Satri Circuit Laboratory VHA-5240A Headphone Amplifier for VR

The VHA-5240A is a headphone amplifier developed for VR goggles, which now allow you to easily enjoy 3D visuals.

By increasing the amount of auditory information and improving precision in the world of Virtual Reality (VR), VR viewing becomes even more realistic. It accurately reproduces surround sound without any time lag. The flat phase characteristics, which emphasize the localization of binaural recordings used in VR, clearly reproduce direction and distance, adding even more realism to the virtual world.

Depending on the model of VR goggles, the earphone output may be stereo or separate mono channels for left and right. To accommodate both types, the amplifier is equipped with stereo input/output as well as separate mono input/output for left and right channels. The case uses a conductive carbon-mixed filament to prevent induction noise.
Moreover, its compact and lightweight design allows you to easily carry it in a bag or pocket, so you can enjoy it as a portable headphone amplifier.

From the virtual world to the real world

The built-in amplifier in VR goggles places a load on the use of earphones. The greater the load, the more adverse effects occur, such as increased distortion, degraded transient response, and longer delay times. The VHA-5240A precisely controls the bias current to maximize the amount of information and improve accuracy. Furthermore, by expanding the bandwidth and using a non-feedback circuit without negative feedback, it eliminates transient distortions such as TIM distortion and minimizes delay time to the extreme, thereby removing phase distortion and accurately expressing the localization of surround sound. As a result, when the VHA-5240A is connected to the earphone output of the goggles, the load during earphone use is reduced to about 1/100 to 1/300, preventing deterioration in performance. It extracts a pure signal without performance degradation and drives earphones with a precise driver circuit. This allows the accurate reproduction of phase and timing information necessary for VR, making it possible to realistically recreate the world of virtual reality.

*The product does not include accessories such as cables. Please prepare the power supply and cables yourself.

Ultimate Localization and Spatial Reproduction for VR

• "The sound image is astonishingly sharply localized, and the source of the sound is clearly identifiable."
  Thanks to the high-speed response and excellent phase characteristics of the SATRI circuit, it is surprisingly easy to identify exactly where the sound is coming from within the space.
  The movement and positional relationships of sounds in the VR space can be clearly understood, dramatically enhancing immersion and realism.
  
• "The sound field expands naturally without any unnaturalness, greatly increasing the realism of the virtual space."
  It reproduces a vast and deep soundstage that is difficult to achieve with conventional headphone amplifiers. Many users report that the scale and depth of the virtual space are naturally represented and that they can feel the sound fully filling the space.
  

Speed and Resolution with SATRI Circuit

• "The attack and decay of the sound are as fast as lightning. Music and sound effects come to life."
  The SATRI circuit, using current transmission, maximizes transient response. There is no delay or muddiness in the sound, allowing sound effects and music to be reproduced vividly, powerfully, and dynamically.
  
• "The noise floor is extremely low, allowing even the finest details to be heard clearly."
  Thanks to its low-noise design, the background silence is deep and expansive, emphasizing the low noise floor. Even micro-details, such as environmental sounds in VR, rustling clothes, or distant noises, are accurately and clearly rendered.
  

Evaluation for regular listening

• "Even for music listening, it provides sufficient transparency and resolution as a reference device."
  The accuracy cultivated for VR is equally reflected in music playback. With a neutral, uncolored sound, it maximizes the information content of audio sources, demonstrating high performance as a high-end audio amplifier.