The FiiO K15 isn't just a DAC and headphone amplifier. The new unit also acts as a preamplifier and a streamer, with a host ...

It goes further. The on/off toggles that accompany each setting recast the WiiM Home app as a teacher. This amplifier is where newcomers and/or old timers stuck in their ways come to learn first-hand ...

Discusses the technology of a transimpedance amplifier (TIA). A TIA is a two-port device that converts an input current in one port to an output voltage in another port. A TIA is expected to have a ...

This paper presents a high-voltage power amplifier for driving flexible paper speaker. Simple circuit complexity and high signal quality can be achieved. The operating principles and design ...