This is a report for professionals with a suite of test of headphone amplifier.
You can see a simple report for "dummies" with explanations of the main characteristics for RME ADI-2 DAC FS 6.3 Hi Gain

A suite of tests for a headphone amplifier can be applied to just a universal output without a formal presence of an amplifier, if in this mode you can connect headphones to this output. Based on the results of the tests, you can understand the real picture, is the output powerful enough or not, with the initial data on the circuitry as a "black box".

Line-out, differences from the output for headphones and speakers

Advantages and disadvantages of balanced amplifiers

Test report - general data RME ADI-2 DAC FS (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

Voltage levels from the load at the output of the amplifier

Average value of impedance band in 40 Hz - 15 kHz	0.2	ohm
Voltage: Linear Mode / Maximum or before clipping level	19.3/19.3	dBV
	9.2/9.2	V_RMS
Current: Linear Mode / Maximum or before clipping level	47.7/47.7	dB(mA)
	242.4/242.4	mA

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Frequency response RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Range

Channel:	Left	Right
Variation in frequency response in band from 40 Hz - 15 kHz	-0.1, +0.0	-0.0, +0.0	dB

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response

Impedance RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Channel:	Left	Right
Impedance average in band from 40 Hz - 15 kHz	0.2	0.2	ohm
The minimum value in band from 40 Hz - 15 kHz	0.2	0.2	ohm
The maximum value in band from 40 Hz - 15 kHz	0.2	0.3	ohm

Comparison of basic characteristics AMPs

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Crosstalk RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Range

Load

Channel:	Left	Right
Crosstalk @ 1 kHz @ 15.8 ohm	-60.4	-60.3	dB
Crosstalk @ 1 kHz @ 24.5 ohm	-64.0	-63.9	dB
Crosstalk @ 1 kHz @ 30.5 ohm	-66.0	-66.0	dB
Crosstalk @ 1 kHz @ 62.4 ohm	-72.2	-72.2	dB
Crosstalk @ 1 kHz @ 100.0 ohm	-76.1	-76.1	dB
Crosstalk @ 1 kHz @ 198.9 ohm	-82.2	-81.6	dB
Crosstalk @ 1 kHz @ 300.0 ohm	-85.3	-85.0	dB
Crosstalk @ 1 kHz @ 763.0 ohm	-92.6	-91.5	dB
Crosstalk @ 1 kHz @ Not loaded	-107.0	-104.0	dB

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Crosstalk Phase RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Load

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Frequency response RME ADI-2 DAC FS 6.3 Hi Gain with resistive load

Graphics setting view

Channel

Range

Frequency response of amplifier with resistive load @ 40 Hz - 15 kHz

Channel:	Left	Right
TEST 16 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
TEST 32 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
TEST 64 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
TEST 126 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
TEST 256 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
TEST 512 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response

Frequency response RME ADI-2 DAC FS 6.3 Hi Gain loaded dynamic headphone type

Graphics setting view

Channel

Range

Frequency response of amplifier loaded dynamic headphone type @ 40 Hz - 15 kHz

Channel:	Left	Right
TEST 10000 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
Grado GH4 Limited Edition + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response

Frequency response RME ADI-2 DAC FS 6.3 Hi Gain loaded type balance armature headphone type

Graphics setting view

Channel

Range

Frequency response of amplifier loaded type balance armature headphone type @ 40 Hz - 15 kHz

Channel:	Left	Right
TEST 10000 ? + RME ADI-2 DAC FS 6.3 Hi Gain	0.0	0.0	dB
Campfire Audio Andromeda + RME ADI-2 DAC FS 6.3 Hi Gain	0.4	0.5	dB
Fearless Audio S8F Freedom + RME ADI-2 DAC FS 6.3 Hi Gain	0.3	0.4	dB

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response

THD vs load vs output voltage RME ADI-2 DAC FS 6.3 Hi Gain

Graphics setting view

Channel

Load

Harmonic, number

Graphics setting view

Channel

Load

Harmonic, number

Graphics setting view

Channel

Load

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Maximum voltage output level vs load RME ADI-2 DAC FS 6.3 Hi Gain

Graphics setting view

Type of chart

RAW coordinates

Power characteristics of the	Voltage		Current
	dBV	V_RMS	dB(mA)	mA
Equivalent class A	19.3	9.2	47.7	242.4
Equivalent class AB	19.3	9.2	47.7	242.4
Equivalent class B	19.3	9.2	47.7	242.4
Maximum mode	19.3	9.2	47.7	242.4

Volume Control Type	Digital
Optimal range of volume control	49.0	dB
Signal/Noise / Maximum	119.0/19.3	dB/dBV
Signal/Noise @ -14.9 dBV 32 ohm (1 mW)	84.85	dB
Signal/Noise @ -5.2 dBV 300 ohm (1 mW)	94.51	dB

Comparison RME ADI-2 DAC FS 6.3 Hi Gain and another amplifiers by loudness (Volume Level)

Main characteristics of the RME ADI-2 DAC FS 6.3 Hi Gain

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Maximum voltage output level vs load RME ADI-2 DAC FS 6.3 Hi Gain

Graphics setting view

Type of chart

RAW coordinates

Maximum Amplifier Voltage Level

Load	Pure or equal class A		Optimal or equal class AB		Hard or equal class B		Max, before clipping
	dBV	V_RMS	dBV	V_RMS	dBV	V_RMS	dBV	V_RMS
15.8 ohm	11.6	3.8	11.6	3.8	11.6	3.8	11.6	3.8
24.5 ohm	14.7	5.4	14.7	5.4	14.7	5.4	14.7	5.4
30.5 ohm	15.2	5.8	15.2	5.8	15.2	5.8	15.2	5.8
62.4 ohm	17.7	7.7	17.7	7.7	17.7	7.7	17.7	7.7
100 ohm	18.8	8.7	18.8	8.7	18.8	8.7	18.8	8.7
198.9 ohm	19.3	9.2	19.3	9.2	19.3	9.2	19.3	9.2
300 ohm	19.3	9.2	19.3	9.2	19.3	9.2	19.3	9.2
763 ohm	19.3	9.2	19.3	9.2	19.3	9.2	19.3	9.2
Not loaded	19.3	9.2	19.3	9.2	19.3	9.2	19.3	9.2

Maximum level of amplifier current

Load	Pure or equal class A		Optimal or equal class AB		Hard or equal class B		Max, before clipping
	dB(mA)	mA	dB(mA)	mA	dB(mA)	mA	dB(mA)	mA
15.8 ohm	47.7	242.0	47.7	242.0	47.7	242.0	47.7	242.0
24.5 ohm	46.9	221.5	46.9	221.5	46.9	221.5	46.9	221.5
30.5 ohm	45.5	188.8	45.5	188.8	45.5	188.8	45.5	188.8
62.4 ohm	41.8	123.5	41.8	123.5	41.8	123.5	41.8	123.5
100 ohm	38.8	86.6	38.8	86.6	38.8	86.6	38.8	86.6
198.9 ohm	33.3	46.2	33.3	46.2	33.3	46.2	33.3	46.2
300 ohm	29.7	30.6	29.7	30.6	29.7	30.6	29.7	30.6
763 ohm	21.6	12.0	21.6	12.0	21.6	12.0	21.6	12.0

Power

Load	Pure or equal class A		Optimal or equal class AB		Hard or equal class B		Max, before clipping
	dBm	mW	dBm	mW	dBm	mW	dBm	mW
15.8 ohm	29.7	925.3	29.7	925.3	29.7	925.3	29.7	925.3
24.5 ohm	30.8	1202.1	30.8	1202.1	30.8	1202.1	30.8	1202.1
30.5 ohm	30.4	1087.7	30.4	1087.7	30.4	1087.7	30.4	1087.7
62.4 ohm	29.8	952.3	29.8	952.3	29.8	952.3	29.8	952.3
100 ohm	28.8	750.1	28.8	750.1	28.8	750.1	28.8	750.1
198.9 ohm	26.3	424.1	26.3	424.1	26.3	424.1	26.3	424.1
300 ohm	24.5	281.4	24.5	281.4	24.5	281.4	24.5	281.4
763 ohm	20.4	110.7	20.4	110.7	20.4	110.7	20.4	110.7

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 vs Level RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Level

Range

Graphics setting view

Channel

Level

Range

Graphics setting view

Channel

Shift

dBm

Range

Graphics setting view

Channel

Shift

dBV

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 vs Level vs Load RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Level

Range

Graphics setting view

Channel

Level

Range

Graphics setting view

Channel

Shift

dBm

Range

Graphics setting view

Channel

Shift

dBV

Range

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Spectrum of IMD SMPTE vs Level RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Level

Range

Range

Graphics setting view

Channel

Level

Range

Range

Graphics setting view

Channel

Shift

Range

dBm

Range

Graphics setting view

Channel

Shift

Range

dBV

Range

Brief information

Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

Spectrum of IMD CCIF vs Level RME ADI-2 DAC FS 6.3 Hi Gain (as headphone amplifier)

Graphics setting view

Channel

Level

Range

Graphics setting view

Channel

Level

Range

Graphics setting view

Channel

Shift

dBm

Range

Graphics setting view

Channel

Shift

dBV

Range

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 RME ADI-2 DAC FS 6.3 Hi Gain were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The RME ADI-2 DAC FS 6.3 Hi Gain 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

Information for Authors. You can freely use the graphics in your articles with a link to us.

Original text in Russian page. Translation page is not yet ready

You can help with translation via the: facebook and feedback.

	Login	Password
You are logged in as guest
Setting	Register	Forgot your password?