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 xDuoo XD-05 Plus Hi Boost Off

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 xDuoo XD-05 Plus (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

Voltage levels from the load at the output of the amplifier

The main parameters of the universal block diagram of the amplifier
Average value of impedance band in 40 Hz - 15 kHz	2.3	ohm
Voltage: Linear Mode / Maximum or before clipping level	12.8/12.8	dBV
	4.4/4.4	V_RMS
Current: Linear Mode / Maximum or before clipping level	16.2/42.2	dB(mA)
	6.5/129.0	mA

Brief information

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

Frequency response xDuoo XD-05 Plus Hi Boost Off (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	-0.1, +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 xDuoo XD-05 Plus Hi Boost Off (as headphone amplifier)

Graphics setting view

Channel

Channel:	Left	Right
Impedance average in band from 40 Hz - 15 kHz	2.3	2.3	ohm
The minimum value in band from 40 Hz - 15 kHz	2.3	2.3	ohm
The maximum value in band from 40 Hz - 15 kHz	2.3	2.3	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 xDuoo XD-05 Plus Hi Boost Off (as headphone amplifier)

Graphics setting view

Channel

Range

Load

Channel:	Left	Right
Crosstalk @ 1 kHz @ 15.8 ohm	-69.8	-67.1	dB
Crosstalk @ 1 kHz @ 24.5 ohm	-73.2	-70.5	dB
Crosstalk @ 1 kHz @ 30.5 ohm	-74.3	-72.6	dB
Crosstalk @ 1 kHz @ 62.4 ohm	-80.6	-79.6	dB
Crosstalk @ 1 kHz @ 100.0 ohm	-82.2	-84.3	dB
Crosstalk @ 1 kHz @ 198.9 ohm	-85.0	-91.4	dB
Crosstalk @ 1 kHz @ 300.0 ohm	-84.6	-95.0	dB
Crosstalk @ 1 kHz @ 763.0 ohm	-84.8	-98.2	dB
Crosstalk @ 1 kHz @ Not loaded	-86.9	-92.7	dB

Brief information

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

Crosstalk Phase xDuoo XD-05 Plus Hi Boost Off (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 xDuoo XD-05 Plus Hi Boost Off with resistive load

Graphics setting view

Channel

Range

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

Channel:	Left	Right
TEST 16 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
TEST 32 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
TEST 64 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
TEST 126 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
TEST 256 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
TEST 512 ? + xDuoo XD-05 Plus Hi Boost Off	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 xDuoo XD-05 Plus Hi Boost Off 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 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
Grado GH4 Limited Edition + xDuoo XD-05 Plus Hi Boost Off	0.4	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

Frequency response xDuoo XD-05 Plus Hi Boost Off 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 ? + xDuoo XD-05 Plus Hi Boost Off	0.0	0.0	dB
Campfire Audio Andromeda + xDuoo XD-05 Plus Hi Boost Off	3.4	3.4	dB
Fearless Audio S8F Freedom + xDuoo XD-05 Plus Hi Boost Off	2.8	2.6	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 xDuoo XD-05 Plus Hi Boost Off

Graphics setting view

Channel

Load

Harmonic, number

Range

Graphics setting view

Channel

Load

Harmonic, number

Range

Graphics setting view

Channel

Load

Range

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 xDuoo XD-05 Plus Hi Boost Off

Graphics setting view

Type of chart

RAW coordinates

Power characteristics of the	Voltage		Current
	dBV	V_RMS	dB(mA)	mA
Linear Mode	12.8	4.4	16.2	6.5
Optimal Mode	12.8	4.4	42.2	129.0
Hard Mode	12.8	4.4	42.2	129.0
Maximum mode	12.8	4.4	42.2	129.0

Volume Control Type	Analog
Optimal range of volume control	36.0	dB

Comparison xDuoo XD-05 Plus Hi Boost Off and another amplifiers by loudness (Volume Level)

Main characteristics of the xDuoo XD-05 Plus Hi Boost Off

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 xDuoo XD-05 Plus Hi Boost Off

Graphics setting view

Type of chart

RAW coordinates

Maximum Amplifier Voltage Level

Load	Linear Mode		Optimal Mode		Hard Mode		Max, before clipping
	dBV	V_RMS	dBV	V_RMS	dBV	V_RMS	dBV	V_RMS
15.8 ohm	-18.8	0.1	6.2	0.1	6.2	0.1	6.2	0.1
24.5 ohm	-12.4	0.2	8.6	0.2	8.6	0.2	8.6	0.2
30.5 ohm	-15.4	0.2	9.6	0.2	9.6	0.2	9.6	0.2
62.4 ohm	-9.4	0.3	11.6	0.3	11.6	0.3	11.6	0.3
100 ohm	-2.9	0.7	12.1	0.7	12.1	0.7	12.1	0.7
198.9 ohm	3.4	1.5	11.4	1.5	11.4	1.5	11.4	1.5
300 ohm	3.5	1.5	11.5	1.5	12.5	1.5	12.5	1.5
763 ohm	9.7	3.1	12.8	3.1	12.8	3.1	12.7	3.1
Not loaded	12.8	4.4	12.8	4.4	12.8	4.4	12.8	4.4

Maximum level of amplifier current

Load	Linear Mode		Optimal Mode		Hard Mode		Max, before clipping
	dB(mA)	mA	dB(mA)	mA	dB(mA)	mA	dB(mA)	mA
15.8 ohm	17.2	7.3	42.2	129.0	42.2	129.0	42.2	129.0
24.5 ohm	19.8	9.8	40.8	110.2	40.8	110.2	40.8	110.2
30.5 ohm	14.9	5.6	39.9	99.1	39.9	99.1	39.9	99.1
62.4 ohm	14.7	5.4	35.7	60.6	35.7	60.6	35.7	60.6
100 ohm	17.1	7.1	32.1	40.2	32.1	40.2	32.1	40.2
198.9 ohm	17.5	7.5	25.5	18.7	25.5	18.7	25.5	18.7
300 ohm	14.0	5.0	22.0	12.6	23.0	14.1	23.0	14.1
763 ohm	12.1	4.0	15.1	5.7	15.1	5.7	15.1	5.7

Power

Load	Linear Mode		Optimal Mode		Hard Mode		Max, before clipping
	dBm	mW	dBm	mW	dBm	mW	dBm	mW
15.8 ohm	-0.8	0.8	24.2	263.0	24.2	263.0	24.2	263.0
24.5 ohm	3.7	2.4	24.7	297.3	24.7	297.3	24.7	297.3
30.5 ohm	-0.2	0.9	24.8	299.8	24.8	299.8	24.8	299.8
62.4 ohm	2.6	1.8	23.6	229.5	23.6	229.5	23.6	229.5
100 ohm	7.1	5.1	22.1	161.3	22.1	161.3	22.1	161.3
198.9 ohm	10.4	11.1	18.4	69.8	18.4	69.8	18.4	69.8
300 ohm	8.8	7.5	16.8	47.6	17.8	59.9	17.8	59.9
763 ohm	10.9	12.2	14.0	24.9	14.0	24.9	13.9	24.4

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 xDuoo XD-05 Plus Hi Boost Off (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 xDuoo XD-05 Plus Hi Boost Off (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 xDuoo XD-05 Plus Hi Boost Off (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 xDuoo XD-05 Plus Hi Boost Off (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 xDuoo XD-05 Plus Hi Boost Off were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The xDuoo XD-05 Plus Hi Boost Off 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.

xDuoo XD-05 Plus was given for tests by Xtenik Audio

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.

xDuoo XD-05 Plus is available in reports and services. You are in a professional report.

Information for entry level users

reports for a newbie (Headphone amplifier)

The automatic selection of the optimal AMP models

Information for all

Soft players and USB transports

Versus of characteristics

Information for professionals

reports for a pro (Headphone amplifier)

reports for a pro (DAC Line Out)

Comparison of on-line graphs

Quick jump to the schedule in this report: Hi Boost Off

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

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

Comments

penso996
Изображения, медиа и смайлы доступны в исходном чате.
2022-09-22 22:20:07

Comment to the contents of reports xDuoo XD-05 Plus

Hello, these are really technical graph, I've been here for at least two hours trying to understand. I just want to know how this xDuoo would behave with HD800s, which specs are 102dB/V @ 300Ohm.
Thanks for your precious work.

romanrex
Изображения, медиа и смайлы доступны в исходном чате.
2022-09-23 14:24:06

Комментарий к оглавлению отчетов xDuoo XD-05 Plus

xDuuo XD-05 Plus volume level depends of modes Hi/Mid/Low and Boost On/Off
http://reference-audio-analyzer.pro/param21.php?&idhp0=706&idamp0=2124&vol0=0&idhp1=706&idamp1=2121&vol1=0&idhp2=706&idamp2=2125&vol2=0&idhp3=706&idamp3=2123&vol3=0&idhp4=706&idamp4=2122&vol4=0&idhp5=706&idamp5=2126&vol5=0&ls=2&tit_graph=2&cl0=%23bb0303&cl2_0=%23bb0303&cl1=%23094a78&cl2_1=%23094a78&cl2=%23029602&cl2_2=%23029602&cl3=%23bb6b03&cl2_3=%23bb6b03&cl4=%238e2424&cl2_4=%238e2424&cl5=%231b415b&cl2_5=%231b415b&style0=0&style1=0&style2=0&style3=0&style4=0&style5=0&mh147=147&ma176=176

The most loud mode of bundle (HD 800s and XD-05 Plus) is Hi Boost On.

xDuuo XD-05 Plus gives The best quality before 108.5 dB SPL (this level between sature color and light color) and it gives maximum volume level before 123.5 dB SPL.

You can choose famous devices and make comparison their loud. This example, HS800s and different AMP sources

http://reference-audio-analyzer.pro/param21.php?&idhp0=706&idamp0=2125&vol0=0&idhp1=706&idamp1=3103&vol1=0&idhp2=706&idamp2=2908&vol2=0&idhp3=706&idamp3=3668&vol3=0&ls=2&cl0=%23029602&cl2_0=%23029602&cl1=%23bb0303&cl2_1=%23bb0303&cl2=%23094a78&cl2_2=%23094a78&cl3=%23bb6b03&cl2_3=%23bb6b03&style0=0&style1=0&style2=0&style3=0&mh147=147&ma286=286

Or different headphones with XD-05 Plus

http://reference-audio-analyzer.pro/param21.php?&idhp0=706&idamp0=2125&vol0=0&idhp1=3808&idamp1=2125&vol1=0&idhp2=719&idamp2=2125&vol2=0&idhp3=1814&idamp3=2125&vol3=0&ls=2&cl0=%23029602&cl2_0=%23029602&cl1=%23bb0303&cl2_1=%23bb0303&cl2=%23094a78&cl2_2=%23094a78&cl3=%23BB6B03&cl2_3=%23BB6B03&style0=0&style1=0&style2=0&style3=0&mh25=25&mh72=72&ma176=176

I think subjective quality HD800s is better than portable XD-05 Plus. HD800s can gives Most quality with different desktop Amps.

penso996
Изображения, медиа и смайлы доступны в исходном чате.
2022-09-23 20:44:13

Comment to the contents of reports xDuoo XD-05 Plus

Thank you so much for you answer.
To be fair I own the xDuoo XD05 Bal, but unfortunately, you don't have done any measurement.
In my mind it was a fair comparison between them two, but only then I aknowledged that the xDuoo XD05 Bal has way more Volt through the Balanced 4,4 Output, and also it has overral better sound quality. But I can't find exact output data over the web. So I'm still hoping it can drive HD800s at least at 90% of them potential. Power and quality wise.
If you have any idea regard how xDuoo 05 Bal would sound with HD800s it would be awesome.
My problem is that I can only own a portable Amp, but I'd really like to own a pair of HD800s as well, so I'm kinda stuck.
If you have any opinion or suggestion, a portable DAC/Amp that can do the job with the HD800s for example, that would be extremely appreciated.
Thank you so much for your effort.

romanrex
Изображения, медиа и смайлы доступны в исходном чате.
2022-09-26 14:05:16

Comment to the contents of reports xDuoo XD-05 Plus

penso996 2022-09-23 20:44:13
Comment to the contents of reports xDuoo XD-05 Plus
Thank you so much for you answer.
To be fair I own the xDuoo XD05 Bal, but unfortunately, you don't have done any measurement.
In my mind it was a fair comparison between them two, but only then I aknowledged that the xDuoo XD05 Bal has way more Volt through the Balanced 4,4 Output, and also it has overral better sound quality. But I can't find exact output data over the web. So I'm still hoping it can drive HD800s at least at 90% of them potential. Power and quality wise.
If you have any idea regard how xDuoo 05 Bal would sound with HD800s it would be awesome.
My problem is that I can only own a portable Amp, but I'd really like to own a pair of HD800s as well, so I'm kinda stuck.
If you have any opinion or suggestion, a portable DAC/Amp that can do the job with the HD800s for example, that would be extremely appreciated.
Thank you so much for your effort.

Today I'll get xDuoo XD-05 Balanced to measurement. The report will be in a few days.

romanrex
Изображения, медиа и смайлы доступны в исходном чате.
2022-10-10 12:33:29

Comment to the contents of reports xDuoo XD-05 Plus

romanrex 2022-09-26 14:05:16
Comment to the contents of reports xDuoo XD-05 Plus
Today I'll get xDuoo XD-05 Balanced to measurement. The report will be in a few days.

xDuoo XD-05 Balanced reports https://reference-audio-analyzer.pro/title-report.php?id=4056

And review https://reference-audio-analyzer.pro/review-report.php?id=4056

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