As a worthy successor to the Moondrop Spaceship model, the new Chu has adopted a completely different design concept, a more traditional Chinese styling, and significantly upgraded acoustic architecture.
Adopting the Aria’s decentralized dynamic structure, the high-performance 10mm composite cavity with high-frequency phased waveguide leverages an N52 Nd magnet internal magnetic circuit and 0.035m ultra-thin imported CCAW sound coil to obtain high energy conversion efficiency, and deliver outstanding performance with full dynamic range and rich details.
In order to match the frequency response as closely as possible to the VDSF Target Response, the acoustic coupling cavity needs to be carefully controlled. Through volume and dimension calculation, FEA finite element simulation and 3D printing experiment verification, an acoustic coupling cavity has been created which can accurately reproduce the ideal frequency response.
The MOONROP VDSF Target Response is a parametric target and sound quality is controlled by composite elements, thus restoring the sound quality to mastering levels, and creating an open soundstage with the characteristics of a diffusion-tuned space.  MOONDROP VDSF Target Response is a target frequency response curve based on the HRTF (head-related transfer function) of B&K HATS under diffusion and the ideal room preference curve. The closer the frequency response curve measured under B&K HATS is to the target frequency response curve, the more the earphones can reproduce soundstage imaging in terms of frequency response.
The Chu comes standard with the popular Spring Tips ear tips. Spring Tips suppress undesirable resonance through a special diffusion structure, significantly reducing high-frequency linear distortion caused by nozzle resonance, and optimizing natural high-frequency timbre. At the same time, the carefully selected material of the Spring Tips cap can better fit the ear canal without stickiness, and the special radial double support structure can prevent bass loss.
- Material: Zinc alloy
- Driver: 10mm high-performance dynamic driver
- Diaphragm material: Titanium-coated
- Sound coil: 0.035mm ultra-fine black CCAW
- Magnetic circuit: N52 neodymium magnetic high-performance internal magnetic circuit
- Acoustic filter: Patented anti-blocking (anti-imbalanced) acoustic filter
- Sensitivity: 120dB/Vrms @1KHz)
- Impedance: 28 0hm
- THD: THD@1KHz51%
- Frequency range: 10Hz-35kHz (IEC61094, Free Field)
- Effective frequency response: 20Hz-20kHz (IEC60318-4, -3dB)
Price: 20$ (22$ with Mic)