Headphone Amplifier
Stax SRM 400S Silver

Product code: 117861
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AED 5,475
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Description

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Description

The SRM-400S model has replaced the basic model SRM-353X. The amplifier is equipped with a more rigid chassis and two inputs - one balanced and one unbalanced, which can be selected using a switch on the back panel. The unbalanced line output allows the amplifier to be connected between the source and the existing preamplifier. The outputs for two pairs of headphones can be used for comparing different models of Stax electrostatic headphones or for group listening. The SRM-400S is equipped with the same transistors as the higher model 700S, as well as separate transformers for the high-voltage and low-voltage parts.

In addition to the normal power transformer for the high-voltage circuit, the SRM-400S is equipped with a new power transformer with a winding for the low-voltage circuit. The low-voltage winding allows for increased energy efficiency and achieves further energy savings and better sound quality than conventional headphones such as the SRM-353X.

The SRM-400S is capable of reproducing high-resolution sound, which is unique to its semiconductor circuitry and dynamic playback in the low range. At the same time, the sound balance is better than that of the SRM-353X. The sound in each range, from low to high, is well harmonized. Not only is the SRM-400S suitable for use with the improved Lambda series, but it is also ideal for upgrading from the entry-level SRS-3100. This model covers a wide range from beginners to intermediate levels among the updated range of headphones.

Features:

  • Discrete circuitry like the 700S
  • Gain of 60 dB
  • Output voltage: 400 V
  • Bias: 580 V
  • New rigid chassis

Package includes:

  • Amplifier
  • Power cable
  • Documentation
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Characteristics

Characteristics

Brand
Impedance, Ohms

No higher than 32 Ohms for smartphone headphones. When using a good player or amplifier, it can be up to 100 Ohms. For stationary models you should coordinate the impedance with the amplifier power

Glossary of terms
50000
Headphone output
5-pin
Output connectors
RCA
The highest frequency, kHz

The upper limit of the frequencies reproduced by the device. The human ear hears the standard frequency range: 20 Hz – 20000 Hz.

Glossary of terms
90
Circuit design
discrete

The circuit with transistors used.

Словарь терминов
Color
Form factor
stationary

For use on a table or in a rack.

Словарь терминов
Input connectors
RCA, XLR
Material
metal
Preamplifier

A preamp is used as a hub to connect other components of the audio system. The preamp can be either integrated, or an autonomous device.

Glossary of terms
yes
Depth, mm
376
Height, mm
102
Width, mm
195
Weight, g
3400
Service life, months
24
Warranty, months
12