Measurement's report Lenovo s820 PowerAmp (A4 v703) - Reference Audio Analyzer

Lenovo s820

PowerAmp (A4 v703)
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 4.2.1, Poweramp alpha-build-703, experimental Hi-Rez Out does not work. Tested from OpenSL.



Test report - general data Lenovo s820 (as Line Out mode)

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Max voltage output at 0 dBFS-13.3dBV
0.2VRMS





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Frequency response Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Range

Frequency band


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Harmonic Distortion vs Level Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Comparison by

Harmonic, number


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Crosstalk Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Spectrum of Total Harmonic Distortion (THD) Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Level @ dBFS

Range

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Level @ dBFS

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Spectra Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

Spectrum of Dynamic Range (-60 dBFS)

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Range

Sine low ammplitude spectrum -90 dBFS

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Spectrum of Multitone Distortion Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Range

Level @ dBFS

Range

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Level @ dBFS

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Spectrum of Intermodulation Distortion (IMD) - SMPTE Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Level @ dBFS

Range

Range

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Level @ dBFS

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Range


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Spectrum of Intermodulation Distortion (IMD) - CCIF Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Level @ dBFS

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Level @ dBFS

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Spectrum of Noise Distortion Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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Level @ dBFS

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Level @ dBFS

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Spectrum of Jitter Lenovo s820 PowerAmp (A4 v703) (as Line Out mode)

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More detailed

Measurements of Lenovo s820 PowerAmp (A4 v703) were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Lenovo s820 PowerAmp (A4 v703) 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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