Hello there,
We are sorry that our product did not satisfy you.
D-Fi adopts the exclusive custom dual-magnet & dual-cavity dynamic driver. Dual magnetic what it means dual magnetic circuit, whose magnetic field is enhanced by superimposing the magnetic force of 2 magnets, which to acieve energy efficiency and stronger transient performance.
Could you please tell us what problems you encountered while using the product?
If you encounter any problems in the future, we sincerely suggest that you contact us via email (support@Linsoul.com)at the first time,because we can solve your problems in a more comprehensive way.
Thank you for your support and understanding.