Topping B200 Monoblock Amplifier Review

[Old_School_Brad]

What exactly is the relevance of this in practice?
The efficiency of the connected speakers is much more important for the overall system.

The volume (sound pressure level, SPL) of a loudspeaker increases logarithmically with the power supplied. Doubling the power leads to a level increase of 3 dB. At loudspeakers with an efficiency of 88db, the difference is therefore only 0.2 dB - this is practically imperceptible.

10 watts more power is negligible for the volume. Doubling the power to 380 watts, on the other hand, would only result in an increase of 3 dB, which is barely audible.

These 10 watts are not a fraud, especially if you compare it with power specifications of 1000 watts pmpo on department store hi-fi.

Most people have completely unrealistic ideas about what amplifier power ratings mean in practice.

One argument is that it's illegal, while another is that it's misleading. As you pointed out, it's not the only manufacturer guilty of inflating ratings for marketing purposes.

And is it only 10 W difference?

 

[wwenze]

Actually what does slight reduction in power mean

We only know the max power is reduced because the AP is testing it and sweeping the voltages.

If we didn't know the max power is reduced, and it's not like the gain of the amp would change automatically, this decrease in max power means the output goes into clipping if you run it at max for too long. Or at the very least the distortion value increases.

 

[Burns]

Has anyone here disassembled the feedback implementation in the B200 yet?

 

[Audionaut]

illegal

Scam, illegal, harsh terms are used here for interpretations in the hi-fi sector.
There are bigger things going on around the World at the moment, where I think the term illegal is more appropriate.

And is it only 10 W difference?

I was only referring to the 10 watt difference cited by a User here and did not check all the measurements of this amplifier because I assume that Amir knows his trade and how to interpret it.

If he lets Paul play golf and only comments positively on his measurements in the video, I usually see no reason to check this.

 

[Lambda]

Scam, illegal, harsh terms are used here for interpretations in the hi-fi sector.

If I buy a 200W amp that only outputs ~150W, well… you can call it whatever you like.
But since the manufacturer is clearly aware of this and chooses not to disclose the truth, I would call it a scam.

200W in a 4 and 8ohm load with a class AB amp and a 60V 4A PSU is just impossible

If you buy a burger labeled as 100% beef and later find out it’s actually 25% roadkill, would you not care just because you can’t taste the difference?
Be aware that quantified measurements are only a proxy for engineering excellence.
A SINAD of 120 vs. 110 makes practically no audible difference.

But we tend to trust that a manufacturer capable of building a device with a SINAD of 120 must also be excellent in other ways.

However, if someone has malicious intent, it is absolutely possible to build a device with a great SINAD that still performs poorly in other aspects.

So if a company systematically puts only 175g of meat in my 250g burger, I would no longer consider them excellent.

 

[BeeKay]

Maybe Topping should handle this with a bit of understatement just like Rolls Royce:

Output Power

Adequate

 

[Ismapics]

It seems B200 does not have rca. I wouldn't complicate my life and go for an hypex or purifi implementation with rca such as the Audiophonics ones. No human being will hear differences and they have rock-solid reliability. Wiim ultra is too good to be true, it's right to build the system around it

You are correct. I thought it had the same connections as the B100.

 

[Yevhen]

At 30V, 50°c ambient those caps (35V, 85°) should last around 13,000 hrs. (4hrs a day for 10years). Changing to 50V 85° caps increases that to 19,000 hrs. Changing to 35V 105°c caps increases that to 52,000 hrs! So the big killer is temperature, anyone know how hot these boxes get?

Electrolytic Capacitor Life Calculator - Power Electronics Calculators and Tools

This calculator will compute W, dBW, and dBm Conversion.

eepower.com

The amp has no AC switch, I assume it will be ON for 24/7, if the average user is as lazy as I am to unplug the AC manually every time

 

[BeeKay]

The amp has no AC switch

Wrong

 

[Burns]

You are correct. I thought it had the same connections as the B100.

it beats egg whites three times faster

 

[Deleted member 72219]

it beats egg whites three times faster

More like 50% faster.

 

[Burns]

More like 50% faster.

I measured in dB

 

[Sokel]

Wrong

Wrong AND right at the same time I guess.
Switch may kill the amp but not the PSU. There's a special function in pro stuff like this which is call "AmpDisable"

And if this Topping's function is considered "stand by" it has to consume less than 0.5W by law in Europe.

 

[Burns]

how much does it consume in standby mode?

 

[BeeKay]

how much does it consume in standby mode?

almost nothing. hardly measurable

This is what the smart socket reads. 9 out 10 refreshed measurements 0w and one time 1w

 

[Old_School_Brad]

Wrong AND right at the same time I guess.
Switch may kill the amp but not the PSU. There's a special function in pro stuff like this which is call "AmpDisable"

And if this Topping's function is considered "stand by" it has to consume less than 0.5W by law in Europe.

Yes, something needs to keep the power running for the micro switch.

how much does it consume in standby mode?

I'm not fluent in Chinese, but this seems like it might be its standby power, which wouldn't comply with EU regulations.

 

[Thomas Savage]

There are bigger things going on around the World at the moment, where I think the term illegal is more appropriate.

Tell me about it , They keep reducing the alcohol content of Stella and other beers . Criminal!

 

[Old_School_Brad]

Tell me about it , They keep reducing the alcohol content of Stella and other beers . Criminal!

Think of it like a slow, gentle easing out of your bad habits. In ten years, you'll be sipping alcohol-free beer, nodding thoughtfully, and convincing yourself it tastes just as good. (it doesn't.)

 

[Sokel]

Yes, something needs to keep the power running for the micro switch.



I'm not fluent in Chinese, but this seems like it might be its standby power, which wouldn't comply with EU regulations.

View attachment 434088

The above does not look right to me, it states 64V/3.75A power supply, not the one provided here which is (at least labeled) 60V/4A.
Maybe the previous one or different one for the internal market?

 

[Lambda]

Wrong

Well maybe on the speaker output.... and its a Switch mode power supply.
So there are Switches but i don't think this is what is meant.