[RTodd]

The C9 is not only with the ability to scale tremendously with headphones cables, but it also scale very well with upgraded InterConnect.

The stock IC isn’t bad, but it could be better as there are better quality out there. It could be a little expensive though, but will be worth it

What would happen to the 300 if the line out was shorted? Is there built in protection for that within the 300 output circuit?

 

[Whitigir]

What would happen to the 300 if the line out was shorted? Is there built in protection for that within the 300 output circuit?

Now that is something to think about. The Dx300 uses one buffer for amplifier and also act as a differential when needed for Single ended and Line out with the firmware controls. Essentially speaking, I don’t think you can short the Output of the Dx300. However, the Power supply is on the amp module itself and what would happened if the power sources has some bad management ? Idk, I don’t have the schematic of Dx300 and haven’t looked into it too much.

 

[RTodd]

Now that is something to think about. The Dx300 uses one buffer for amplifier and also act as a differential when needed for Single ended and Line out with the firmware controls. Essentially speaking, I don’t think you can short the Output of the Dx300. However, the Power supply is on the amp module itself and what would happened if the power sources has some bad management ? Idk, I don’t have the schematic of Dx300 and haven’t looked into it too much.

Not sure I understand the answer, just thinking if the pre-out was shorted that it would pull the max current through the circuit until something breaks. That is if there was no protection built in, which I would think there would be, as that would be easy to do with a bad cable for example, one the cat got a hold of.

 

[xand]

Not sure I understand the answer, just thinking if the pre-out was shorted that it would pull the max current through the circuit until something breaks. That is if there was no protection built in, which I would think there would be, as that would be easy to do with a bad cable for example, one the cat got a hold of.

But would the c9 work if there was such a short? Presumably not?

 

[Whitigir]

Not sure I understand the answer, just thinking if the pre-out was shorted that it would pull the max current through the circuit until something breaks. That is if there was no protection built in, which I would think there would be, as that would be easy to do with a bad cable for example, one the cat got a hold of.

A bad cables with L+ and R+ shorted would possibly be damaging the Dx300 amp....but that it would also damage the C9....and you wouldn’t be hearing music lol
Common mistakes happened when L- and R- are shorted to ground because the user mistakenly plugged Balanced out into a cables that has single ended end. But this can not happen on Dx300 stock amp as the Dx300 can differentiate and enable SE line out

**I never seen L+ and R+ to be shorted, unless possibly some mistake in DIY cables that wired 2.5mm into 3.5 mm under a wrong polarities** ? That would be some thing very special and unique instances though

I do not think there is any amplifier that has built in protections for shorting out the signals

 

[RTodd]

But would the c9 work if there was such a short? Presumably not?

Not during the short but I think it would work after with a different working source, and if it was the same cable you either got lucky with how it was bent and did not produce the short, would definitely recommend a continuity check of the unconnected cable, if no meter available any low voltage device could be used like a battery and a flashlight bulb to check the interconnect cable for shorts. If this shorted line out is what happened than it could have happened inside the DX300. Whitgr does not think it is even possible to short the pre-out, and I do not doubt his experience.

 

[RTodd]

A bad cables with L+ and R+ shorted would possibly be damaging the Dx300 amp....but that it would also damage the C9....and you wouldn’t be hearing music lol
Common mistakes happened when L- and R- are shorted to ground because the user mistakenly plugged Balanced out into a cables that has single ended end. But this can not happen on Dx300 stock amp as the Dx300 can differentiate and enable SE line out

**I never seen L+ and R+ to be shorted, unless possibly some mistake in DIY cables that wired 2.5mm into 3.5 mm under a wrong polarities** ? That would be some thing very special and unique instances though

I do not think there is any amplifier that has built in protections for shorting out the signals

I guess both channels would have to be shorted to ground to blow both channels in the line out circuit. No getting around, the 300 should be sent back for evaluation and repair.

 

[zen87192]

May I ask if someone could give their views on these 4.4mm to 4.4mm interconnects to connect a C9 to an N6ii A02 please? Not many to choose from out there unless one custom makes them which then gets very expensive. if you have any recommendations of your own please let me know. Thanks for your time.

https://penonaudio.com/penon-totem-audio-cable.html

https://zeppelinandco.com/products/...player-tws-hum-tara-ic?variant=29593493209160

https://www.lazada.sg/products/44mm...ect-cable-by-infinite-cables-i1449040483.html

https://www.amazon.co.uk/dp/B08KTJ4...colid=24PFG2R6A5UX&psc=1&ref_=lv_ov_lig_dp_it

https://www.ebay.co.uk/itm/4-4mm-Ma...&_trksid=p2060353.m1438.l2649&redirect=mobile

https://www.ebay.co.uk/itm/Audiocra...trksid=p2047675.c101195.m1851&redirect=mobile

 

[xand]

I just listened for apparently 5 hours..

I need to buy a second battery set >.<

 

[zen87192]

Then there are these that I've just found on the 'tinternet.... Whoa!

http://qdc-music.com/han-sound-audio-hs-i44bg-interconnect-4-4-to-4-4-with-gnd/

https://www.romiaudio.com/product-page/encryption-series-sensation-male-to-male-audio-cable

 

[DaYooper]

I looked at that Romi Audio page recently too, had to go change my shorts.

 

[xand]

I looked at that Romi Audio page recently too, had to go change my shorts.

Too much male to male sensation?

 

[Shecky504]

The DX300 ran fine for over a month. The week I start using the C9 the DX300 amp blew. Got the new amp and the DX300 worked fine again. I started using the C9 and again the amp blew within a week. It seems to be an issue with the C9 but I don’t know for sure. Paul from iBasso said it is possible that the C9 is grounding the negative side of the balanced circuit, which would blow the op amps for the negative side.

 

[RTodd]

The DX300 ran fine for over a month. The week I start using the C9 the DX300 amp blew. Got the new amp and the DX300 worked fine again. I started using the C9 and again the amp blew within a week. It seems to be an issue with the C9 but I don’t know for sure. Paul from iBasso said it is possible that the C9 is grounding the negative side of the balanced circuit, which would blow the op amps for the negative side.

C9 and 300 both need repair than?
That sucks. Is Paul having you return the C9 to have it checked.

 

[Whitigir]

The DX300 ran fine for over a month. The week I start using the C9 the DX300 amp blew. Got the new amp and the DX300 worked fine again. I started using the C9 and again the amp blew within a week. It seems to be an issue with the C9 but I don’t know for sure. Paul from iBasso said it is possible that the C9 is grounding the negative side of the balanced circuit, which would blow the op amps for the negative side.

Grounding the Negative side of the Ibasso ? That would mean the L- and R- would also be shorted to ground on the C9. If that is the case, then the C9 itself would be damaged too, not just DX300

Still doesn’t make sense to me. If the C9 shorted itself from L- or R- to ground then you would not have any sound on 1 channel that is shorted