General results
- Output Impedance: 0.44 ohm
Characteristics for the high quality mode
- Power and voltage for 32 ohm : 5.52 mW/ / -7.5 dBV
- Power and voltage for 300 ohm : 51.78 mW/ / 11.9 dBV
- Recommended Headphones
- In-Ear or Tablet headphones: 14 - 1007 ohm
- Over-ear headphones: 281 - 315 ohm
Maximum
- Power and voltage for 32 ohm : 211.24 mW/ / 8.3 dBV
- Power and voltage for 300 ohm : 103.60 mW/ / 14.9 dBV
- Recommended Headphones
- In-Ear or Tablet headphones: 8 - 1007 ohm
- Over-ear headphones: 8 - 635 ohm
About quality modes
We make borders for the maximum characteristics for current and voltage by sound signal reproduction quality levels. In general, when the volume level is increased, the sound quality of the amplifier degrade. Approximately as a car above a certain speed becomes less manageable. High-quality mode is a mode in which it is considered that the amplifier works as clear as possible without distortion and corresponds to the equivalent class A
. As a car at speed with excellent manageability.
The maximum mode is a mode in which it is considered that the amplifier operates without an audible wheeze from overloading (clipping) or this is the maximum position of the volume control and a higher volume level is not possible. As if the car has already reached a speed above which manageability is lost or the car can not reach a higher speed.
Recommended headphone impedances are determined for in-headphones with a sensitivity of 112 dB / mW SPL and full-sized 99 dB / mW SPL while providing a maximum sound pressure level of 116 dB SPL (average sound pressure level will be 9 dB less, since the music track is usually contains not only loud parts, but also quiet ones).
. As a car at speed with excellent manageability.
The maximum mode
is a mode in which it is considered that the amplifier operates without an audible wheeze from overloading (clipping) or this is the maximum position of the volume control and a higher volume level is not possible. As if the car has already reached a speed above which manageability is lost or the car can not reach a higher speed.
Recommended headphone impedances are determined for in-headphones with a sensitivity of 112 dB / mW SPL and full-sized 99 dB / mW SPL while providing a maximum sound pressure level of 116 dB SPL (average sound pressure level will be 9 dB less, since the music track is usually contains not only loud parts, but also quiet ones).
About a simple report
This is a simply report for dummies who are poorly versed in the characteristics of the amp part of various devices and don’t understand specialized graphs.
Information in this report is presented in simple and clear form. Data interpretation were made as simple as possible and accordingly hadn’t much subtleties and nuances. Simple report is sufficient for a general assessment of the device. For more complete and accurate assessment you should read professional report.
All characteristics are accompanied by detailed explanations to enable reader to gradually understand dependencies between the characteristics. The aim is to give you ability to understand a more complex professional report.
For example, when choose new computer video card, many persons do not understand the set of tables with the final data of the test packages of video cards. How to understand the relative difference in these figures? In most cases, the unprepared reader is satisfied with only the textual evaluation of the author, without delving into the figures. When the choice of a product is done thoroughly and consciously, then the reader gradually deepens into complex tables, mastering information from simple to complex.
We made the separation of reports into "simple" and "complex", where a simple report with explanations will allow you to gradually understand and professional report.
Information in this report is presented in simple and clear form. Data interpretation were made as simple as possible and accordingly hadn’t much subtleties and nuances. Simple report is sufficient for a general assessment of the device. For more complete and accurate assessment you should read professional report.
All characteristics are accompanied by detailed explanations to enable reader to gradually understand dependencies between the characteristics. The aim is to give you ability to understand a more complex professional report.
For example, when choose new computer video card, many persons do not understand the set of tables with the final data of the test packages of video cards. How to understand the relative difference in these figures? In most cases, the unprepared reader is satisfied with only the textual evaluation of the author, without delving into the figures. When the choice of a product is done thoroughly and consciously, then the reader gradually deepens into complex tables, mastering information from simple to complex.
We made the separation of reports into "simple" and "complex", where a simple report with explanations will allow you to gradually understand and professional report.
More detailed
Measurements of Topping NX4 were carried out by Roman Kuznetsov on the hardware-software complex RAA.
The Topping NX4 test was conducted as a black box test, without regard to cost and prestige. This is the basic principle for making measurements, measurement reports and developing tests in RAA.
I believe that it is important to do not make an absolute assessment of the device, but an aggregate assessment when working together with a headphones and taking into account external factors. This allows you to effectively reveal the potential of the entire set of devices or to make a more optimal choice of components.
Kuznetsov Roman
Founder of RAA
Information for Authors. You can freely use the graphics in your articles with a link to us.
it is a translation from the Russian language. Original text in Russian page.
You can help us with the correct translation into English.
