The Topping A30 Pro Desktop Headphone Amplifier is optimised to drive most headphone types with uncompromising precision & accuracy. No matter how power-hungry your cans are the A30 Pro is suited to accommodate thanks to 3 separate gain settings & an ultra-low noise profile. Its perfect for sensitive IEMs & demanding over-ears alike. Single-ended & balanced inputs allow you to have versatile source options whilst 4-pin-XLR 4.4mm & 6.35mm outputs offer complete amplification for all major headphone types. An input pass-through function means that you can keep your A30 Pro in your signal chain for use with active speakers or DACs with a preamp functionality. With impedance as low as 20 ohms it is suitable for an extensive selection of devices. Audio will become clear & detailed no matter your headphone or component selection.