Measurement's report Pro-Ject Head Box DS2 B Balanced Out 18 High test and graphs - Reference Audio Analyzer

Reports / Pro-Ject / Head Box DS2 B / Balanced Out 18 High / A set of device tests as a headphone amplifier - report for a pro

Test report Pro-Ject Head Box DS2 B: Balanced Out 18 High (report for a pro)






Test report - general data of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode

Frequency response, Impedance and Frequency response with standard headphones


Graphics setting view
Range, dB:

The maximum level of voltage from the musical power


General results
General results
Pro-Ject Head Box DS2 B Balanced Out 18 High
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,05, 0,03
Average value of impedance band in 40 Hz to 15 kHz, ohm
13,2
Max voltage output
VRMS
dBV
Pure or equal class A
16,04
24,11
Optimal or equal class AB
16,04
24,11
Hard or equal class B
16,04
24,11
Max, before clipping
16,04
24,11
Maximum current output at loaded
ohm
mA
Pure or equal class A
15,8
143,32
Optimal or equal class AB
15,8
40,41
Hard or equal class B
15,8
143,32
Max, before clipping
15,8
143,32
Max power output
ohm
mW
dBm
Pure or equal class A
100,0
748,24
28,74
Optimal or equal class AB
763,0
282,15
24,50
Hard or equal class B
100,0
748,24
28,74
Max, before clipping
100,0
748,24
28,74

The table shows a most important technical characteristics of Pro-Ject Head Box DS2 B Balanced Out 18 High

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



Test conditions



Frequency response of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response Pro-Ject Head Box DS2 B Balanced Out 18 High
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,05, 0,03
-0,05, 0,05

Impedance of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance Pro-Ject Head Box DS2 B Balanced Out 18 High
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
13,2
13,2
Resistance at 500 Hz, ohm
13,2
13,2
Resistance at 1000 Hz, ohm
13,2
13,2
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
13,1
13,1
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
450,9
107,7
The maximum value in band from 40 Hz to 15 kHz, ohm
13,2
13,2

Crosstalk of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


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




Table of measured characteristics

Crosstalk Phase of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Channel:
Load, ohm:



Frequency response of Pro-Ject Head Box DS2 B Balanced Out 18 High with loaded resistors as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier Pro-Ject Head Box DS2 B Balanced Out 18 High
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
0,02
Variation in frequency response in band 40 Hz to 15 kHz loaded 50 ohm, dB
0,02
Variation in frequency response in band 40 Hz to 15 kHz loaded 100 ohm, dB
0,01
Variation in frequency response in band 40 Hz to 15 kHz loaded 250 ohm, dB
0,00
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 Pro-Ject Head Box DS2 B Balanced Out 18 High loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier Pro-Ject Head Box DS2 B Balanced Out 18 High
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
1,27

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


Deviation of frequency response of Pro-Ject Head Box DS2 B Balanced Out 18 High loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier Pro-Ject Head Box DS2 B Balanced Out 18 High
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
1,24

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


Frequency response of Pro-Ject Head Box DS2 B Balanced Out 18 High 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 Pro-Ject Head Box DS2 B Balanced Out 18 High
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
4,48

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


Deviation of frequency response of Pro-Ject Head Box DS2 B Balanced Out 18 High 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 Pro-Ject Head Box DS2 B Balanced Out 18 High
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
4,45

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




Maximum voltage output level vs load of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum voltage output level vs load Pro-Ject Head Box DS2 B Balanced Out 18 High (the source data for the spectra)
Limit
Pure or equal class A
Optimal or equal class AB
Hard or equal class B
Max, before clipping
Level
VRMS
dBV
VRMS
dBV
VRMS
dBV
VRMS
dBV
loaded 16 ohm
2,26
7,10
0,64
-3,90
2,26
7,10
2,26
7,10
loaded 25 ohm
3,25
10,24
0,92
-0,76
3,25
10,24
3,25
10,24
loaded 31 ohm
4,10
12,25
1,15
1,25
4,10
12,25
4,10
12,25
loaded 62 ohm
6,04
15,61
1,91
5,61
6,04
15,61
6,04
15,61
loaded 100 ohm
8,65
18,74
3,44
10,74
8,65
18,74
8,65
18,74
loaded 199 ohm
11,64
21,32
4,63
13,32
11,64
21,32
11,64
21,32
loaded 300 ohm
13,25
22,45
8,36
18,45
13,25
22,45
13,25
22,45
loaded 763 ohm
14,67
23,33
14,67
23,33
14,67
23,33
14,67
23,33
Not loaded
16,04
24,11
16,04
24,11
16,04
24,11
16,04
24,11





The maximum level of voltage from the musical power of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode




Brief information


Table of measured characteristics
Recommended impedances for headphones for Pro-Ject Head Box DS2 B Balanced Out 18 High
Recommended impedance for headphones from the range
8 - 1008 Ом для режима работы усилителя
Equivalent class A
Max, before clipping
For In-Ear Headphones
8 - 1007 ohm
8 - 1007 ohm
For Over-Ear Headphones
8 - 1007 ohm
8 - 1007 ohm


Table of measured characteristics
Pro-Ject Head Box DS2 B Balanced Out 18 High
Output Impedance
13.17 ohm
Power characteristics of the
Voltage
Current
Equivalent class A
16.04 VRMS
24.10 dBV
107.53 mA
40.63 dB(mA)
Equivalent class AB
16.04 VRMS
24.10 dBV
40.43 mA
32.13 dB(mA)
Equivalent class B
16.04 VRMS
24.10 dBV
147.97 mA
43.40 dB(mA)
Maximum mode
16.04 VRMS
24.10 dBV
147.97 mA
43.40 dB(mA)

Maximum current level output vs load of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum current level output vs load Pro-Ject Head Box DS2 B Balanced Out 18 High (the source data for the spectra)
Level, mA
Pure or equal class A
Optimal or equal class AB
Hard or equal class B
Max, before clipping
Level
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
loaded 16 ohm
143,32
43,13
40,41
32,13
143,32
43,13
143,32
43,13
loaded 25 ohm
132,72
42,46
37,41
31,46
132,72
42,46
132,72
42,46
loaded 31 ohm
134,35
42,56
37,86
31,56
134,35
42,56
134,35
42,56
loaded 62 ohm
96,72
39,71
30,58
29,71
96,72
39,71
96,72
39,71
loaded 100 ohm
86,50
38,74
34,44
30,74
86,50
38,74
86,50
38,74
loaded 199 ohm
58,51
35,34
23,29
27,34
58,51
35,34
58,51
35,34
loaded 300 ohm
44,18
32,90
27,87
28,90
44,18
32,90
44,18
32,90
loaded 763 ohm
19,23
25,68
19,23
25,68
19,23
25,68
19,23
25,68
Not loaded
0,32
-9,87
0,32
-9,87
0,32
-9,87
0,32
-9,87



Maximum power level output level vs load of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum power level output level vs load Pro-Ject Head Box DS2 B Balanced Out 18 High (the source data for the spectra)
Limit
Pure or equal class A
Optimal or equal class AB
Hard or equal class B
Max, before clipping
Level
mW
dBm
mW
dBm
mW
dBm
mW
dBm
loaded 16 ohm
324,54
25,11
25,80
14,12
324,54
25,11
324,54
25,11
loaded 25 ohm
431,58
26,35
34,29
15,35
431,58
26,35
431,58
26,35
loaded 31 ohm
550,52
27,41
43,72
16,41
550,52
27,41
550,52
27,41
loaded 62 ohm
583,75
27,66
58,37
17,66
583,75
27,66
583,75
27,66
loaded 100 ohm
748,24
28,74
118,61
20,74
748,24
28,74
748,24
28,74
loaded 199 ohm
680,93
28,33
107,93
20,33
680,93
28,33
680,93
28,33
loaded 300 ohm
585,44
27,67
233,08
23,67
585,44
27,67
585,44
27,67
loaded 763 ohm
282,15
24,50
282,15
24,50
282,15
24,50
282,15
24,50
Not loaded
5,15
7,12
5,15
7,12
5,15
7,12
5,15
7,12





THD vs load vs output voltage of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode


Graphics setting view
Channel:
Load, ohm:
Type test:




Table of measured characteristics

Spectrum of Total Harmonic Distortion vs Level of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode

Not loaded


Graphics setting view
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:



Spectrum of IMD SMPTE vs Level of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode

Not loaded


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:



Spectrum of IMD CCIF vs Level of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode

Not loaded


Graphics setting view
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:



Spectrum of Multitone Distortion vs Level vs Load of Pro-Ject Head Box DS2 B Balanced Out 18 High as AMP mode

Not loaded


Graphics setting view
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:




On-line comparison and selection services for Pro-Ject Head Box DS2 B

Comparison of basic characteristics: Voltage, Current and Impedance

Compare a changed frequency response the bundles of Head Box DS2 B and headphones.

Comparison of amplifiers by loudness (Volume Level).

Comparison of the power characteristics of AMPs and interaction headphones. Additional headphone compatibility analytics.

Comparison of the optimal range of volume control

The automatic selection of the optimal AMP models.


Close

Measurements of Pro-Ject Head Box DS2 B Balanced Out 18 High were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Pro-Ject Head Box DS2 B Balanced Out 18 High 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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