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.
Test report - general data Fosi Audio GR40 (as Line Out mode)
Max voltage output at 0 dBFS
5.7
dBV
1.9
VRMS
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Frequency response Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Frequency band
Type test:
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Impulse response Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Duration for impulse
Graphics setting view
Channel
Duration for impulse
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Aliasing Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Type test:
Frequency band
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Harmonic Distortion vs Level Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Comparison by
Harmonic, number
Range
Brief information
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Crosstalk Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Graphics setting view
Channel
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectrum of Total Harmonic Distortion (THD) Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Level @ dBFS
Range
Graphics setting view
Channel
Level @ dBFS
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectra Fosi Audio GR40 (as Line Out mode)
Spectrum of Dynamic Range (-60 dBFS)
Graphics setting view
Channel
Range
Sine low ammplitude spectrum -90 dBFS
Graphics setting view
Channel
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectrum of Multitone Distortion Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Level @ dBFS
Range
Graphics setting view
Channel
Range
Level @ dBFS
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectrum of Intermodulation Distortion (IMD) - SMPTE Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Level @ dBFS
Range
Range
Graphics setting view
Channel
Level @ dBFS
Range
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectrum of Intermodulation Distortion (IMD) - CCIF Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Level @ dBFS
Range
Graphics setting view
Channel
Level @ dBFS
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectrum of Noise Distortion Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Level @ dBFS
Range
Graphics setting view
Channel
Level @ dBFS
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Spectrum of Jitter Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Range
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Checking for correctness of reproduction signals depth more than 16-bit Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Waveforms / Spectra Fosi Audio GR40 (as Line Out mode)
Graphics setting view
Channel
Range
Graphics setting view
Channel
Range
Type test:
Frequency band
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
More detailed
Measurements of Fosi Audio GR40 were carried out by Roman Kuznetsov on the hardware-software complex RAA.
The Fosi Audio GR40 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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Fosi Audio GR40 is available in reports and services. You are in a professional report.