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The result of a collaboration between ddHiFi and Moondrop, Surface in-ear monitors feature a sophisticated five-driver hybrid system for extended, balanced frequency-band coverage. This configuration combines four Balanced Armature (BA) drivers and one Dynamic Driver (DD), orchestrated by Moondrop's expertise in crossover design, to deliver a natural soundstage with powerful, present low-mids.
The Surface exploits the synergy of five drivers: a dynamic driver dedicated to deep, punchy bass, and four Balanced Armature drivers distributed for precise, detailed midrange and treble reproduction. By assigning complementary frequency bands to each type of driver, thanks to Moondrop optimization, these headphones deliver a natural sound, rich in detail and particularly expressive in the lower midrange.
ddHiFi, in partnership with Moondrop, has designed an innovative double crossover system for Surface, exploiting both the earphones' printed circuit board and the design of their acoustic chambers. The printed circuit ensures precise filtering, guaranteeing that each driver operates in its optimum frequency range. At the same time, the acoustic chamber, meticulously developed and 3D-printed, acts as a physical filter, enabling harmonious fusion of the different drivers for a coherent, immersive final sound result.
Surface in-ear monitors come with ddHiFi's BC120S cable, a high-quality, silver-plated OFC copper cable. Its core uses a Litz wire structure consisting of 30 strands of 0.10mm diameter, combined with a Litz wire shield of 116 strands of 0.05mm. Equipped with a 4.4mm jack termination, this cable ensures unaltered audio signal transmission, fully enhancing the exceptional performance of Surface headphones.
Technical characteristics
Specifications | |
---|---|
Product type | In-ear monitors |
Drivers | 1x Dynamic driver 4x Balanced armature driver |
Frequency response | 10Hz - 30kHz |
Impedance | 15Ω |
Sensitivity | 118dB/Vrms @ 1kHz |
Total harmonic distortion (THD) | ≤ 1% @ 1kHz |
In-ear monitors connectors | CIEM 0.78mm 2 pins |
Cable conductor material | Silver-plated copper |
Cable termination | Jack 4.4mm |
General | |
---|---|
Color | Silver |
Package | 1x ddHiFi Surface 1x ddHiFi BC120S cable 1x Carrying case 3x Pairs of ear tips |
Color | Silver |
Impedance (Ω) | 15 |
Efficiency / Sensitivity (dB) | 118.0 |
Wireless | No |
Cable termination | Jack 4.4mm |
Headphone / Earphone connector | CIEM |
Phone call feature | No |
Noise reduction | No |