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 ASUS Essence STU HP1

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 ASUS Essence STU (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

Average value of impedance band in 40 Hz - 15 kHz

8.9

ohm

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 ASUS Essence STU HP1 were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The ASUS Essence STU HP1 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.

Essence STU was given for tests by ASUS

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.

ASUS Essence STU 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)

reports for a pro (DAC Line Out)

DAC Line Out

Comparison of on-line graphs

Quick jump to the schedule in this report: HP1

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

Channel:	Left	Right
TEST 16 ? + ASUS Essence STU HP1	0.0	0.0	dB
TEST 32 ? + ASUS Essence STU HP1	0.0	0.0	dB
TEST 64 ? + ASUS Essence STU HP1	0.0	0.0	dB
TEST 126 ? + ASUS Essence STU HP1	0.0	0.0	dB
TEST 256 ? + ASUS Essence STU HP1	0.0	0.0	dB
TEST 512 ? + ASUS Essence STU HP1	0.0	0.0	dB

Channel:	Left	Right
TEST 10000 ? + ASUS Essence STU HP1	0.0	0.0	dB
Grado GH4 Limited Edition + ASUS Essence STU HP1	1.4	1.3	dB

Channel:	Left	Right
TEST 10000 ? + ASUS Essence STU HP1	0.0	0.0	dB
Campfire Audio Andromeda + ASUS Essence STU HP1	8.1	8.0	dB
Fearless Audio S8F Freedom + ASUS Essence STU HP1	6.5	6.0	dB

ASUS Essence STU

About this report

Test report - general data ASUS Essence STU (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

Frequency response ASUS Essence STU HP1 (as headphone amplifier)

Impedance ASUS Essence STU HP1 (as headphone amplifier)

Frequency response ASUS Essence STU HP1 with resistive load

Frequency response ASUS Essence STU HP1 loaded dynamic headphone type

Frequency response ASUS Essence STU HP1 loaded type balance armature headphone type

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