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 Lotoo Paw Gold

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 Lotoo Paw Gold (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	0.0	ohm
Voltage: Linear Mode / Maximum or before clipping level	7.0/8.0	dBV
	2.2/2.5	V_RMS
Current: Linear Mode / Maximum or before clipping level	21.8/38.9	dB(mA)
	12.3/87.7	mA

Brief information

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

THD vs load vs output voltage Lotoo Paw Gold

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 Lotoo Paw Gold

Graphics setting view

Type of chart

RAW coordinates

Power characteristics of the	Voltage		Current
	dBV	V_RMS	dB(mA)	mA
Equivalent class A	7.0	2.2	21.8	12.3
Equivalent class AB	8.0	2.5	38.9	87.7
Equivalent class B	8.0	2.5	38.9	87.7
Maximum mode	8.0	2.5	38.9	87.7

Volume Control Type	Digital
Optimal range of volume control	36.0	dB
Signal/Noise / Maximum	106.0/8.0	dB/dBV
Signal/Noise @ -14.9 dBV 32 ohm (1 mW)	83.57	dB
Signal/Noise @ -5.2 dBV 300 ohm (1 mW)	92.85	dB

Comparison Lotoo Paw Gold and another amplifiers by loudness (Volume Level)

Main characteristics of the Lotoo Paw Gold

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 Lotoo Paw Gold

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	-18.2	0.1	2.8	0.1	2.8	0.1	2.8	0.1
24.5 ohm	-9.1	0.3	5.9	0.3	5.9	0.3	5.9	0.3
30.5 ohm	-9.1	0.4	6.9	0.4	6.9	0.4	6.9	0.4
62.4 ohm	-0.1	1.0	7.9	1.0	7.9	1.0	7.9	1.0
100 ohm	2.9	1.4	7.9	1.4	7.9	1.4	7.9	1.4
198.9 ohm	7.0	2.2	8.0	2.2	8.0	2.2	8.0	2.2
300 ohm	6.0	2.0	8.0	2.0	8.0	2.0	8.0	2.0
763 ohm	7.0	2.2	8.0	2.2	8.0	2.2	8.0	2.2
Not loaded	7.0	2.2	8.0	2.2	8.0	2.2	8.0	2.2

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	17.9	7.8	38.9	87.7	38.9	87.7	38.9	87.7
24.5 ohm	23.1	14.3	38.1	80.3	38.1	80.3	38.1	80.3
30.5 ohm	21.2	11.5	37.2	72.5	37.2	72.5	37.2	72.5
62.4 ohm	24.0	15.9	32.0	39.9	32.0	39.9	32.0	39.9
100 ohm	22.9	14.0	27.9	25.0	27.9	25.0	27.9	25.0
198.9 ohm	21.0	11.2	22.0	12.6	22.0	12.6	22.0	12.6
300 ohm	16.4	6.6	18.4	8.3	18.4	8.3	18.4	8.3
763 ohm	9.3	2.9	10.3	3.3	10.3	3.3	10.3	3.3

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	-0.2	1.0	20.8	121.4	20.8	121.4	20.8	121.4
24.5 ohm	7.0	5.0	22.0	158.0	22.0	158.0	22.0	158.0
30.5 ohm	6.1	4.0	22.1	160.5	22.1	160.5	22.1	160.5
62.4 ohm	12.0	15.8	20.0	99.6	20.0	99.6	20.0	99.6
100 ohm	12.9	19.7	17.9	62.3	17.9	62.3	17.9	62.3
198.9 ohm	14.0	24.9	15.0	31.4	15.0	31.4	15.0	31.4
300 ohm	11.2	13.1	13.2	20.8	13.2	20.8	13.2	20.8
763 ohm	8.1	6.5	9.1	8.2	9.1	8.2	9.1	8.2

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 Lotoo Paw Gold (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 Lotoo Paw Gold were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Lotoo Paw Gold 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

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

Lotoo Paw Gold is available in reports and services. You are in a professional report.

Information for entry level users

report for a newbie

The automatic selection of the optimal AMP models

Information for all

Versus of characteristics

Information for professionals

reports for a pro (Headphone amplifier)

Headphone amplifier

reports for a pro (DAC Line Out)

DAC Line Out

Comparison of on-line graphs

Quick jump to the schedule in this report:

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