Satri Circuit Laboratory VHA-5240A Headphone amplifier for VR

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

VR viewing can be made more realistic by increasing the amount and accuracy of auditory information in the VR (Virtual Reality) world. It reproduces the surround sound used accurately, precisely, and with no time deviation; it clearly reproduces a sense of direction and distance, including the flat phase characteristics that emphasize the localization of binaural recordings used in VR, adding further realism to the world of virtual reality.

Some VR goggle models have stereo earphone outputs and some have separate monaural left and right earphone outputs, so in addition to stereo inputs and outputs, separate left and right monaural inputs and outputs are provided to accommodate each type of goggle. The case is made of conductive carbon mixed filament to prevent inductive noise.
The small size and light weight also make it easy to carry in a bag or pocket as a headphone amplifier.

From the virtual world to the real world

The amplifier built into VR goggles is loaded by the use of earphones. The heavier the load, the worse the distortion, the worse the transient characteristics, and the worse the delay time, etc. The VHA-5240A precisely controls the bias current to maximize the amount of information and increase accuracy. Furthermore, by widening the bandwidth and using a no-feedback circuit that does not apply negative feedback, transient distortion such as TIM distortion is eliminated and time delays are minimized to the limit, thereby eliminating phase distortion and enabling accurate representation of surround sound localization. When the VHA-5240A is connected to the earphone output of goggles, the load when using earphones is reduced by 1/100 to 1/300, preventing deterioration of the characteristics. The VHA-5240A takes out the pure signal with no deterioration of characteristics and drives the earphones with a precise driver circuit. This enables precise reproduction of the phase and time information required for VR and realistic reproduction of the world of virtual reality.

Maximum Output	350mW (1% distortion)
Distortion(1KHz)	1mW: 0.026
S/N Ratio	-110dB(GAIN 1dB)
Frequency Response	5Hz~5MHz(-3db)
Delay Time	18nS(1/100 million of 1.8 sec)
Input impedance	10KΩ
Dimensions	W92x H27x D44mm
Weight	56g
Power source	DC 5V/300mA

*Cables and other accessories are not included with this product. Please provide your own power supply and cables.