Qudelix-5K Bluetooth DAC & Headphone Amp

[Jimbob54]

Hi,
I have connected it via USB to a Mac and to a PC and they detect it well, but I don't hear anything when I connect in headphone. What happen?

Maybe the 5k isn't selected as the output device in your computer or player software?

 

[Brianc]

Has anyone updated to 2.1 firmware yet? I'm hoping it corrects some of the glitches of the 2.0 upgrade (app crashing mainly)

 

[Berwhale]

Has anyone updated to 2.1 firmware yet? I'm hoping it corrects some of the glitches of the 2.0 upgrade (app crashing mainly)

Is 2.1 available? My Q5K has upgraded twice since I went to 2.0, i'm currently running 2.0.2. 2.0.2.1 is the latest version mentioned on the forums, I can't seem to get it yet...

All new Qudelix-5K v2.0 software

All new Qudelix-5K v2.0 software We're happy to release the 5K v2.0 software. We're releasing the Chrome App first. We'll release the mobile app in a few days. *Please note that the v2.0 firmware works with the v2.0 apps only. Once you update the firmware using the Chrome app v2.0, you can...

forum.qudelix.com

 

[Fernando]

Maybe the 5k isn't selected as the output device in your computer or player software?

Maybe?
It would be funny, but it is well selected.

 

[Jimbob54]

Maybe?
It would be funny, but it is well selected.

Can you get sound from it via any connection? Bluetooth?

 

[Fernando]

Can you get sound from it via any connection? Bluetooth?

If I connect it via bluetooth, yes.

 

[CedarX]

Can you control the Q5K with the Chrome add-in when it's connected to a PC?

Qudelix - Chrome Web Store

Qudelix-5K Bluetooth DAC AMP Remote Controller

chrome.google.com

Yes… It offers the same features as the IOS/Android app. You can even do weird things such as playing a track from your phone through BT and controlling the Q5K via the Chrome extension through USB. The audio input, USB, BT1, BT2, and control are really independent.

 

[Phoney]

You can now fill in the impedance and sensitivity of a headphone to know how loud you're listening. My question is: my Meze 109Pro is advertised as 40 ohm and 112dB SPI at 1KHz, 1mW. According to sounstage network, its average impedance is at 43 ohm and the sensitivity is 110.4, but sensitivity is calculated for 40 ohms impedance and averaged from 300Hz to 3kHz. So, judging by this should I input 43 ohm? And what about the 110.4 sensitivity, if that's measured for 40 ohms, it means that it can't be right to input that when I input 43 ohm instead of 40, right? Is it correct to use the sensitivity measured at 1khz, or is the average from 300hz to 3khz better? And why do they not measure the entire frequency range, instead of just 300-3khz?

 

[Rottmannash]

Ever since I updated the app I cannot have the phone connected for audio only calls. Any clue why this is? This is via Bluetooth connection.

 

[toge]

has qudelix said they would release a version 2 with a 4.4 bal replacing the 2.5 bal?

 

[Berwhale]

has qudelix said they would release a version 2 with a 4.4 bal replacing the 2.5 bal?

Not that i'm aware off, although some have asked for this on their forum. I think they'd have to make the unit larger (or drop the 3.5mm as well) to fit a 4.4mm socket in there.

 

[CedarX]

Not that i'm aware of, although some have asked for this on their forum. I think they'd have to make the unit larger (or drop the 3.5mm as well) to fit a 4.4mm socket in there.

It would also require developing an adapter for the Qx-over. I don’t know how important is that IEM for Qudelix portfolio, but the current 2.5/3.5mm configuration is not entirely proprietary: the same connector is (was?) used on Samsung AV products. In theory, a 4.4mm Pentaconn has the 5 wires required for the Qx-over, but Qudelix would have to implement some clever impedance-based detection mechanisms to enable the 4-channel mode used on the Qx-over—may be possible with the impedance measurement feature of the ESS chip, but certainly a major change!

 

[toge]

It would also require developing an adapter for the Qx-over. I don’t know how important is that IEM for Qudelix portfolio, but the current 2.5/3.5mm configuration is not entirely proprietary: the same connector is (was?) used on Samsung AV products. In theory, a 4.4mm Pentaconn has the 5 wires required for the Qx-over, but Qudelix would have to implement some clever impedance-based detection mechanisms to enable the 4-channel mode used on the Qx-over—may be possible with the impedance measurement feature of the ESS chip, but certainly a major change!

but an adapter could convert the 2.5 bal to 4.4 bal at the moment?

 

[staticV3]

but an adapter could convert the 2.5 bal to 4.4 bal at the moment?

For regular 2.5/4.4mm headphones, one of the many available adapters will work just fine.
But for the QX-Over, a custom-made adapter would be required:


Or more realistically, a separate version with the right connectors built in.

 

[CheepShot]

Is it me or is the NOS filter that came with the latest firmware a little louder than the others? To my ears it seems the clearest and a welcome addition.

 

[Asking Dumb Questions]

Does this have a Line Out Option / Function via 2.5mm?

 

[staticV3]

Does this have a Line Out Option / Function via 2.5mm?

2.5mm shouldn't be used as Line out because it doesn't have GND. It's a pure headphone out connector.

 

[Asking Dumb Questions]

2.5mm shouldn't be used as Line out because it doesn't have GND. It's a pure headphone out connector.

Thanks, Do you have experience with the S9 Pro Dongle? Can I use that 2.5mm as Line Out?

 

[Jimbob54]

Thanks, Do you have experience with the S9 Pro Dongle? Can I use that 2.5mm as Line Out?

I think his reply was for 2.5mm headphone jacks generally, not just the Q5k

 

[Phoney]

2.5mm shouldn't be used as Line out because it doesn't have GND. It's a pure headphone out connector.

Isn't it possible with a solution like this? Using the 3.5mm as GND?