Measurement's report Nu Force uDAC - Reference Audio Analyzer

Reports / Nu Force / uDAC / A set of device tests as a headphone amplifier - report for a pro

Test report Nu Force uDAC (report for a pro)

About this report
This is a report for professionals with a suite of test of headphone amplifier.
You can see a simple report for "dummies" with explanations of the main characteristics for Nu Force uDAC

A suite of tests for a headphone amplifier can be applied to just a universal output without a formal presence of an amplifier, if in this mode you can connect headphones to this output. Based on the results of the tests, you can understand the real picture, is the output powerful enough or not, with the initial data on the circuitry as a "black box".

Test report - general data Nu Force uDAC (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

Your browser does not support Canvas

Voltage levels from the load at the output of the amplifier

Your browser does not support Canvas

Average value of impedance band in 40 Hz - 15 kHz5.6ohm
Voltage:
Pure or equal class A / Maximum or before clipping level
-9.3/4.7dBV
0.3/1.7VRMS
Current:
Pure or equal class A / Maximum or before clipping level
1.4/30.6dB(mA)
1.2/33.8mA






Frequency response Nu Force uDAC (as headphone amplifier)

Your browser does not support Canvas
Graphics setting view
Channel

Range

Channel:LeftRight
Variation in frequency response in band from 40 Hz - 15 kHz -0.1, +0.0-0.1, +0.0dB


Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Impedance Nu Force uDAC (as headphone amplifier)

Your browser does not support Canvas
Graphics setting view
Channel

Channel:LeftRight
Impedance average in band from 40 Hz - 15 kHz5.7 5.6ohm
The minimum value in band from 40 Hz - 15 kHz5.7 5.6ohm
The maximum value in band from 40 Hz - 15 kHz5.7 5.6ohm


Comparison of basic characteristics AMPs

Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Crosstalk Nu Force uDAC (as headphone amplifier)

Your browser does not support Canvas
Graphics setting view
Channel

Range

Load

Channel:LeftRight
Crosstalk @ 1 kHz @ 15.8 ohm -58.7 -58.5dB
Crosstalk @ 1 kHz @ 24.5 ohm -61.1 -60.8dB
Crosstalk @ 1 kHz @ 30.5 ohm -62.5 -61.4dB
Crosstalk @ 1 kHz @ 62.4 ohm -67.9 -67.2dB
Crosstalk @ 1 kHz @ 100.0 ohm -71.5 -70.9dB
Crosstalk @ 1 kHz @ 198.9 ohm -75.9 -74.9dB
Crosstalk @ 1 kHz @ 300.0 ohm -78.2 -76.8dB
Crosstalk @ 1 kHz @ 763.0 ohm -82.4 -80.2dB
Crosstalk @ 1 kHz @ Not loaded-85.2 -83.6dB


Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Crosstalk Phase Nu Force uDAC (as headphone amplifier)

Your browser does not support Canvas
Graphics setting view
Channel

Load



Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Frequency response Nu Force uDAC with resistive load

Your browser does not support Canvas
Graphics setting view
Channel

Range

Frequency response of amplifier with resistive load @ 40 Hz - 15 kHz
Channel:LeftRight
HP 16 Ω + Nu Force uDAC 0.00.0dB
HP 32 Ω + Nu Force uDAC 0.00.0dB
HP 64 Ω + Nu Force uDAC 0.00.0dB
HP 126 Ω + Nu Force uDAC 0.00.0dB
HP 256 Ω + Nu Force uDAC 0.00.0dB
HP 512 Ω + Nu Force uDAC 0.00.0dB


Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Frequency response Nu Force uDAC loaded dynamic headphone type

Your browser does not support Canvas
Graphics setting view
Channel

Range

Frequency response of amplifier loaded dynamic headphone type @ 40 Hz - 15 kHz
Channel:LeftRight
HP 10000 Ω + Nu Force uDAC 0.00.0dB
Grado GH4 Limited Edition + Nu Force uDAC 0.90.9dB


Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Frequency response Nu Force uDAC loaded type balance armature headphone type

Your browser does not support Canvas
Graphics setting view
Channel

Range

Frequency response of amplifier loaded type balance armature headphone type @ 40 Hz - 15 kHz
Channel:LeftRight
HP 10000 Ω + Nu Force uDAC 0.00.0dB
Campfire Audio Andromeda + Nu Force uDAC 6.36.3dB
Fearless Audio S8F Freedom + Nu Force uDAC 5.14.7dB


Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



THD vs load vs output voltage Nu Force uDAC

Your browser does not support Canvas
Graphics setting view
Channel

Load

Harmonic, number

Your browser does not support Canvas
Graphics setting view
Channel

Load

Harmonic, number

Your browser does not support Canvas
Graphics setting view
Channel

Load

Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Maximum voltage output level vs load Nu Force uDAC

Your browser does not support Canvas
Graphics setting view
Type of chart

RAW coordinates

Power characteristics of the Voltage Current
dBVVRMSdB(mA)mA
Equivalent class A -9.30.31.41.2
Equivalent class AB -3.30.77.62.4
Equivalent class B 1.71.212.44.2
Maximum mode 4.71.730.633.8


Volume Control TypeAnalog
Optimal range of volume control36.0dB


Comparison Nu Force uDAC and another amplifiers by loudness (Volume Level)

Main characteristics of the Nu Force uDAC

Brief information

Clicking on the graph will take you to the comparison page of different headphone models with advanced graph display settings.



Maximum voltage output level vs load Nu Force uDAC

Your browser does not support Canvas