Topping Mini300 Class D Power Amplifier, Fully Balanced Desktop Stereo Amp, 140W Hi-Fi Ampli for Desktop/Outdoor/Bookshelf Speakers, White

TOPPING Mini300 Amplifier spec Input: THD+N @1kHz (A-wt) SE: <0.0006% @4Ω 5W <0.0005% @8Ω 5W BAL: <0.0005% @4Ω 5W <0.0004% @8Ω 5W THD+N @No-wt 20kBW SE: <0.0010% @4Ω 5W <0.0005% @8Ω 5W BAL: <0.0010% @4Ω 5W <0.0004% @8Ω 5W SNR @MAX OUT 1kHz (A-wt) SE: 121dB BAL: 124dB Dynamic Range @1kHz (A-wt) SE: 121dB BAL: 124dB Frequency Response SE: 20Hz-40kHz(±0.3dB) BAL: 20Hz-40kHz(±0.3dB) Output Level SE: 65Vpp @4Ω 68Vpp @8Ω BAL: 65Vpp @4Ω 68Vpp @8Ω Noise (A-wt) SE: <15urms BAL: <15urms Channel Crosstalk @1kHz SE: 90.0dB BAL: 106.0dB Input sensitivity SE: 1.3Vrms BAL: 2.6Vrms Gain SE: 25.0dB BAL: 19.2dB Channel Balance SE: 0.1dB BAL: 0.1dB Output Power 140W x 2 @4ΩTHD+N<10% 125W x 2 @4Ω THD+N<1% 85W x 2 @8Ω THD+N<10% 65W x 2 @8Ω THD+N<1% Load Impedance: 4-8Ω *Note: The above data is the result of the test in TOPPING laboratory under AC220V 50Hz condition.

• Compact and Powerful Full-Balanced Class D Amplifier: The TOPPING Mini300 is a compact full-balanced Class D power amplifier, delivering 140W per channel at 4Ω load and maintaining extremely low distortion (THD+N < 0.0005% at 8Ω load and 5W output). Its full-balanced architecture ensures a clean signal path, and the 124dB signal-to-noise ratio provides a clear and stable audio experience, making it ideal for bookshelf speakers in offices or desktop monitoring speakers.
• High-Power Output for Various Scenarios: The Mini300 delivers 2×140 watts at 4Ω load, perfect for driving high-power passive speakers in desktop audio systems or near-field setups. Its all-aluminum body ensures efficient heat dissipation, with bottom and side vents for stable long-term operation, meeting the demands of Hi-Fi music listening and professional monitoring.
• Full-Balanced Architecture: The Mini300 amplifier uses a full-balanced D-class circuit with independent amplification paths for each channel. This design eliminates crosstalk and external noise, achieving a 124 dB signal-to-noise ratio and <15μVrms noise. It provides pure music playback with strong noise resistance and no power hum. The class D circuit offers high power with low distortion and low output impedance for consistently clear and transparent sound.
• Dual-Line Inputs and 12V Trigger Function: The Mini300 supports balanced (TRS) and unbalanced (RCA) inputs, eliminating the need for extra converters. It also features a 12V trigger input, allowing it to turn on and off in sync with your DAC or preamplifier.