Cayin RU7: 1-Bit Resistor Network Dongle DAC /Amp

[staymetal]

I personally find RU7 a good pair for orchestral and jazz music it perfectly creates an atmospheric ambience-like soundstage. We are slightly getting off the subject here , but yes Mojo is on the make of a new portable DAC .

 

[fattycheesebeef]

I tried the RU7 today and it's pretty impressive. I used to have RU6 but had some interference issue with my iPhone and sold it. I agree that it's somewhat like Mojo 2 but the vocals are surreal and separation is slightly better.

 

[BBHT]

I tried the RU7 today and it's pretty impressive. I used to have RU6 but had some interference issue with my iPhone and sold it. I agree that it's somewhat like Mojo 2 but the vocals are surreal and separation is slightly better.

Got my RU7 as a box opened hefty discount. I find it really responds to decent filtered separate power where the mojo2 most critically likes a high quality transport to perform it's best. And one with the right character by example my shanling m1s is a bit too dynamic and presents a heavy sub base and treble you could take down bats with. Where the hiby m300 offers a more reserved treble and upper bass focus which gives the slightly light mojo2 signature more weight. But neither minus being tweaked out is exactly a bad listen

 

[originalsnuffy]

Here is what I don't like about the RU7. It leaves me nothing to complain about.

 

[BBHT]

Here is what I don't like about the RU7. It leaves me nothing to complain about.

Occasionally there's a track it won't play without drop outs and glitches but we're talking about 1 in 1500

 

[staymetal]

I have paired Cayin RU7 with a Topping L30 II unbalanced amplifier through the 3.5 to double RCA in Lineout Mode . I would really want to use to 4.4 mm balanced in Lineout Mode , but what balanced desktop amp would be better to pair it with ? I know that Cayin RU7 in 4.4mm lineout comes at 2.4 Vrms and balanced amps sensitivity is 4 Vrms . Wouldn't that cause a problem ?

 

[Brain Damage]

I have paired Cayin RU7 with a Topping L30 II unbalanced amplifier through the 3.5 to double RCA in Lineout Mode . I would really want to use to 4.4 mm balanced in Lineout Mode , but what balanced desktop amp would be better to pair it with ? I know that Cayin RU7 in 4.4mm lineout comes at 2.4 Vrms and balanced amps sensitivity is 4 Vrms . Wouldn't that cause a problem ?

You could use the ifi ZenCAN which has a 4.4 input, so all you would need is a 4.4 to 4.4 cable. Although this is not the best solution (due to the input sensitivity of ifi ZenCAN sitting at 5.1V), it does yield good results and is a good little setup considering price-to-performance.
Generally, you would be better looking for a balanced amp with a 4V input sensitivity (e.g. Singxer SA-1, Topping A90, or Schiit Jotunheim 2) as this will match better and you'll get better dynamic range with these. You will inevitably not require the volume potentiometer to be as high as with the ZenCAN in this set up.

 

[shimigg]

What could be the way to connect to the RU7 with a mobile phone but keep the phone charged with long enough cable so i can use the phone in that time. got the CB19 but it is too short and meant to power the dongle and not supply the phone power.

 

[DBaldock9]

What could be the way to connect to the RU7 with a mobile phone but keep the phone charged with long enough cable so i can use the phone in that time. got the CB19 but it is too short and meant to power the dongle and not supply the phone power.

Does the USB-C spec support a phone receiving power from a charger, and simultaneously supplying power to a dongle (that doesn't have an internal battery)?
The issue I can foresee is that the data lines are needed between the phone & dongle for audio - and they may also be needed between the phone & charger, to negotiate and control the charging power.

 

[sofastreamer]

I personally find RU7 a good pair for orchestral and jazz music it perfectly creates an atmospheric ambience-like soundstage. We are slightly getting off the subject here , but yes Mojo is on the make of a new portable DAC .

interesting. to me it feels, like about 50% of the statements i am reading, tell the ru7 soundstage is totally 2d with zero depth and very intimate, while the other 50% tell that it is atmopheric, holographic, lifelike.

i wonder what each sides compared it to.

 

[BBHT]

I tend to think a less than ideal source signal feathers out layering to the extremes of left and right pan particularly on iem's
While a more focused and resolving signal can draw out the perception of depth along a tangible present center axis.

I don't use phones but if I use my Poco X6 pro I sense a diffusion to the sound and depth takes on a kind of smeary back shelf by example.

So maybe it's just a case of if you are ringing the last drop of talent out the RU7 or not.

 

[staymetal]

interesting. to me it feels, like about 50% of the statements i am reading, tell the ru7 soundstage is totally 2d with zero depth and very intimate, while the other 50% tell that it is atmopheric, holographic, lifelike.

i wonder what each sides compared it to.

that is totally wrong to say Cayin RU7 does not have depth . I own plenty of DACs to tell you from personal experience right now that these are lies . Cayin RU7 is very holographic and emotional , the stage is GRAND!!! but of course you need a headphone or IEM that is capable also in projecting that holographic soundstage . I personally paired it with Hidizs MP145 , HiFiMan Sundara and recently tried it with Edition XS in combination with a desktop amp and the results were phenomenal for the price .

What I would personally call an intimate to average sized soundstage which IS flat and non holographic a good example is SMSL SU-1 .

What I would personally call an intimate to average sized soundstage that is NOT flat and that is it well holographic an example is HiBy FC6.

 

[kalibri]

interesting. to me it feels, like about 50% of the statements i am reading, tell the ru7 soundstage is totally 2d with zero depth and very intimate, while the other 50% tell that it is atmopheric, holographic, lifelike.

IMO the soundstage depends 99.999% on the headphone or IEM, and not on the DAC.
Looking for such qualities in DACs and AMPs is very close to looking for the same qualities in cables, mostly bogus.

 

[staymetal]

IMO the soundstage depends 99.999% on the headphone or IEM, and not on the DAC.
Looking for such qualities in DACs and AMPs is very close to looking for the same qualities in cables, mostly bogus.

I can tell the difference between using different DACs on the same IEM and headphone and I do not agree that it is 99.999% on the IEM or the headphone . Both play their role in the sound signature , the source and the transducer .
Using Hiby FC6 , Cayin RU7 and SMSL SU-1 as an example on the exact same headphone and IEM , the differences are evident . Especially the soundstage , when switching from Cayin RU7 to SMSL SU-1 where SMSL is flat!! No depth at all nice average sized but flat . Timbre wise and treble extension when using the exact transducers from HiBy FC6 to SMSL SU-1 the changes are immediate on how organic and natural guitar nylon and wind instruments are on FC6 and how unrefined perhaps that would not be a good word to describe on SMSL SU-1 perhaps its better to use the word artificial . Not to mention how airy the treble is on the SMSL unlike the smoothness of FC6 or the smoothness of RU7 on 64 DSD mode enabled.

 

[sofastreamer]

IMO the soundstage depends 99.999% on the headphone or IEM, and not on the DAC.
Looking for such qualities in DACs and AMPs is very close to looking for the same qualities in cables, mostly bogus.

to me its more like 90% but yeah, for sure, transducers are the most important. anyway there are very audible differences in sources regarding spatial cues