Measurement's report ASUS ROG Strix Fusion 700 USB - Reference Audio Analyzer

ASUS ROG Strix Fusion 700

USB
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 ASUS ROG Strix Fusion 700 USB

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".

Line-out, differences from the output for headphones and speakers

Advantages and disadvantages of balanced amplifiers

Test report - general data ASUS ROG Strix Fusion 700 (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

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Voltage levels from the load at the output of the amplifier

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Average value of impedance band in 40 Hz - 15 kHz0.8ohm
Voltage:
Linear Mode / Maximum or before clipping level
-7.0/-7.0dBV
0.4/0.4VRMS
Current:
Linear Mode / Maximum or before clipping level
16.7/28.6dB(mA)
6.8/27.0mA





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Frequency response ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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Range

Channel:LeftRight
Variation in frequency response in band from 40 Hz - 15 kHz -4.2, +4.1-4.2, +4.1dB



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On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



Impedance ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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Channel:LeftRight
Impedance average in band from 40 Hz - 15 kHz0.6 1.0ohm
The minimum value in band from 40 Hz - 15 kHz0.6 0.9ohm
The maximum value in band from 40 Hz - 15 kHz0.7 1.3ohm


Comparison of basic characteristics AMPs


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Crosstalk ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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Channel

Range

Load

Channel:LeftRight
Crosstalk @ 1 kHz @ 15.8 ohm -37.7 -37.7dB
Crosstalk @ 1 kHz @ 24.5 ohm -41.1 -41.1dB
Crosstalk @ 1 kHz @ 30.5 ohm -43.1 -43.1dB
Crosstalk @ 1 kHz @ 62.4 ohm -49.3 -49.3dB
Crosstalk @ 1 kHz @ 100.0 ohm -53.2 -53.3dB
Crosstalk @ 1 kHz @ 198.9 ohm -59.1 -59.2dB
Crosstalk @ 1 kHz @ 300.0 ohm -62.6 -62.6dB
Crosstalk @ 1 kHz @ 763.0 ohm -70.6 -70.4dB
Crosstalk @ 1 kHz @ Not loaded-89.2 -89.8dB



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Crosstalk Phase ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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Load




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Frequency response ASUS ROG Strix Fusion 700 USB with resistive load

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Range

Frequency response of amplifier with resistive load @ 40 Hz - 15 kHz
Channel:LeftRight
TEST 16 ? + ASUS ROG Strix Fusion 700 USB 0.00.2dB
TEST 32 ? + ASUS ROG Strix Fusion 700 USB 0.00.1dB
TEST 64 ? + ASUS ROG Strix Fusion 700 USB 0.00.1dB
TEST 126 ? + ASUS ROG Strix Fusion 700 USB 0.00.0dB
TEST 256 ? + ASUS ROG Strix Fusion 700 USB 0.00.0dB
TEST 512 ? + ASUS ROG Strix Fusion 700 USB 0.00.0dB



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On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



Frequency response ASUS ROG Strix Fusion 700 USB loaded dynamic headphone type

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Range

Frequency response of amplifier loaded dynamic headphone type @ 40 Hz - 15 kHz
Channel:LeftRight
TEST 10000 ? + ASUS ROG Strix Fusion 700 USB 0.00.0dB
Grado GH4 Limited Edition + ASUS ROG Strix Fusion 700 USB 0.10.2dB



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On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



Frequency response ASUS ROG Strix Fusion 700 USB loaded type balance armature headphone type

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Channel

Range

Frequency response of amplifier loaded type balance armature headphone type @ 40 Hz - 15 kHz
Channel:LeftRight
TEST 10000 ? + ASUS ROG Strix Fusion 700 USB 0.00.0dB
Campfire Audio Andromeda + ASUS ROG Strix Fusion 700 USB 1.21.6dB
Fearless Audio S8F Freedom + ASUS ROG Strix Fusion 700 USB 0.91.2dB



Brief information

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On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



THD vs load vs output voltage ASUS ROG Strix Fusion 700 USB

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Channel

Load

Harmonic, number

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Load

Harmonic, number

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Load


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Maximum voltage output level vs load ASUS ROG Strix Fusion 700 USB

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Power characteristics of the Voltage Current
dBVVRMSdB(mA)mA
Equivalent class A -7.00.416.76.8
Equivalent class AB -7.00.428.627.0
Equivalent class B -7.00.428.627.0
Maximum mode -7.00.428.627.0


Volume Control TypeDigital
Optimal range of volume control0.0dB
Signal/Noise / Maximum70.0/-7.0dB/dBV
Signal/Noise @ -14.9 dBV 32 ohm (1 mW)62.22dB
Signal/Noise @ -5.2 dBV 300 ohm (1 mW)LowdB


Comparison ASUS ROG Strix Fusion 700 USB and another amplifiers by loudness (Volume Level)

Main characteristics of the ASUS ROG Strix Fusion 700 USB


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Maximum voltage output level vs load ASUS ROG Strix Fusion 700 USB

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Maximum Amplifier Voltage Level
Load Pure or equal class AOptimal or equal class ABHard or equal class BMax, before clipping
dBVVRMSdBVVRMSdBVVRMSdBVVRMS
15.8 ohm -19.40.1-7.40.1-7.40.1-7.40.1
24.5 ohm -16.30.2-7.20.2-7.20.2-7.20.2
30.5 ohm -13.20.2-7.20.2-7.20.2-7.20.2
62.4 ohm -7.10.4-7.10.4-7.10.4-7.10.4
100 ohm -7.00.4-7.00.4-7.00.4-7.00.4
198.9 ohm -7.00.4-7.00.4-7.00.4-7.00.4
300 ohm -7.00.4-7.00.4-7.00.4-7.00.4
763 ohm -7.00.4-7.00.4-7.00.4-7.00.4
Not loaded-7.00.4-7.00.4-7.00.4-7.00.4



Maximum level of amplifier current
Load Pure or equal class AOptimal or equal class ABHard or equal class BMax, before clipping
dB(mA)mAdB(mA)mAdB(mA)mAdB(mA)mA
15.8 ohm 16.66.828.627.028.627.028.627.0
24.5 ohm 16.06.325.017.725.017.725.017.7
30.5 ohm 17.17.223.114.323.114.323.114.3
62.4 ohm 17.07.117.07.117.07.117.07.1
100 ohm 13.04.513.04.513.04.513.04.5
198.9 ohm 7.12.37.12.37.12.37.12.3
300 ohm 3.51.53.51.53.51.53.51.5
763 ohm -4.60.6-4.60.6-4.60.6-4.60.6


Power
Load Pure or equal class AOptimal or equal class ABHard or equal class BMax, before clipping
dBmmWdBmmWdBmmWdBmmW
15.8 ohm -1.40.710.611.510.611.510.611.5
24.5 ohm -0.11.08.97.78.97.78.97.7
30.5 ohm 2.01.68.06.38.06.38.06.3
62.4 ohm 5.03.15.03.15.03.15.03.1
100 ohm 3.02.03.02.03.02.03.02.0
198.9 ohm 0.01.00.01.00.01.00.01.0
300 ohm -1.70.7-1.70.7-1.70.7-1.70.7
763 ohm -5.80.3-5.80.3-5.80.3-5.80.3



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Spectrum of Total Harmonic Distortion vs Level ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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Level

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dBm

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dBV

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Spectrum of Multitone Distortion vs Level vs Load ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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Spectrum of IMD SMPTE vs Level ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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dBm

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Spectrum of IMD CCIF vs Level ASUS ROG Strix Fusion 700 USB (as headphone amplifier)

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dBm

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More detailed

Measurements of ASUS ROG Strix Fusion 700 USB were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The ASUS ROG Strix Fusion 700 USB 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



Known by the nickname romanrex
Аuthor of articles iXBT.com



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