FiiO FT7 Open-Back Planar Headphones overnight The BT Sink function allows

The BT Sink function allows you to connect the SP4000 to an external device via Bluetooth

Custom Dual Balanced Armature Drivers + T

The Bluetooth version of the K7 uses a QCC5124 Bluetooth chip

5 mV output

Introducing the Vienna Audiophile Upgrade Cable for Sennheiser IE Series IEMs

FiiO FT7 Open-Back Planar Headphones overnight The BT Sink function allowsFT7 Gold Diaphragm Open Back Planar Headphones 106mm large planar driver Patented gold + silver multi layer coating 1m thin special diaphragm Zebrawood grille Uniform magnetic field Dual sided neodymium magnet push pull magnetic circuit system 427g light weight Carbon fiber construction Lambskin Breathable fabric ear pads included Liquid nitrogen frozen monocrystalline copper cable Custom Yaoli linen storage bag 106mm large planar driver Maximized