TOPPING Mini 300 — Fully-Balanced Class-D Compact Desktop Power Amplifier, TRS & RCA Inputs, 12V Trigger, Ultra-Low Distortion

A fully balanced Class-D design built for quiet, detailed playback. The Mini 300 uses independent amplification paths for each channel, removing crosstalk and rejecting external interference before it reaches the speakers. That architecture yields an exceptionally low noise floor (124dB SNR and <15μVrms noise), so playback is clean and transparent. Exceptional distortion performance. With THD+N <0.0004% @8Ω 5W, the Mini 300 preserves fine musical detail—from delicate vocal textures to subtle instrument timbres—delivering a lifelike sense of depth and clarity. Robust, high-output operation. The amplifier can produce up to 140W×2 into 4Ω at 10% THD+N, and still deliver 125W×2 into 4Ω at 1% THD+N, making it capable of driving demanding speakers for both serious HiFi listening and monitoring. Flexible connection options. The rear panel accepts balanced TRS and unbalanced RCA inputs without adapters; a front-panel switch lets you select BAL or SE to match your source. Convenient system integration. A 12V trigger input enables the Mini 300 to power on and off in step with a connected DAC or preamp for hands-free operation. Built for silence and safety. The unit features noiseless power on/off behavior plus built-in overheat and overcurrent protection to help prevent damage from excessive levels or faults.