Xiaomi Redmi Note 4X

PowerAmp (A6 v703) 44 kHz

About this report

This is a report for professionals with a suite of tests for line output devices. Alternative version of the report for "dummies" in development.

A suite of tests for the line-out can be used for headphone or speaker output if in this mode it is possible to use the device as a source for connecting an external amplifier or if such a test suite can give more information about the implementation of the DAC in the device.

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

Poweramp. player was used.

Commentary to the report

Android 6, Poweramp alpha-build-703, experimental Hi-Rez Out

Test report - general data Xiaomi Redmi Note 4X (as Line Out mode)

Max voltage output at 0 dBFS	-4.7	dBV
	0.6	V_RMS

Brief information

Frequency response Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Frequency band

Type test:

Brief information

Impulse response Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Duration for impulse

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Duration for impulse

Brief information

Aliasing Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Type test:

Brief information

Harmonic Distortion vs Level Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Comparison by

Harmonic, number

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Brief information

Crosstalk Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Spectrum of Total Harmonic Distortion (THD) Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Level @ dBFS

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Level @ dBFS

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Brief information

Spectra Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

Spectrum of Dynamic Range (-60 dBFS)

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Sine low ammplitude spectrum -90 dBFS

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Brief information

Spectrum of Multitone Distortion Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Level @ dBFS

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Level @ dBFS

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Brief information

Spectrum of Intermodulation Distortion (IMD) - SMPTE Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Level @ dBFS

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Range

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Level @ dBFS

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Spectrum of Intermodulation Distortion (IMD) - CCIF Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Level @ dBFS

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Level @ dBFS

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Spectrum of Noise Distortion Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Level @ dBFS

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Level @ dBFS

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Brief information

Spectrum of Jitter Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Range

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Checking for correctness of reproduction signals depth more than 16-bit Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz (as Line Out mode)

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Brief information

More detailed

Measurements of Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Xiaomi Redmi Note 4X PowerAmp (A6 v703) 44 kHz 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.

Kuznetsov Roman
Founder of RAA

Known by the nickname romanrex
Аuthor of articles iXBT.com

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