Topping B100 Amplifier Review

[antcollinet]

No one has ever told me that they have a gap in their hearing

I have a similar gap - right ear, centred around 6kHz where my tinnitus lies. I know exactly what caused mine:

Motorhead: 1982, Leicester De Montfort Hall.

 

[Julf]

I imagine that I am not the only one that actually has a gap in my hearing response. In my right ear, from 7K to 8K I do not hear a thing. It is unknow what caused that, but that is the way it is.

Used to be very common among pilots flying aircraft with older jet engines.

 

[EJ3]

Used to be very common among pilots flying aircraft with older jet engines.

Thank you! Proves that I am not the only one.
Perhaps it's something that happened being around a pair of 36,000 HP jet fuel running turbines for 17 years of my working life. (Like in the same room or an adjacent room).
But I did not notice it until I did a hearing test using my headphones and then reversed my headphones because I noticed it and thought that the headphones had an issue. But it did it again at the same FR in the same ear. So, then I checked it a few different times with the same results.
But no audiologist test that I have ever taken in their little sound proof booth has ever said anything about it.
I did not think that I was supposed to tell them (I could not have, anyway, as I did not know that it was there until I discovered it on my own).

 

[Julf]

Thank you! Proves that I am not the only one.
Perhaps it's something that happened being around a pair of 36,000 HP jet fuel running turbines for 17 years of my working life. (Like in the same room or an adjacent room).

Yes, that would do it.

 

[EJ3]

I have a similar gap - right ear, centred around 6kHz where my tinnitus lies. I know exactly what caused mine:

Motorhead: 1982, Leicester De Montfort Hall.

I have tinnitus also. But while that is at slightly different frequencies in each ear, it is in both ears.

 

[Skj]

Different for different people, for sure.

So what about this 118db limit ? Is it correct for most ( subjective) ?

 

[EJ3]

So what about this 118db limit ? Is it correct for most ( subjective) ?

I never heard of 118 DB limit. What is that for?
When I did night club systems, they did have limiters on them but they were adjustable.
the owners would decide what the level would (usually in conjunction with the waitresses) be set to, depending in the vagaries of the band and the sound, the density of the crowd and many other factors.

 

[antcollinet]

So what about this 118db limit ? Is it correct for most ( subjective) ?

If you are asking about audible limits for human hearing, we have this:

Audibility thresholds of amp and DAC measurements

Introduction A recurring theme on ASR is whether or not the various measured qualities of the devices are audible. In this post, I'll present some clear and visual thresholds for when those imperfections can be considered a potentially audible concern. I will not explain the basics of amp/DAC...

www.audiosciencereview.com

Bear in mind that for pretty much everyone - pretty much all of the time the lenient limits will apply. Strict limits apply even for your proverbial teenager who's never been exposed to loud noises, trained in what to listen for, in a soundproof room listening with headphones. Even then they might not get there.

 

[Skj]

If you are asking about audible limits for human hearing, we have this:

Audibility thresholds of amp and DAC measurements

Introduction A recurring theme on ASR is whether or not the various measured qualities of the devices are audible. In this post, I'll present some clear and visual thresholds for when those imperfections can be considered a potentially audible concern. I will not explain the basics of amp/DAC...

www.audiosciencereview.com

Bear in mind that for pretty much everyone - pretty much all of the time the lenient limits will apply. Strict limits apply even for your proverbial teenager who's never been exposed to loud noises, trained in what to listen for, in a soundproof room listening with headphones. Even then they might not get there.

It was about sinad limit of 118db which someone referred somewhere. Is it true beyond 118db sinad does not matter?

 

[Julf]

It was about sinad limit of 118db which someone referred somewhere. Is it true beyond 118db sinad does not matter?

Even if your system could produce 120 dB SPL, do you think you could hear something at 2 dB SPL (120 - 118)? Your listening room probably has a noise floor above 30 dB SPL...

 

[antcollinet]

It was about sinad limit of 118db which someone referred somewhere. Is it true beyond 118db sinad does not matter?

Much less than that for pretty much everyone pretty much all of the time. If you've got 100dB you are golden. Even if your hearing is capable of hearing below that it will be so hard to hear - so slight - that it can't possibly impact your listening enjoyment.


Here, test your own hearing - how low can you hear distortion with music for example?

Listening Test

www.klippel.de

 

[Krampi]

Hello, forum members!
Could someone tell me whether the B100's balanced input is DC-coupled or uses a coupling capacitor? If it uses a coupling capacitor, what is its value?
Thank you! Dee'