Cayin RU6: R-2R USB Dongle DAC with Head-Amp
Mar 1, 2022 at 6:19 PM Post #2,147 of 3,686
ive been using my RU6 with my iphone with the included usbc to usbc cable and TC28i adapter and it has worked fine.
 
Mar 1, 2022 at 6:44 PM Post #2,148 of 3,686
I really love the sound of the RU2. So much so that I purchased an RS6. However, I find that I don't use at all these days. I need to be able to control the volume from the source. That doesn't mean it's a bad product by any stretch; just not suitable for my specific use case.

I'm going to sell it with an unused blue case for 220USD (including shipping to cont. US). It is in excellent condition. Unfortunately I'm not able to find the original USB C>A adapter so I'm including the one from my LP W2.

If you're interested in a much loved, but little used RU2, shoot me a pm.
I'm the opposite. Now I have RU6, I'm planning on selling my RS6. My only complaint with RU2 is that it drains phone battery very fast.
 
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Mar 1, 2022 at 6:52 PM Post #2,149 of 3,686
I'm the opposite. Now I have RU2, I'm planning on selling my RS6. My only complaint with RU2 is that it drains phone battery very fast.
what is the RU2?
 
Mar 1, 2022 at 9:54 PM Post #2,151 of 3,686
The dreaded EMI noise problem is still not solved even with my new FiiO shielded cable. It is less prominent though. But when carrying the RU6 and my phone in the same pocket, it will inevitably happen.

The RU6 shielding if it exists at all is really really bad.

This is still one of the best sounding dongle DACs in the World but if I had to review it now, I would give it 4 stars out of 5, because it cannot be used as intended with a phone on the go.

I will still try to get the leather case and DIY a shielding layer with aluminum foil inside of it, but there is no guarantee it will work
I use the RU6 with my iPhone when I’m commuting.. no EMI detected so far..

Another possible reason could be your headphone cables.. if they are properly built and shielded?
 
Mar 2, 2022 at 11:47 AM Post #2,152 of 3,686
Received today from fiio.de From dimensions seems similar to cayin cable. I will try soon
Edit: with ibasso dongles and samw phone never heard interference
 

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Mar 2, 2022 at 1:05 PM Post #2,153 of 3,686
@kadinh thanks for pointing out my error. I've corrected my post. :face_palm:
sorry, i was just making sure i wasnt missing a new/different device. hope my post didnt come off wrong!
 
Mar 2, 2022 at 1:25 PM Post #2,155 of 3,686
Mar 2, 2022 at 3:36 PM Post #2,157 of 3,686
Tried fiio cable. Same thing of cayin cable. So save your money. And if i move the cable i loose the connection lol
Money on garbage
 
Mar 3, 2022 at 5:02 PM Post #2,158 of 3,686
Received my RU6 today. I have only been able to use it a short while. Initial impressions: this is one fantastic sounding dongle! I don't think the question or debate is to whether buy the RU6 or the W1/W2. The debate should be which one to buy first...

No EMI so far for me. I am using the Cayin lightning cable.

@MusicTeck had the unit to my door remarkably fast. Thanks, Andy!

Using iPhone 13 Pro and Apple Music

edit: spelling
 
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Mar 3, 2022 at 5:07 PM Post #2,159 of 3,686
Received my RU6 today. I have only been able to use it a short while. Initial impressions: this is one fantastic sounding dongle! I don't think the question or debate is to whether buy the RU6 or the W1/W2. The debate should be which one to buy first...

No EMI so far for me. I am using the Cayin lightining cable.

@MusicTeck had the unit to my door remarkably fast. Thanks, Andy!

Using iPhone 13 Pro and Apple Music
Which phone or iem?
 
Mar 3, 2022 at 5:28 PM Post #2,160 of 3,686
Which phone or iem?
iPhone 13 Pro and SeeAudio Bravery. I will test other IEMs later. I am initially finding that I prefer the OS mode for the RU6. Sweet but detailed. The NOS mode sounds rather jagged, at least initially, to my ears.

What is recommended burn-in period for the RU6?

After a few hours: the RU6 pairs sublimely with the Bravery. Wonderful synergy with the two. Single ended stock cable.

Power consumption from my iPhone is fairly significant. Anecdotally, more than L&P W1, certainly more than Paw S1.
 
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