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Wednesday, June 1, 2016

STAX SR-404 Signature (over-ear headphones)

Measurement


STAX SR-404

• STAX earspeakers
• Electrostatic headphones
• Dedicated amplifier needed


STAX SR-404 measurement


Check the Measurement Procedures first.

[1. Frequency Response ]
Uncompensated


Uncompensated


Diffuse Field Target Compensated


Olive Welti Target Compensated


Harman Target Compensated


CSD



[2. Square Wave ]
30 Hz

300 Hz



[3. Minimum Phase ]


[4. Harmonic Distortions ]
94 dB SPL @ 500 Hz



[5. Sound Leakage ]

Earpads of STAX SR-404 are too large to cover the ears fully, so these inevitably have sound leakage through the gap under the earpads. The amount of leakage would vary from person to person.
Uncompensated




[6. STAX ED-1 Monitor ]

STAX ED-1 Monitor is dedicated headphone amplifier, which has built-in Diffuse Field compensator for STAX headphones.
Frequency Response of STAX ED-1 Monitor


Uncompensated

Black: General STAX SR-404
Orange: SR 404 with ED-1 Monitor


Uncompensated

STAX SR-404 with ED-1 Monitor


Diffuse Field Target Compensated

STAX SR404 with ED1 Monitor


Olive Welti Target Compensated

STAX SR-404 with ED-1 Monitor


Harman Target Compensated

STAX SR-404 with ED 1 Monitor



[7. Comparison ]
Uncompensated

Black: STAX SR-404 with ED-1 Monitor
Orange: Sennheiser HD 600


Uncompensated

Black: STAX SR-404 with ED-1 Monitor
Orange: Sennheiser HD 530 II


Uncompensated

Black: STAX SR-404
Orange: Audeze EL-8 Open-back (early ver. )



[8. Detailed FR plots ]
Uncompensated





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