Cayin RU6: R-2R USB Dongle DAC with Head-Amp
Oct 19, 2022 at 8:15 AM Post #2,881 of 3,685
I plugged Acoustune HS1677ss to RU6, another fantastic matching!
So happy to chose it, but i'd test M15 also
 
Oct 19, 2022 at 11:43 AM Post #2,882 of 3,685
Hi just pulled the trigger on a RU6. Was just wondering if I can use the 3.5mm or 4.4mm out as a DAC to my darkvoice from windows? Anxious to try the combo of R2R and tubes.
I am not sure about using the balanced out 4.4mm to RCA input to another amplifier. Won’t this ground the two negative sides of the balanced out circuit? Is this harmful?
 
Oct 19, 2022 at 11:46 AM Post #2,883 of 3,685
I am not sure about using the balanced out 4.4mm to RCA input to another amplifier. Won’t this ground the two negative sides of the balanced out circuit? Is this harmful?
Good point. I am not sure so someone else with the knowledge please chime in! At the moment I am connecting the RU6 to my Aroma A100TB via a 4.4mm to 4.4mm cable. The A100TB has a 4.4mm input.
 
Oct 19, 2022 at 12:58 PM Post #2,884 of 3,685
It was suggested by Andy Kong to not connect RU6 to an external amp via the 4.4mm output of the Cayin as this only emphasises the distortion/interference/noise caused by the heat from the ladder of resistors.
 
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Oct 19, 2022 at 10:47 PM Post #2,886 of 3,685
Hi just pulled the trigger on a RU6. Was just wondering if I can use the 3.5mm or 4.4mm out as a DAC to my darkvoice from windows? Anxious to try the combo of R2R and tubes.
3.5mm, Darkvoice only support single ended input, you can use a 4.4mm to RCA converter, but it is considered bit risky as can potentially damage the DAC, single ended to balanced conversion is considered fine.
 
Oct 22, 2022 at 3:39 AM Post #2,888 of 3,685
can confirm the pc volume adjustment works on linux (elementary OS) but not windows.
On my iPad Pro, USB-C out, the iPad volume control has no effect other than full mute.
 
Oct 22, 2022 at 2:10 PM Post #2,890 of 3,685
Could I connect this to a cheap dap if I wanted Bluetooth functionality out of it?

Get Hiby R2, about $100, and that little dap has 2-way BT and wifi with built in Tidal and Qobuz native apps.
 
Oct 23, 2022 at 8:05 AM Post #2,892 of 3,685
I believe you can but there will be double amping since it is not a true line out. You can use either the single ended or balanced but the advice is to use single ended and to keep the volume at max 70 (this was mentioned somewhere and could be arbitrary but I have tried it without any no issues).
It's a fairly moot point, as both a DAC and dongle DACs both use opamps for output/amplification. The difference is usually that a DAC/amp will have a second opamp/amp stage to increase the current output. Given that the input impedance of an amp will be extremely high, this wont matter.
I am not sure about using the balanced out 4.4mm to RCA input to another amplifier. Won’t this ground the two negative sides of the balanced out circuit? Is this harmful?
Indeed, use the single-ended 3.5mm output using a 3.5mm to RCA converter cable. That has the most direct output from the DAC anyway.
I just got my RU6. I absolutely love it. I'm hoping to tap into the headfi brain trust for some help. I want to use the RU6 as a DAC with my Cavalli liquid platinum amp. What is the best volume level to use if I am using the SE out to a line level input?
The answer is buried in one of Andy's posts I think. Usually, you might want to set the volume of the RU6 to minimum, and the Cavalli to max to bypass the Cavalli's volume control. But, if you hear hiss doing that with no music playing, then go the opposite way. Also, if you hear distortion, then the output of the RU6 is too high for the amp and again, you should set it lower and use the volume control of the amp.
 
Oct 24, 2022 at 9:48 PM Post #2,893 of 3,685
I connected the RU6 to my Topping A90D, found the volume to be quite low, on RU6 Low Gain, NOS, 85 vol, 3.5mm out (to RCA in A90D), on A90D side, XLR HP out, High Gain, using my HD6xx I need to go upto 75 volume on the A90D to be just ok listening level, using my D90 I need to be about 55 volume on my A90D to achieve same loudness level.
 
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Oct 25, 2022 at 10:14 PM Post #2,894 of 3,685
hey guys, anyone know how to reduce or eliminate the cell phone noise with ru6? I'm using Samsung s10 plus phone and notice it happens a lot. I'm using stock cable and ru6 with the leather case
Try this ..worked for me. Got it from Amazon. Also provides subtle sound enhancement

GUCraftsman USB C Type C to Type C Headphone Amplifier Cable 6N Single Crystal Silver for FiiO BTR5 Q1 Q3 Q3s Qudelix 5K xDuoo Link2 XD-05PLUS E1DA 9038G3 9038S 9038D Lotoo PAW S2¡ https://a.co/d/gTpseA8
 
Oct 26, 2022 at 10:01 AM Post #2,895 of 3,685
Try this ..worked for me. Got it from Amazon. Also provides subtle sound enhancement

GUCraftsman USB C Type C to Type C Headphone Amplifier Cable 6N Single Crystal Silver for FiiO BTR5 Q1 Q3 Q3s Qudelix 5K xDuoo Link2 XD-05PLUS E1DA 9038G3 9038S 9038D Lotoo PAW S2¡ https://a.co/d/gTpseA8
thanks but import to Canada makes it almost double in price. I'll see if I can find this elsewhere
 

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