TWISTURA / SIGMA 1DD+1BA hybrid earphones

SIGMA uses a dual hybrid configuration, combining one dynamic driver and one BA driver. The precise crossover design utilises the strengths of each driver while complementing each other's weaknesses. The result is a well-balanced acoustic performance that combines rich low frequencies with delicate mid and high frequencies.

■Compact, high-performance dynamic driver
The dynamic driver with 6 mm LCP (liquid crystal polymer) dome composite diaphragm, which is responsible for low frequencies, provides natural and responsive sound with low distortion due to its excellent acoustic transmission properties and suppression of split vibrations.

■Mid- and high-frequency expression with custom BA drivers
The mid-high frequency range is equipped with a customised ‘60040’ BA driver exclusively for SIGMA. The high response and resolution deliver a faithful and mellow sound, reproducing even the smallest of sound details.

Professional acoustic tuning
The delicate tuning by skilled engineers ensures that low frequencies are tight and high frequencies are natural, for an immersive music experience regardless of genre.

Co-axial integrated chamber for a unified sound
The coaxial integrated chamber design with drivers positioned on the same axis reduces noise and distortion and delivers natural sound with a smooth bandwidth connection.

■Fusion of design and wearing comfort
Hybrid shell combining aluminium alloy and transparent resin for a compact, easy-to-wear shape with a refined appearance.

■Accessories supporting high-quality transmission
The OFC silver-plated cable has high conductivity and durability and maintains sound purity; a Type-C DAC adaptor (32bit/384kHz compatible) and a 30Ω impedance adaptor are also included to support a variety of usage environments.

Unit construction: 6 mm LCP dynamic driver (low frequencies), custom ‘60040’ BA driver (mid-high frequencies).
Diaphragm: LCP (liquid crystal polymer) dome composite diaphragm
Impedance: 30Ω±3 (@1kHz)
Sensitivity: 107dB/Vrms (@1kHz)
Frequency response: 15Hz - 37000Hz
Re-cable connector: 0.78mm 2pin
Plug: 3.5mm single-ended / Type-C.