Topping B200 Monoblock Amplifier Review

[totti1965]

maybe you can answer my question that I asked here?

Making further progress, TOPPING’s new flagship amplifier will be launched in late May!

Maybe musicians record with extra low distortion, in the hope that most people will play using systems that add distortion, to ultimately sound as they had intended ? Haha. Yes. That was my thought when I read @Monk 's review. I suppose it's possible that some audio engineers abstain from...

www.audiosciencereview.com

Best setting

L70 (Preamp): Hi
B200: Lo

Every Power amp loves loud sources, so he has not soooooo much to do….

 

[renaudrenaud]

Best money I ever spent - right after the money I spent on the Zanden CD player, which is the best CD player ever made, according to Framer - it finally makes digital sound like analogue .

How to loose credibility?

 

[Acerun]

Oh wow, that's phenomenal performance, and it's class B (edit: this is misinformation; it is AB). I'd still take a Purifi amp over this simply because of efficiency

Purifi mono only $70 more

 

[dagfinn]

No argument at all.
The first part of what I said is important:

'Part of the thermal design' implies you have done the power/thermal calculations explicitly! The statement wasn't a generalization at all.

I was commenting on an earlier post that expressed surprise and doubt that heat sink orientation is important in general. In fact, the penalty is quite large as can be seen in the link I included above, and many heat sink manufacturers publish dramatic horizontal vs. vertical performance differences for passive applications in their data sheets. For the B200, I doubt the fins are even needed based on your and other comments, but I am not in any position to do that calc.

I measured the LA90D after an hour of my regular usage, (which admittedly is light, driving tweeters in a 4-way). The fin on the bottom rear 31,6C. Fin top rear 31,1C. On top cover right rear 29,8. Front plate above LEDs 30.4C. Ambient temperature is 24,5C. So fins are leading heat, being hottest external surface. Not much to transport here, though.

PA7+ driving 14" woofers were 37,8C on top, 2xPA5II+ driving 8" & 5" mids 32-33C after the same session. A Denon 715R was 38,6C when idle in the same room at the same time. Measured using a Microlife NC150 infrared thermometer.

 

[board]

Im dreaming now MF M6si 500.I find it 4000 eyro....but...30kilos!

It brings you to Audio Nirvana and saves you money on a gym membership at the same time. You'd be a fool not to buy it!

And remember:

 

[Bruce Morgen]

My knowledge of amplifiers architecture is far from great.

If this amplifier had a toroidal transformer would it be of benefit or no difference?

The B200 has no power transformer, which is the usual role for a toroidal transformer in audio gear. In fact, it has no transformers and no power supply -- the required DC voltage is supplied by the power brick provided with it.

 

[totti1965]

Purifi mono only $70 more

Link?

 

[amirm]

Was the power sweep done with one Khz? Please test it with lower bass frequencies like 30 to 120 Hz.

That was done:

 

[Tlow98]

Well, this is exciting. My b200s are boxed and awaiting the pre90 that arrives tomorrow. Yay!

Great timing - thanks @amirm ! I feel like a kid on Christmas morning

This is my first ‘big boy’ setup. I have a feeling my Elac UBR62 might be holding me back a bit, but that’s a worry for another day.

Update. It’s all powered up and I’m listening to them.

I’m a pretty big nOOb in here, but I can say I’ve never heard music like this before. Thank you all for being so helpful!

It’s all the little things. It’s all different, and, well, better. I was worried they wouldn’t be much of a step up from the PA7 (non plus). It’s a big upgrade.

 

[Lambda]

@amirm Are all the measurements, except for the power measurements, taken with purely resistive loads?

I would love to know how the other measurements—especially those versus frequency and multitone—change with real speaker impedance like this.

I can speculate that the sudden changes in impedance and phase, going from inductive to capacitive loads, would pose a challenge to some amps—especially Class D, which sometimes behaves strangely with non-standard impedance loads.

Lots of speculation, but it would be nice to see data, especially from an "ideal" amp like this compared to some cheap Class D amps.

 

[amirm]

I would love to know how the other measurements—especially those versus frequency and multitone—change with real speaker impedance like this.

The amp has near zero, frequency independent output impedance. So it is as uncaring about the load you can get, subject to its max current and voltage.

As to using a speaker, the back EMF causes serious measurement errors. We went through this with headphones a while back.

 

[Lambda]

As to using a speaker, the back EMF causes serious measurement errors. We went through this with headphones a while back.

I would imagine the Back EMF "upsetting" the output of an Amp and change the measurement significantly.
But since Reals speakers have back EMF this is a Realistic scenario i would say it's a fair test and not a Measurement error.

The amp has near zero, frequency independent output impedance.

And Yes i would think this Amp would do exceptionally well in this test. unlike some Class D Amps.

 

[NTK]

I would imagine the Back EMF "upsetting" the output of an Amp and change the measurement significantly.
But since Reals speakers have back EMF this is a Realistic scenario i would say it's a fair test and not a Measurement error.

The AP analyzer cannot differentiate whether the signal voltages it records is from the amplifier or, in case of reactive loads, the load. The voltages (back EMF) generated by the load are read/measured by the AP analyzer along with the true output from the amplifier, and therefore screw up the measurements.

 

[Lambda]

The AP analyzer cannot differentiate whether the signal voltages it records is from the amplifier or, in case of reactive loads, the load. The voltages (back EMF) generated by the load are read/measured by the AP analyzer along with the true output from the amplifier, and therefore screw up the measurements.

Yes But it dose not have to differentiate whether the signal voltages it records is from the amplifier or, in case of reactive loads, the load.
An ideal Amp is a Voltage source with Low Output impedance is less (ideally Not at all) influenced by any Currents (not voltage) coming from the reactive load.

The more The voltage at the Amp is Influenced from any currents (back EMF) from the speaker the wores the amp.

 

[NTK]

Yes But it dose not have to differentiate whether the signal voltages it records is from the amplifier or, in case of reactive loads, the load.
An ideal Amp is a Voltage source with Low Output impedance is less (ideally Not at all) influenced by any Currents (not voltage) coming from the reactive load.

The more The voltage at the Amp is Influenced from any currents (back EMF) from the speaker the wores the amp.

The effect of the back EMF is almost completely influenced by the output impedance of the amplifier. So, the higher the output impedance, the worse the numbers will look.

 

[Lambda]

the higher the output impedance, the worse the numbers will look.

Because the Worse they are.

almost completely influenced by the output impedance

But it gets interesting if the amp has complex output impedance and or active feedback like for example class d with post filter feedack

 

[pogo]

too little testing

We call it Endurance Test

 

[jdjung]

I got one of those running with Wiim Pro, Topping D70 and Nord Hypex. Very happy with it for bedroom listening.

Maybe then the Kef R7 Meta. Seems good bang for the buck for towers if that's what you're looking for with a PS of 7?

 

[NTK]

Because the Worse they are.

But it gets interesting if the amp has complex output impedance and or active feedback like for example class d with post filter feedack

I invite you to perform an engineering analysis to show how the output impedance of an amplifier influence the mechanical motion of the speaker driver diaphragm, given that there is usually a crossover filter network in between, and if it is used as a direct drive in active speakers, the coil impedance (DC resistance and coil inductance), plus all the other electromechanical factors. Then come back with the results and try to convince us again.

 

[Old_School_Brad]

I invite you to perform an engineering analysis to show how the output impedance of an amplifier influence the mechanical motion of the speaker driver diaphragm, given that there is usually a crossover filter network in between, and if it is used as a direct drive in active speakers, the coil impedance (DC resistance and coil inductance), plus all the other electromechanical factors. Then come back with the results and try to convince us again.

Isn't that basically the same as saying cable gauge and length don’t matter? Of course, they do -just beyond certain thresholds.

It’s just that, in typical residential audio setups, those thresholds are rarely a concern.