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 Erzetich Bacillus Tilia

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 Erzetich Bacillus Tilia (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	57.4	ohm
Voltage: Linear Mode / Maximum or before clipping level	17.1/18.1	dBV
	7.2/8.0	V_RMS
Current: Linear Mode / Maximum or before clipping level	23.6/38.1	dB(mA)
	15.1/79.9	mA

Brief information

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

Frequency response Erzetich Bacillus Tilia (as headphone amplifier)

Graphics setting view

Channel

Range

Channel:	Left	Right
Variation in frequency response in band from 40 Hz - 15 kHz	-0.0, +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 Erzetich Bacillus Tilia (as headphone amplifier)

Graphics setting view

Channel

Channel:	Left	Right
Impedance average in band from 40 Hz - 15 kHz	57.5	57.3	ohm
The minimum value in band from 40 Hz - 15 kHz	57.5	57.3	ohm
The maximum value in band from 40 Hz - 15 kHz	57.5	57.3	ohm

Comparison of basic characteristics AMPs

Brief information

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Frequency response Erzetich Bacillus Tilia with resistive load

Graphics setting view

Channel

Range

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

Channel:	Left	Right
TEST 16 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
TEST 32 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
TEST 64 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
TEST 126 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
TEST 256 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
TEST 512 ? + Erzetich Bacillus Tilia	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 Erzetich Bacillus Tilia 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 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
Grado GH4 Limited Edition + Erzetich Bacillus Tilia	5.6	5.2	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 Erzetich Bacillus Tilia 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 ? + Erzetich Bacillus Tilia	0.0	0.0	dB
Campfire Audio Andromeda + Erzetich Bacillus Tilia	14.2	14.3	dB
Fearless Audio S8F Freedom + Erzetich Bacillus Tilia	10.9	10.1	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 Erzetich Bacillus Tilia

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 Erzetich Bacillus Tilia

Graphics setting view

Type of chart

RAW coordinates

Power characteristics of the	Voltage		Current
	dBV	V_RMS	dB(mA)	mA
Equivalent class A	17.1	7.2	23.6	15.1
Equivalent class AB	17.1	7.2	37.0	71.2
Equivalent class B	17.1	7.2	37.0	71.2
Maximum mode	18.1	8.0	38.1	79.9

Volume Control Type	Analog
Optimal range of volume control	56.0	dB

Comparison Erzetich Bacillus Tilia and another amplifiers by loudness (Volume Level)

Main characteristics of the Erzetich Bacillus Tilia

Brief information

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Maximum voltage output level vs load Erzetich Bacillus Tilia

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	-13.0	0.2	1.0	0.2	1.0	0.2	2.0	0.2
24.5 ohm	-9.8	0.3	4.2	0.3	4.2	0.3	5.2	0.3
30.5 ohm	-5.4	0.5	5.6	0.5	5.6	0.5	6.6	0.5
62.4 ohm	-1.0	0.9	10.0	0.9	10.0	0.9	11.0	0.9
100 ohm	4.2	1.6	12.2	1.6	12.2	1.6	13.2	1.6
198.9 ohm	14.5	5.3	14.5	5.3	14.5	5.3	15.5	5.3
300 ohm	16.5	6.6	15.5	6.6	15.5	6.6	16.5	6.6
763 ohm	16.4	6.6	16.4	6.6	16.4	6.6	17.4	6.6
Not loaded	17.1	7.2	17.1	7.2	17.1	7.2	18.1	7.2

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	23.1	14.2	37.0	71.2	37.0	71.2	38.1	79.9
24.5 ohm	22.4	13.2	36.4	66.1	36.4	66.1	37.4	74.2
30.5 ohm	25.0	17.7	35.9	62.7	35.9	62.7	36.9	70.4
62.4 ohm	23.1	14.2	34.0	50.4	34.0	50.4	35.0	56.5
100 ohm	24.2	16.3	32.2	40.8	32.2	40.8	33.2	45.8
198.9 ohm	28.5	26.5	28.5	26.5	28.5	26.5	29.5	29.8
300 ohm	26.9	22.2	25.9	19.7	25.9	19.7	26.9	22.2
763 ohm	18.7	8.7	18.7	8.7	18.7	8.7	19.7	9.7

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	5.1	3.2	19.0	80.1	19.0	80.1	20.0	100.9
24.5 ohm	6.3	4.3	20.3	107.2	20.3	107.2	21.3	134.9
30.5 ohm	9.8	9.5	20.8	120.0	20.8	120.0	21.8	151.1
62.4 ohm	11.0	12.6	22.0	158.5	22.0	158.5	23.0	199.5
100 ohm	14.2	26.5	22.2	166.5	22.2	166.5	23.2	209.8
198.9 ohm	21.5	140.1	21.5	140.1	21.5	140.1	22.5	176.4
300 ohm	21.7	147.2	20.7	117.0	20.7	117.0	21.7	147.2
763 ohm	17.6	57.2	17.6	57.2	17.6	57.2	18.6	72.0

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 Erzetich Bacillus Tilia (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 Erzetich Bacillus Tilia were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Erzetich Bacillus Tilia 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.

Erzetich Bacillus Tilia 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

report for a pro

Comparison of on-line graphs

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