Measurement's report SMSL sAp-9 Balance-in test and graphs - Reference Audio Analyzer

Reports / SMSL / sAp-9 / Balance-in / A set of device tests as a headphone amplifier - report for a pro

Test report SMSL sAp-9: Balance-in (report for a pro)






Test report - general data of SMSL sAp-9 Balance-in as AMP mode

Frequency response, Impedance and Frequency response with standard headphones


Graphics setting view
Range, dB:


General results
General results
SMSL sAp-9 Balance-in
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,08, 0,05
Average value of impedance band in 40 Hz to 15 kHz, ohm
51,1
Max voltage output
VRMS
dBV
Maximum current output at loaded
ohm
mA
Max power output
ohm
mW
dBm

The table shows a most important technical characteristics of SMSL sAp-9 Balance-in

*Center channel is received by data averaging between the left and right channels



Test conditions
  • For record of test signals RAA was used ADC: E-MU 1616m
  • The signal was played to the amplifier with DAC: E-MU1616m
  • The signal was tested with output: XLR
  • The bit size/format of the test signal: PCM 24 bit
  • During tests RAA software-hardware measuring complex was used galvanic isolated power transformer and was excluded the effect of ground loop in the spectra



Frequency response of SMSL sAp-9 Balance-in as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response SMSL sAp-9 Balance-in
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,06, 0,05
-0,06, 0,03

Impedance of SMSL sAp-9 Balance-in as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance SMSL sAp-9 Balance-in
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
51,7
50,4
Resistance at 500 Hz, ohm
51,8
50,4
Resistance at 1000 Hz, ohm
51,7
50,4
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
14028,9
14028,9
The minimum value in band from 40 Hz to 15 kHz, ohm
51,4
50,4
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
45,6
45,6
The maximum value in band from 40 Hz to 15 kHz, ohm
52,0
50,5

Crosstalk of SMSL sAp-9 Balance-in as AMP mode


Graphics setting view
Range, dB:
Channel:
Load, ohm:




Table of measured characteristics

Crosstalk Phase of SMSL sAp-9 Balance-in as AMP mode


Graphics setting view
Channel:
Load, ohm:



Frequency response of SMSL sAp-9 Balance-in with loaded resistors as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier SMSL sAp-9 Balance-in
with resistive load
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded 16 ohm, dB
0,04
Variation in frequency response in band 40 Hz to 15 kHz loaded 32 ohm, dB
0,03
Variation in frequency response in band 40 Hz to 15 kHz loaded 50 ohm, dB
0,03
Variation in frequency response in band 40 Hz to 15 kHz loaded 100 ohm, dB
0,02
Variation in frequency response in band 40 Hz to 15 kHz loaded 250 ohm, dB
0,01
Variation in frequency response in band 40 Hz to 15 kHz loaded 600 ohm, dB
0,00

*Center channel is received by data averaging between the left and right channels


Frequency response of SMSL sAp-9 Balance-in loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier SMSL sAp-9 Balance-in
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
3,62

*Center channel is received by data averaging between the left and right channels


Deviation of frequency response of SMSL sAp-9 Balance-in loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier SMSL sAp-9 Balance-in
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
3,62

*Center channel is received by data averaging between the left and right channels


Frequency response of SMSL sAp-9 Balance-in loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier SMSL sAp-9 Balance-in
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
10,02

*Center channel is received by data averaging between the left and right channels


Deviation of frequency response of SMSL sAp-9 Balance-in loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier SMSL sAp-9 Balance-in
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
9,80

*Center channel is received by data averaging between the left and right channels




Close

Measurements of SMSL sAp-9 Balance-in were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The SMSL sAp-9 Balance-in 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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SMSL sAp-9 is available in reports and services. You are in a professional report.

Information for entry level users

reports for a newbie (Headphone amplifier)
Information for professionals

reports for a pro(Headphone amplifier)
Comparison of on-line graphs






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