Topping Mini 300 Amplifier Review

[Roland68]

Hi, I already bought the E50 II and the PA5 II with balanced cables. Am I missing out on much with this new Mini 300?

You're not missing anything, except that Topping has managed to offer comparable performance and measurements in a less expensive device.
The Topping PA 5 II uses a few higher-quality and more expensive components, but these don't result in a longer lifespan or audibly better measurements.

 

[devilnevacry]

You're not missing anything, except that Topping has managed to offer comparable performance and measurements in a less expensive device.
The Topping PA 5 II uses a few higher-quality and more expensive components, but these don't result in a longer lifespan or audibly better measurements.

thanks for the reply!

 

[ziggurcat]

Hi, I already bought the E50 II and the PA5 II with balanced cables. Am I missing out on much with this new Mini 300?

I would argue that you're not missing out on anything audible.

 

[perceptionist]

Hi, I already bought the E50 II and the PA5 II with balanced cables. Am I missing out on much with this new Mini 300?

You paid $80 more for 1 dB less noise.

 

[Nickb155]

I think they mean a trigger from the E50 to turn on the mini-300. And I agree that it should have that feature.

That's correct

 

[fredreadrick]

Really happy with this mini combination View attachment 525820View attachment 525820

 

[pieterv1]

Really happy with this mini combination View attachment 525820View attachment 525820

Link's not really working, but glad you're happy

 

[fredreadrick]

 

[dpuopolo]

Specs:

• 【Professional Balanced Class-D Design】Featuring a fully balanced amplification architecture, the TOPPING Mini300 minimizes noise and interference for a pure, distortion-free signal path—achieving professional-grade transparency and depth in a compact form.
• 【High Power Output with Ultra-Low Distortion】Delivering up to 140W×2 @4Ω (THD+N <10%) and maintaining <0.0004% THD+N @8Ω 5W, Mini300 combines high fidelity and high power, ideal for both HiFi listening and studio monitoring applications.
• 【Exceptional Dynamic Range and Clarity】With 124dB DNR and 124dB SNR, Mini300 preserves every subtle musical detail—allowing instruments and vocals to sound natural, lifelike, and richly layered.
• 【Auto Power Sync with TRIG Control】The TRIG-linked power function automatically powers the amplifier on/off in sync with connected devices—making system control effortless and eliminating the need to operate multiple units individually.
• 【Dual Input Compatibility】Supports both balanced TRS and unbalanced RCA inputs—no adapter required. Easily integrates with DACs, preamps, or audio interfaces for flexible system setups.
• 【Quiet, Safe, and Reliable Operation】Engineered for silent startup/shutdown, and equipped with overheat and overcurrent protection, ensuring long-term reliability and zero noise during playback.
• 【Compact and Durable Aluminum Design】Built with a CNC-machined all-aluminum chassis available in multiple finishes. Bottom and side cooling vents improve thermal efficiency while maintaining a clean, modern appearance for any desktop setup.

Things to try with this:
1. Run balanced, but use - for hot and reverse the speaker cables. The reason is that many cheap opamps have poorer PNP transistors than NPN. Going in backwards (And fixing it on the outputs) uses the NPN transistors. Made a HUGE difference with my Hypex 122 amp because it's input chip is a 5532.
Next, try running two of these in dual mono with shorting TRS plugs on the two unused inputs. I plan to try this as soon as my second amp arrives.

 

[Roland68]

Next, try running two of these in dual mono with shorting TRS plugs on the two unused inputs. I plan to try this as soon as my second amp arrives.

That won't work with the Mini 300; you'd have to modify the inputs and outputs.
The TPA3251 in the Mini 300 is already configured for BTL; for mono, you'd have to change the circuit to PBTL. It's best to take a look at the datasheet.

 

[Roland68]

Next, try running two of these in dual mono with shorting TRS plugs on the two unused inputs. I plan to try this as soon as my second amp arrives.

Even if they painstakingly convert the Mini 300 to mono operation, they won't increase the output power (it's already configured for BTL), but will only make it 2-ohm capable, even though it's not very sensitive to that anyway.

However, a 3E Audio A5 with 2 x TPA3251 in dual mono PBTL operation would be the better choice and roughly the same price.