When not in Bluetooth input mode, Bluetooth is turned off.
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O-Noorus D3 PRO - A new TPA3255 PFFB amplifier with DAC
- Thread starter Audionaut
- Start date
Is it though? I’ve heard that in the past regarding all sorts of devices using similar chipsets. The radio emission remains active regardless. For example my Topping, I can physically turn the radio off through a setting and can easily verify the radio is infact off.
Bluetooth advertising has stopped。
Already the latest。
Thanks, that confirms what info I was after. Advertising off means radio still on. Nice product, shame the simple option to turn radio off when the module is basically taking care of digital side of things should be an option, really isn’t hard to implement. Hats off to Topping in that regard. Nevertheless, thanks for the reply.
No, the broadcast will stop, the connection will be disconnected, and the playback will stop.
With respect, I agree to that, but my point is the radio will still be on regardless. Try an RF meter near it with the antenna attached and prove me otherwise? For instance I have other devices that use the same family of module with similar software setups and they all still emit radio, even if it’s not visible. With Topping, software directs the module to switch the radio hardware off via a usable setting, which is great. Simply disconnecting and changing input doesn’t turn the module radio off. Would like to see proof before I consider moving on from my Topping.
I don't have an RF analyzer machine right now。
ICIETDIYEUR
Addicted to Fun and Learning
Be careful because we live dangerously with RF signals: everyone uses Wi-Fi, smartphones, etc., etc.: are you going to live in a Faraday cage? (LOL)
This kind of remark makes me think of another that a comedian said back home (in France): "Give them the Sahara and in a month they will tell you that they no longer have sand"...
... O-NOORUS will soon have to consider a device that also prepares coffee or tea for the morning (LOL)
It's possible if Alexander offers a PELLETIER effect plate that connects to the amp's USB instead of the finned heat sink
1> the amplifier will be better cooled
2> the coffee or tea will be hot
That said: no one has ever used this process to cool a TPA chip...
Slave to the rise in PVDD voltage (therefore, the rise in power) this would make it possible to have a constant temperature for the chip (I said that but I didn't say anything).
I hope TOPPING doesn't read this: they can do it!
'There must be a specific temperature for TPA chips at which it produces the least distortion: this has to be measured...)
This kind of remark makes me think of another that a comedian said back home (in France): "Give them the Sahara and in a month they will tell you that they no longer have sand"...
... O-NOORUS will soon have to consider a device that also prepares coffee or tea for the morning (LOL)
It's possible if Alexander offers a PELLETIER effect plate that connects to the amp's USB instead of the finned heat sink
1> the amplifier will be better cooled
2> the coffee or tea will be hot
That said: no one has ever used this process to cool a TPA chip...
Slave to the rise in PVDD voltage (therefore, the rise in power) this would make it possible to have a constant temperature for the chip (I said that but I didn't say anything).
I hope TOPPING doesn't read this: they can do it!
'There must be a specific temperature for TPA chips at which it produces the least distortion: this has to be measured...)
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FYI amigos
www.audiophonics.fr
O-NOORUS D3 PRO Amplifier
The O-Noorus D3 Pro is a powerful integrated amplifier based on numerous audiophile components.
www.audiophonics.fr
ICIETDIYEUR
Addicted to Fun and Learning
People hi
Personally I think that ALEXANDER did a very good job with this device
...
...let's wait to see Amirm's review to be sure
We can still say in advance that the features are numerous and that the performance seems to be there.
The price seems to be in line with the device based on what the competition offers it seems to me.
NB:
The PFFB seems to be effective since the measurements indicate a slight increase with 8 Ohms load (~ 0.5dB) at 20KHz which is one of the best results obtained for this type of amplifier in general:
BRAVO !
PS:
As it is 4 times more powerful than the SCIBER AMPLOI then it should be offered at 4 times more expensive (LOL, LOL, LOL...)
Personally I think that ALEXANDER did a very good job with this device
......let's wait to see Amirm's review to be sure
We can still say in advance that the features are numerous and that the performance seems to be there.
The price seems to be in line with the device based on what the competition offers it seems to me.
NB:
The PFFB seems to be effective since the measurements indicate a slight increase with 8 Ohms load (~ 0.5dB) at 20KHz which is one of the best results obtained for this type of amplifier in general:
BRAVO !
PS:
As it is 4 times more powerful than the SCIBER AMPLOI then it should be offered at 4 times more expensive (LOL, LOL, LOL...)
Last edited:
HiPeople hi
Personally I think that ALEXANDER did a very good job with this device
...let's wait to see Amirm's review to be sure
We can still say in advance that the features are numerous and that the performance seems to be there.
The price seems to be in line with the device based on what the competition offers it seems to me.
NB:
The PFFB seems to be effective since the measurements indicate a slight increase with 8 Ohms load (~ 0.5dB) at 20KHz which is one of the best results obtained for this type of amplifier in general:
BRAVO !
PS:
As it is 4 times more powerful than the SCIBER AMPLOI then it should be offered at 4 times more expensive (LOL, LOL, LOL...)
Really, no offense, but you often fall into confirmation bias. I understand you participated in the design of the D3 Pro, but if I were you, I'd wait for the ASR test and avoid being too subjective.
Furthermore, here is what we expect from a correct implementation of the PFFB
I suggest waiting for the ASR test to confirm what you say on this point.
Mike_Trueman
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Nice European price.
ICIETDIYEUR
Addicted to Fun and Learning
Hello daniboun
Who told you I was involved in any way with the D3 PRO or other models?
Now looking at the 3eAudio A7 which has hidden its PFFB circuits with resin, although it seems that this is a (close) 'copy' of what is done in the TOPPING PA5II, it costs a little over a hundred euros more than the D3 PRO (379 euros compared to 255 euros in France) with much fewer features (which reduce performance linked to interference between components as we have already observed) while still retaining results quite close to the A7 and better than the competition
The D3 PRO also does not 'suffer' from any notable difference in gain between the low level stages (among other things) but above all it is a combo with DAC, which is not negligible if we compare its two devices.
I also think that if ALEXANDER were to offer a 'simple' amplifier, as is the case with 3eAudio, it would surely be very interesting technically speaking: the future will tell...
Who told you I was involved in any way with the D3 PRO or other models?
Now looking at the 3eAudio A7 which has hidden its PFFB circuits with resin, although it seems that this is a (close) 'copy' of what is done in the TOPPING PA5II, it costs a little over a hundred euros more than the D3 PRO (379 euros compared to 255 euros in France) with much fewer features (which reduce performance linked to interference between components as we have already observed) while still retaining results quite close to the A7 and better than the competition
The D3 PRO also does not 'suffer' from any notable difference in gain between the low level stages (among other things) but above all it is a combo with DAC, which is not negligible if we compare its two devices.
I also think that if ALEXANDER were to offer a 'simple' amplifier, as is the case with 3eAudio, it would surely be very interesting technically speaking: the future will tell...
Guddu
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I know that you (and me as well) would like to see independent measurements but just pointing out that measurements are posted on Audiophonics link you posted as well as O-Noorus website and it looks like this:
This is exactly why I am doubtful... We see here a load dependency under 8R but the ASR test will tell us more....
ICIETDIYEUR
Addicted to Fun and Learning
Hi
danyboun you said: "... We see here a load dependency under 8R but the ASR test will tell us more......."
Wich ASR test ?
Amirm test ?
danyboun you said: "... We see here a load dependency under 8R but the ASR test will tell us more......."
Wich ASR test ?
Amirm test ?
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