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.
Signal-to-noise ratio from the minimum background noise level, dB
-121.46
-121.55
-125.66
-125.81
-124.96
-124.91
-122.36
-122.41
Volume control range, dB
99.99
100.00
Noise floor level at the minimum volume level position, dBV
-115.55
-115.64
-119.75
-119.90
-119.05
-119.00
-116.45
-116.50
Noise floor level at the minimum volume level position, µVRMS
1.67
1.65
1.03
1.01
1.12
1.12
1.51
1.50
Optimal range of volume control, dB
51.31
51.05
55.56
55.61
54.76
54.81
52.26
52.21
Maximum level at 0 dBFS, dBV
5.91
5.91
Additional information
Signal-to-noise at maximum volume level, dB
-121.31
-121.05
-125.56
-125.61
-124.76
-124.81
-122.26
-122.21
Noise floor level at maximum volume level, dBV
-115.40
-115.14
-119.65
-119.70
-118.85
-118.90
-116.35
-116.30
The difference in noise floor from the minimum and maximum volume levels, dB
0.15
0.50
0.10
0.20
0.20
0.10
0.10
0.20
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Frequency response Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (as Line Out mode)
Graphics setting view
Channel
Comparison by
Harmonic, number
Range
Brief information
Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.
Crosstalk Aful SnowyNight Single-Ended (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) Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended (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 Aful SnowyNight Single-Ended were carried out by Roman Kuznetsov on the hardware-software complex RAA.
The Aful SnowyNight Single-Ended 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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