[SubMash]

I broke 11 years of silence. Totally worth it.

 

[wslee]

Edit: I probably was reading wrong documentation - https://www.head-fi.org/threads/radsone-earstudio.867366/page-75#post-14237690

So I just found that pretty much all balanced 2.5mm connectors made as L-,L+,R+,R- while EarStudio is


So unless one specifically requested connection as above - it will be out of phase.
Standard Shure and Sennheiser balanced cables are going to be wrong.
Test it here - https://www.audiocheck.net/audiotests_polaritycheck.php or better use any multimeter and check where your grounds are.

You're referring the block diagram which introduces the DualDrive technology.

The 2.5mm jack 4-pin layout of ES100 is same as all what Astell & Kern devices have. (de facto standard)
No difference at all.

 

[kevinscottcaja]

Well it seems no one is selling here in Hong Kong some short 2.5mm balanced MMCX cables so I bought a cheap SPC cable (17USD) and two 2.5mm TRRS jack (2USD each) from a local audio shop and will just make my own short balanced MMCX cable.

 

[wslee]

What you show is the Astell & Kern 2.5mm TRRS Standard wiring. So, looks like Radsone ES100 is using that standard.

FYI, the following DAP's use that same 2.5mm wiring for their 2.5mm Balanced output jacks: A&K players with a balanced 2.5mm output, Fiio X5 3rd Gen, X7 (with AM3), Onkyo DP-X1, Pioneer XDP-300R, Cayin N5, The Bit Opus #1 DAC, Luxury and Precision L3 DAC; ( and probably a lot of other newer devices with a balanced 2.5mm output )

Thanks for the comment,
As you noted, ES100 2.5mm pinout is same as all the Astell & Kern devices, which is de facto standard.
Regards,
WS

 

[m4rkw]

I temp disabled Norton and the firmware installed fine. Should I be worried?

Yes, Norton Antivirus is malware. I'd get rid of it.

 

[Koolpep]

Hi Guys!

Just received my ES100 - love it. Nice device indeed. Need to play around with the settings though....

However - the clip and the mic - for normal man's shirts that that have the buttons on the right and the buttonholes on the left - this doesn't work. The mic is facing the floor when clipped in a normal dress shirt...
Not sure if that has ever been mentioned before...I am sure I am not the only one who would like the clip to be mounted on the other side.... hmmmm

 

[peter123]

Hi Guys!

Just received my ES100 - love it. Nice device indeed. Need to play around with the settings though....

However - the clip and the mic - for normal man's shirts that that have the buttons on the right and the buttonholes on the left - this doesn't work. The mic is facing the floor when clipped in a normal dress shirt...
Not sure if that has ever been mentioned before...I am sure I am not the only one who would like the clip to be mounted on the other side.... hmmmm

You're right, I've noticed the same but I believe I forgot to mention it here.

Even with the mic facing down people have no problem hearing what I'm saying though but ideally the clip should be the other way..

 

[SubMash]

Not sure if that has ever been mentioned before...I am sure I am not the only one who would like the clip to be mounted on the other side.... hmmmm

You can clip it on the inner part of a shirt - it's more stealth this way as well...

 

[kevinscottcaja]

my DIY short balanced cable is done. Tried my friend's XB10 and sounds great. Waiting for my ES100 to arrive.

 

[manukmanohar]

Hi Guys, I have finally ordered the ES100, and hope to receive it soon. Had a question:
I'm primarily having earphones with mmcx connection.From what i understand, balanced not only can provide less interference compared to SE, it can also double the power, which can help for IEM's that are less sensitive.

I assume then that I have to look for a 2.5 mm MMCX balanced cable (custom 40 -50 cm would require contacting VEClan, or making one myself)? And in case I want to use it with phones and need a converted, is there a cheap option available (I read in the thread, that a non-trrs supporting standard 2.5 female to 3.5 mm male would damage the IEM).
So what to do if I want to connect to smartphones that would not support balanced? (and want to use the same cable).

 

[peter123]

Hi Guys, I have finally ordered the ES100, and hope to receive it soon. Had a question:
I'm primarily having earphones with mmcx connection.From what i understand, balanced not only can provide less interference compared to SE, it can also double the power, which can help for IEM's that are less sensitive.

I assume then that I have to look for a 2.5 mm MMCX balanced cable (custom 40 -50 cm would require contacting VEClan, or making one myself)? And in case I want to use it with phones and need a converted, is there a cheap option available (I read in the thread, that a non-trrs supporting standard 2.5 female to 3.5 mm male would damage the IEM).
So what to do if I want to connect to smartphones that would not support balanced? (and want to use the same cable).

VE have some good adapters for $5 and FiiO have a nice one for $13. I've gör bot and the FiiO one may feel a little bit higher quality but they both work equally well.

 

[manukmanohar]

VE have some good adapters for $5 and FiiO have a nice one for $13. I've gör bot and the FiiO one may feel a little bit higher quality but they both work equally well.

i see that option here:
https://www.veclan.com/engappliance_sel_one?eng_ApplianceVo.eac_id=17

I should select 2.5 mm TRRS female to 3.5 mm SE male, if I want to use it to connect to smartphones and hear both channel right?

 

[waynes world]

my DIY short balanced cable is done. Tried my friend's XB10 and sounds great. Waiting for my ES100 to arrive.

Nice job! Mind giving it to me?

 

[chinmie]

My friend tested my ES100, he has the XB10 JDM version. After listening to it, he asked me if i want to sell my ES100 to him. Now that says something

 

[wslee]

For most IEMs, I guess the 3.5mm max. 1.1 Vrms would give enough loudness.
The key benefits of the full-balanced system are the common mode noise rejection and the freedom from ground noise.

Let assume that:

L_AMP_out_p = L_p + Amp_noise
L_AMP_out_n = L_n + Amp_noise
GND = Zero + GND_noise

Ideally, Amp_noise and GND_noise should be zero, but practically they are not zero.
And both Amp_noises to L_AMP_out_p(positive) and L_AMP_out_n(negative), they are practically same; common mode noise.

So, the signal at the load, that is IEM unit, would be:

V_load_unbalanced
= L_AMP_out_p - GND
= (L_p + Amp_noise) - (Zero + GND_noise)

V_load_balanced
= L_AMP_out_p - L_AMP_out_n
= (L_p + Amp_noise) - (L_n + Amp_noise)
= L_p - L_n
= 2 x L_p

As you see above, V_load_unbalanced has Amp_noise as well as GND_noise,
while V_load_balanced has the pure output signal without any common mode Amp_noise and GND_noise.

Not only with ES100, but also with any given H/W, supporting both balanced and unbalanced,
the balanced would provide the better performance, regarding THD+N, SNR, and channel separation.
That is the primary advantage of the full balanced interface.

For your information,
as we collect user data from ES100 mobile application,
roughly 25~30% of ES100 users are using the 2.5mm balanced interface.

Thanks and Regards,
WS