Topping Mini 300 Desktop amplifier in class D

DESCRIPTION

Balanced design of a HiFi Class D amplifier.

• -The TOPPING mini300 features a fully balanced Class D amplification architecture that minimizes noise
• and interference, delivering clean, transparent, and natural sound in a compact desktop amplifier format.

High-power desktop stereo amplifier

• Delivers up to 140 W × 2 at 4 Ω with THD+N <0.0004% at 8 Ω, ensuring high output power and crystal-clear fidelity for your home audio system, bookshelf speakers, or passive speakers.

124 dB dynamic range and HiFi audio resolution

• The exceptional signal-to-noise ratio (SNR) of 124 dB ensures accurate sound imaging, a wide soundstage, and realistic depth, ideal for both professional monitoring and audiophile Hi-Fi listening setups.

Automatic power synchronization and intelligent trigger control

• The TOPPING mini300 desktop amplifier automatically powers on and off with connected DACs or devices, eliminating the need for manual operation and creating a modern, intuitive desktop HiFi setup.

High-quality construction, dual inputs, and flexible connectivity

• Precision-machined aluminum chassis with efficient cooling vents. Supports balanced TRS and unbalanced RCA inputs, offering versatile connection options for your DACs.

TECHNICAL SPECIFICATIONS

TOPPING Mini300 Amplifier Specifications

Input: THD+N @1kHz (A-wt)
SE: <0.0006% @4Ω 5W, <0.0005% @8Ω 5W
BALANCED: <0.0005% @4Ω 5W, <0.0004% @8Ω 5W

THD+N @No-wt 20kBW
SE: <0.0010% @4Ω 5W, <0.0005% @8Ω 5W
BALANCED: <0.0010% @4Ω 5W, <0.0004% @8Ω 5W

SNR @MAX OUTPUT 1kHz (A-wt)
SE: 121 dB
BALANCED: 124 dB

Dynamic Range @1kHz (A-wt)
SE: 121 dB
BALANCED: 124 dB

Frequency Response
SE: 20Hz–40kHz (+0.3 dB)
BALANCED: 20Hz–40kHz (+0.3 dB)

Output Level
SE: 65Vpp @4Ω, 68Vpp @8Ω
BALANCED: 65Vpp @4Ω, 68Vpp @8Ω

Noise (A-wt)
SE: <15 µVrms
BALANCED: <15 µVrms

Channel Crosstalk @1kHz
SE: 90.0 dB
BALANCED: 106.0 dB

Input Sensitivity
SE: 1.3 Vrms
BALANCED: 2.6 Vrms

Gain
SE: 25.0 dB
BALANCED: 19.2 dB

Channel Balance
SE: 0.1 dB
BALANCED: 0.1 dB

Output Power
140W × 2 @4Ω THD+N <10%
125W × 2 @4Ω THD+N <1%
85W × 2 @8Ω THD+N <10%
65W × 2 @8Ω THD+N <1%

Load Impedance: 4–8Ω

Note: The above data were measured in TOPPING’s laboratory under AC 220V 50Hz conditions.