Stax SR-L700 MKII Earspeaker | Advanced-Lambda series


Stefan says:

The SR-L700 MKII is the culmination of decades of development of the LAMBDA concept – and really takes it to the Level where I thought they couldn’t take it!

You have to hear this on the Audiovalve Tube Amps!


Stax says:

The MK2 models have adopted the cable-exchangeable structure as well as the case holder made from aluminum aiming at user-friendliness and wearing comfort when listening to music.

Exchangeable cable structure
The exchangeable cable structure of recent trend for high-quality headphone has been employed. This enables the prospective correspondence to a high-definition cable, and the easy maintenance to sudden disconnection, thus improving the user-friendliness of earspeaker.

Case holder made from aluminum

The change of material has enabled the mechanism design with more high flexibility. In the MK2 models, changing the case holder design from conventional linear style into moderate curve form produces the effect that ear pads fit more naturally on both-sides-of-the-head part. Moreover, the curve form gives high rigidity and prevents from generating unnecessary distortion or twist at the time of wearing, resulting in the great improvement of fit feeling. In an open-air type earspeaker, the degree rise of adhesion at the time of wearing greatly contributes to the improvement of low-frequency reproduction.


Fixed electrode: MLER (Multi Layer Electrodes)
Attached cable conductor: 6N(99.9999%)OFC + silver plated annealed copper wire
Ear pad: genuine sheep leather (skin touching portion), artificial leather (surrounding portion)
Weight: 371g、508g (including cable)
Type: push-pull electrostatic sound element, open-air type enclosure
Sound element shape: oval
Frequency response: 7 – 41,000Hz
Electrostatic capacitance: 110pF
Impedance: 145k Ω
Sound pressure sensitivity: 101dB
Bias voltage: 580V DC
Cable: parallel 6-strand, low-capacity wide cable
Cable length: 2.5m full length