Violectric V222 vs Topping L70 vs Singxer SA-1 V2 for IEM use

[antcollinet]

We're talking every next touch slipping 5-8mV since the last reading.

Do I understand correctly : Take a measurement, measure the same thing again straight away, and get up to 8mv difference in the readings?

 

[Sokel]

Do I understand correctly : Take a measurement, measure the same thing again straight away, and get up to 8mv difference in the readings?

Exactly that.
To signal about 100mV.

 

[Sokel]

I quote Fluke's website:

The accuracy of a specific digital multimeter is important, depending on the application. For example, most AC power line voltages can vary ±5% or more. An example of this variation is a voltage measurement taken at a standard 115 V AC receptacle. If a digital multimeter is only used to check if a receptacle is energized, a digital multimeter with a ±3% measurement accuracy is appropriate.

Some applications, such as calibration of automotive, medical aviation or specialized industrial equipment, may require higher accuracy. A reading of 100.0 V on a digital multimeter with an accuracy of ±2% can range from 98.0 V to 102.0 V. This may be fine for some applications, but unacceptable for more sensitive electronic equipment.

Accuracy may also include a specified amount of digits (counts) added to the basic accuracy rating. For example, an accuracy of ±(2%+2) means that a reading of 100.0 V on the multimeter can be from 97.8 V to 102.2 V. Use of a digital multimeter with higher accuracy allows for a great number of applications.

Basic dc accuracy of Fluke handheld digital multimeters ranges from 0.5% to 0.025%

Now imagine the cheapos.

Edit:Here's the tolerances of the nice one I have (Extech ex520,I got the specific cause I'm a cannibal and it's somehow more durable)



Still borderline to the task and true RMS only up to 1kHz,despite it's not dirt cheap one.

 

[kemmler3D]

I want to say 8mV might be audible on an IEM...

 

[Sokel]

I want to say 8mV might be audible on an IEM...

8mV is the equivalent of attenuating a 1.6V sine by about 45dB.
It can sure be audible.

 

[Pictus]

I'll have my wife switch things for a double blind, soon.

Last night I played a bunch of hi-res stuff that has huge soundstage, such as Yello. Again, the Topping was wider and deeper. Percussion and other ambient sounds seemed to be almost behind me with the Topping. The SMSL (jumper mod now) was a little brighter I feel and improved, but did not have that depth. It was easy to go back and forth many times. The Topping was deeper and wider. However, it was not as mid forward and almost as if it had a slight mid scoop. Both excellent. I feel the SMSL was a little more natural and the quality of the treble may have been better, but the width and depth of the Topping is noticeable. Kind of like open back versus closed back headphones.

SMSL? I guess you mean Singxer SA-1 V2.

 

[raif71]

Hmm, I was thinking of buying Violectric V202 but with your preference to Topping L70 over the V222, I'm not certain on the Violectric now. I have the Topping L50 and Singxer SA-1 1st version and prefer the Singxer more. The L50 is ok but nothing to shout about.