Measurement's report Walnut V3 Unbalance - Reference Audio Analyzer

Reports / Walnut / V3 / Unbalance / A set of device tests as a headphone amplifier - report for a pro

Test report Walnut V3: Unbalance (report for a pro)

About this report
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 Walnut V3 Unbalance

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".

Test report - general data Walnut V3 (as headphone amplifier)

Frequency response, Impedance and Frequency response with standard headphones

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Voltage levels from the load at the output of the amplifier

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Average value of impedance band in 40 Hz - 15 kHz97.9ohm
Voltage:
Pure or equal class A / Maximum or before clipping level
10.6/10.6dBV
3.4/3.4VRMS
Current:
Pure or equal class A / Maximum or before clipping level
10.8/13.5dB(mA)
3.5/4.7mA






Frequency response Walnut V3 Unbalance (as headphone amplifier)

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Channel

Range

Channel:LeftRight
Variation in frequency response in band from 40 Hz - 15 kHz -0.7, +0.1-0.7, +0.1dB


Brief information

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



Impedance Walnut V3 Unbalance (as headphone amplifier)

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Channel

Channel:LeftRight
Impedance average in band from 40 Hz - 15 kHz97.4 98.3ohm
The minimum value in band from 40 Hz - 15 kHz97.4 98.3ohm
The maximum value in band from 40 Hz - 15 kHz97.4 98.3ohm


Comparison of basic characteristics AMPs

Brief information

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



Crosstalk Walnut V3 Unbalance (as headphone amplifier)

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Channel

Range

Load

Channel:LeftRight
Crosstalk @ 1 kHz @ 15.8 ohm -65.2 -60.2dB
Crosstalk @ 1 kHz @ 24.5 ohm -68.1 -63.7dB
Crosstalk @ 1 kHz @ 30.5 ohm -69.7 -64.9dB
Crosstalk @ 1 kHz @ 62.4 ohm -68.9 -68.1dB
Crosstalk @ 1 kHz @ 100.0 ohm -77.6 -70.5dB
Crosstalk @ 1 kHz @ 198.9 ohm -74.0 -73.2dB
Crosstalk @ 1 kHz @ 300.0 ohm -74.3 -74.8dB
Crosstalk @ 1 kHz @ 763.0 ohm -79.1 -79.7dB
Crosstalk @ 1 kHz @ Not loaded-80.2 -79.8dB


Brief information

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



Crosstalk Phase Walnut V3 Unbalance (as headphone amplifier)

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Channel

Load



Brief information

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



Frequency response Walnut V3 Unbalance with resistive load

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Channel

Range

Frequency response of amplifier with resistive load @ 40 Hz - 15 kHz
Channel:LeftRight
HP 16 Ω + Walnut V3 Unbalance 0.20.2dB
HP 32 Ω + Walnut V3 Unbalance 0.10.1dB
HP 64 Ω + Walnut V3 Unbalance 0.10.1dB
HP 126 Ω + Walnut V3 Unbalance 0.10.1dB
HP 256 Ω + Walnut V3 Unbalance 0.10.1dB
HP 512 Ω + Walnut V3 Unbalance 0.00.0dB


Brief information

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



Frequency response Walnut V3 Unbalance loaded dynamic headphone type

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Channel

Range

Frequency response of amplifier loaded dynamic headphone type @ 40 Hz - 15 kHz
Channel:LeftRight
HP 10000 Ω + Walnut V3 Unbalance 0.00.0dB
Grado GH4 Limited Edition + Walnut V3 Unbalance 7.26.8dB


Brief information

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



Frequency response Walnut V3 Unbalance loaded type balance armature headphone type

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Channel

Range

Frequency response of amplifier loaded type balance armature headphone type @ 40 Hz - 15 kHz
Channel:LeftRight
HP 10000 Ω + Walnut V3 Unbalance 0.00.0dB
Campfire Audio Andromeda + Walnut V3 Unbalance 15.415.5dB
Fearless Audio S8F Freedom + Walnut V3 Unbalance 11.510.7dB


Brief information

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



THD vs load vs output voltage Walnut V3 Unbalance

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Channel

Load

Harmonic, number

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Channel

Load

Harmonic, number

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Channel

Load

Brief information

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



Maximum voltage output level vs load Walnut V3 Unbalance

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Type of chart

RAW coordinates

Power characteristics of the Voltage Current
dBVVRMSdB(mA)mA
Equivalent class A 10.63.410.83.5
Equivalent class AB 10.63.412.14.0
Equivalent class B 10.63.413.34.6
Maximum mode 10.63.413.54.7


Volume Control TypeDigital
Optimal range of volume control36.0dB
Signal/Noise / Maximum106.0/10.6dB/dBV
Signal/Noise @ -14.9 dBV 32 ohm (1 mW)92.64dB
Signal/Noise @ -5.2 dBV 300 ohm (1 mW)92.64dB


Comparison Walnut V3 Unbalance and another amplifiers by loudness (Volume Level)

Main characteristics of the Walnut V3 Unbalance

Brief information

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



Maximum voltage output level vs load Walnut V3 Unbalance

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