If you are unsure whether this will work with your headphones, please do not purchase. Shipping will be via Click Post. I have confirmed the sound output before listing. The headphone side connector is 3.5mm x2. The amplifier side connector is 4.4mm. There are no noticeable scratches, but this is a used item inspected by an amateur, so please refrain from purchasing if you are not tolerant of minor imperfections. No price reductions are possible.