with Symphonium's first releases here, or view our other IEMs here.
Driver configuration 4x Balanced Armature
Impedance 6.05ohms @ 1kHz
Frequency response 10Hz-24kHz (± 2 dB)
Sensitivity 106dB SPL/vRMS @ 1KhZ
Cables 1 x 4-core Altalune Audio Novaron