This is my story with the Capri Lightning cable, and it is a sad one. The below mails have been sent to Null Audio support, with just one useless reply.
Sent 09/20/2017:
Dear Null Audio support,
I received my Lightning Capri Cable. I tried it with iPhone 7 and iPad Air and am totally disappointed. What I got from you is a peace of junk. It has nothing to do with the tech specs that you published.
Now I wonder if you have broken the device with your latest firmware? The state that I have can not have been shipped before, users would have complained in all channels about the low volume of the cable!
Here is a simple comparison of the Apple dongle with the Capri cable, with an output signal of 0 dBFS 1 kHz sine.
Apple Dongle @ 16 Ohm
iPhone 7: 480 mV = -4.1 dBu, 15 mW
iPad Air: 970 mV = +1.9 dBu, 59 mW
Capri Cable @ 16 Ohm
iPhone 7: 190 mV = -12 dBu, 1,2 mW
iPad Air: 190 mV = -12 dBu, 1,2 mW
Apple Dongle @ 32 Ohm
iPhone 7: 470 mV = -4.3 dBu, 7 mW
iPad Air: 980 mV = +2.0 dBu, 30 mW
Capri Cable @ 32 Ohm
iPhone 7: 290 mV = -8.5 dBu, 2,6 mW
iPad Air: 290 mV = -8.5 dBu, 2,6 mW
Output level / volume loss of Capri against Apple Dongle:
iPad Air: 32 Ohm -10.5 dB, 16 Ohm -13.9 dB
iPhone 7: 32 Ohm -4.2 dB, 16 Ohm -7.9 dB
These numbers can not be as you advertize the cable with 128 mW @ 16 Ohms, and that's why I bought it. I need more power than the Apple dongle provides. These numbers also question your tech spec of an output impedance of <1.0 Ohms. How can the output level drop then by 3.5 dB when changing from 33 to 16 Ohms?
Current firmware is 2.1.9.
Awaiting your reply
Sent 09/24/2017:
Dear Null Audio support,
I have sent the below mail on September 20. Did you receive it? I have not heard from you so far, and the state of the information contained below should bring you in full alert mode!
> Received 09/24/2017:
Hi,
Thanks for your feedback. We are checking on the specs and will get back to you later.
Sent 09/29/2017:
Dear Null Audio support,
I am amazed how long you need to check that your cable works as advertized. My measurements took 5 minutes. I am waiting on a comment from you now for 9 days...
Sent 10/09/2017:
Well,
due to you not replying nor contacting me in any way the obvious conclusion is: you do have serious problems, my measurements are all correct, and the product is not at all what you still advertize on your website.
This is my last attempt to keep this silent. If you don't reply with something more meaningful than 'we are checking' within the next 48 hours I will go public/online with my findings.
Nothing received even 5 days later. Note that I got a second generation cable supposedly hiss-fixed. Indeed there is no hiss with a ProPhile 8, but with a lower volume as the Apple dongle that would have been even more hilarious. Note also that I have a EU iPhone which has lower output level than a US one due to EU regulations (but that doesn't influence/change the Capri values at all). You can draw your own conclusions from the above. Mine are:
- Null Audio / AAW failed measuring and real-world testing already in the first stage, otherwise they would not have shipped cables with audible hiss and a too low mic volume
- The few tech specs that they published are not measured/real world values, but just written down from the components data sheet
- The cable is not worth buying