iBasso CA04 2.5mm - 4.4mm adapter High-quality adapter to convert your 2.5mm (Female) Balanced headphones into 4.4mm (Male) Balanced Features Socket: 2.5mm TRRS Plug: 4.4mm TRRRS balanced plug 5N Mono Crystal Copper Cable with a Silver Plated Sheild ending in a right angle low profile plug
