FiiO X7 – no AMP module
Patent-pending dedicated source module + independent headphone amp module design keeps the compact integrated profile of a single portable music player while providing the sonic advantages of utilizing a separate headphone amplifier. The resulting customizability allows you to customize the resulting sound (warm, neutral, etc.), output power (for driving IEMs or full-size headphones) or output port (single-ended or balanced, etc.) by choosing among different modules.