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WolfX700 Measurement of Topping A90 Headphone Amp
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mt196
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Is it possible to feed A90 with XLR in, but then use RCA outs and not XLR outs?
2nd question: are XLR output true balanced output (as I think) or are they bi-phase? I am asking just to be sure since if the previous asked method cannot be done, I will have to create an XLR to RCA cable and I wanted to be sure it is truly balanced output in order to ground the pins
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Veri
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mt196
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Yeah I saw the back panel but I wasn't sure they are bot outputting at the same time regardless of what it is connected in the inputs
By the way, if I remember correctly, you were one of the users suggesting not to use XLR to RCA cables, am I right?
Veri
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Oh I didn't realise you meant at the same time. Better ask @JohnYang1997 for confirmation on that. XLR to RCA is not ideal since either way you are breaking the excellent common mode rejection and could introduce problems/distortion.Yeah I saw the back panel but I wasn't sure they are bot outputting at the same time regardless of what it is connected in the inputs
mt196
Active Member
I have a Anaview AMS0100 module as amplifier, and I built it with RCAs, sure I can modify it and use it with XLR but it will mean to change also its case, so maybe it is better to just use RCAs. If JhonYang confirms that whether I use XLR or RCA as an Input, I can always use RCA as output, I will just use RCAs and be happy with it.
RCA inputs will be converted to balanced XLR outputs with differential signals.
mt196
Active Member
But what if I use XLR input on the A90 and want to use A90 RCA outputs, can I do that?
yes
Thank you JohnYang1997 for solving our doubts. It is fortunate to have someone who knows these equipment so well.
Talking about the connections. Dough loops is something that worries me a bit, it would be a shame not to take full advantage of the system performance for it.
Taking into account that I am using a PC and would like to connect active speakers (RCA) (without grounding) to the D90 / A90 system
From the point of view of the ground loops, I suppose it will be indifferent that you use the RCA outputs of the D90 or those of the A90 for this, although the connection between them is balanced (XLR)
I suppose that in these cases, the D90 would not isolate the PC ground from the rest of the system ¿What could be the best option?
Thank you.
Talking about the connections. Dough loops is something that worries me a bit, it would be a shame not to take full advantage of the system performance for it.
Taking into account that I am using a PC and would like to connect active speakers (RCA) (without grounding) to the D90 / A90 system
From the point of view of the ground loops, I suppose it will be indifferent that you use the RCA outputs of the D90 or those of the A90 for this, although the connection between them is balanced (XLR)
I suppose that in these cases, the D90 would not isolate the PC ground from the rest of the system ¿What could be the best option?
Thank you.
no
Veri
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There is a toggle so it's either one of the other.
Hi.
Sorry if it has already been published, but I find these links interesting. A summary table of specifications and manual.
https://shenzhenaudio.com/products/topping-a90-headpone-amplifier
https://www.audiophonics.fr/en/index.php?controller=attachment&id_attachment=1325
Sorry if it has already been published, but I find these links interesting. A summary table of specifications and manual.
https://shenzhenaudio.com/products/topping-a90-headpone-amplifier
https://www.audiophonics.fr/en/index.php?controller=attachment&id_attachment=1325
mt196
Active Member
Probably they are waiting for some sort of confirmation of availability from topping maybe due to too many orders that they don't know if they will be able to fulfill
Tks
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Look at that spec sheet. 1w output into 300ohms?! over 6w into 32ohms?
I cannot wait to hear someone say something ridiculous: "It's a powerful amp, but I could use a bit more power for my X headphones using balanced, you should know X is pretty hard to drive for any amp".
Meanwhile I'm here on my RME using the 3.5mm Low Power jack using HD58X's and I'm about to go deaf if I crank it to the max volume..
I cannot wait to hear someone say something ridiculous: "It's a powerful amp, but I could use a bit more power for my X headphones using balanced, you should know X is pretty hard to drive for any amp".
Meanwhile I'm here on my RME using the 3.5mm Low Power jack using HD58X's and I'm about to go deaf if I crank it to the max volume..
Then you have people like my friend, who last night was trying out my LCD-3's balanced through my Monolith THX amp, I went to use the bathroom, and all of a sudden I can hear clearly, and loudly, the tune he was jamming! I go back out to the living room, he's got the amp on high gain, and the volume knob all the way cranked! I'm motioning for him to take them off so he doesn't blow out his ears, and he says, " damn, I can't get these things to distort". I'm like, how the Hell can you hear anything, let alone distortion??!! WTF, lol??
Neither susvara nor the new he6se are really hard to drive. Only the original he6 and akg k1000 are hard to drive. Minimal difference can be heard once you pass magni3 performance.
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