BGVP / DMA

The BGVP "DMA" is an earphone that combines a Sonion dual-BA bone-conduction driver with a dynamic driver featuring a nickel-coated diaphragm.

■ Equipped with Sonion BA-type bone conduction drivers
・ Features dual bone conduction drivers from Sonion, capable of delivering highly nuanced sound. They capture not just the audio itself, but also the sense of air and atmosphere within a recording.
■ High-performance dynamic driver
・ The dynamic driver utilizes a nickel-coated diaphragm, with a nano-scale layer of nickel applied—a process requiring high-temperature treatment. Its exceptional rigidity ensures rapid transient response and low distortion.
■ High-precision shell
・ Developed in collaboration with HEYGEARS—a company renowned for superior build quality—the shell is crafted using high-precision 3D printing technology. This ensures not only excellent durability but also precise control over internal acoustic reflections and overall sonic accuracy.
■ High-grade cable
・ Features an MMCX interface. The cable is made of 6N OCC (Ohno Continuous Cast) copper and includes a swappable plug system (supporting both 3.5mm and 4.4mm), making it versatile for various listening scenarios.
■ The essence of bone conduction technology
・ Traditional air-conduction methods can lead to the loss of certain frequency bands due to phase cancellation within the ear canal. In contrast, bone conduction transmits sound via vibrations through the skull; this approach preserves a wider frequency range and conveys a more immersive, atmospheric soundstage by minimizing acoustic loss.
・ Drivers: 2 BA + 1 DD + 2 BC (Dual bone-conduction drivers by Sonion; dynamic driver with a nickel-coated diaphragm)
・ Frequency Response: 10Hz – 40kHz
・ Impedance / Sensitivity: 17Ω / 106dB
・ Connector / Plug: MMCX (interchangeable plug system: 3.5mm / 4.4mm)
・ Cable: 6N OCC copper cable, 1.2m in length
・ Included Accessories: 2 types of ear tips (S/M/L, 1 set each), foam ear tips (1 pair), and an earphone case