Thieaudio

Valhalla

THIEAUDIO Valhalla is a high-end multi-driver in-ear monitor with 19 drivers per side: four Sonion 38D1XJ007 subwoofers, ten Sonion E50DT0005 low-midrange drivers, four Knowles RDE 33729 mid-treble drivers, and one Knowles WBFK 30095 ultra-treble tweeter. Its architecture uses a 4-way passive crossover with multiple 2nd-order networks, four-bore acoustic tubing, impedance neutralization, and the PBS Precision Bass System with a resonance chamber, diversion tube, and pressure-relief vent. The stated tuning includes a 10 dB bass shelf terminating at 200 Hz, a gentle 1 dB slope from 200–800 Hz, an 8 dB pinna gain at 2.8 kHz, and ultra-treble extension to 40 kHz.