Questyle M15i Portable DAC/Amp folding-collapsible There is a small driver

There is a small driver unit – what could be called a speaker – inside the earphones

The ATH-AP2000Ti over-ear headphones feature proprietary large-aperture 53 mm drivers

The amplifier in the CMA18 Portable delivers a maximum headphone output power of 1000mW at 32Ω

a popup stylus target light

the headphones feature a lightweight and ergonomic design

Questyle M15i Portable DAC/Amp folding-collapsible There is a small driverApple MFI Certification Ensures High Performance and Compatibility "i" in M15i indicates that it has been certified by Apple's MFi program. MFi certification ensures perfect compatibility with the iPhone iPad and the Apple ecosystem. It meets Apple's strict requirements for external devices in terms of power consumption and compatibility, avoiding the risk of damage to phones and systems caused by arbitrary connections of USB devices. Equipped with