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Kingsound KS-H3 Electrostatic Headphone & M10 Headphone Amp Combo

The KS-H3 headphones have a new, improved headband, drivers, and a superior sound than the original, KS-H1. RETAIL: $1,250.


How do electrostatic headphones work?
The electrostatic loudspeaker is very simple in concept, but difficult to construct successfully in practice. lts operation relies on electrostatic attraction and repulsion, in much the same way as a piece of thin paper attracted to a rubber balloon that is charged by rubbing it against fabric.

The electrically charged ultra-thin conductive film diaphragm is tensioned and placed close between two metal grids. When a high voltage audio signal is applied to the metal grids, the diaphragm moves in response to the signal, moving towards the grid which at that instant is oppositely charged, and away from the grid which has the same charge as the diaphragm. The diaphragm responds in an essentially linear manner, producing sound waves which are a very accurate reproduction of the original sound.

Why is electrostatic better?
Imagine a normal speaker as a point source, from which the sound waves produced diffract at a great angle. This causes rapid decrease in volume and quality over a short distance.

Then imagine a flat electrostatic panel producing sound from the same input signal. This time the sound waves are produced over a large, flat area, therefore have very little diffraction and the volume decreases much less over the same distance.

Frequency Response 6Hz - 46KHz
Electrostatic Capacity 140pF
Impedence 113kΩ (at 10kHz)
Sensitivity 109 dB (at 100vrms)
Maximum Output Sound Level 116dB
Standard Bias Voltage 550Vdc
Weight 0.46kg

The KingSound M-10 Headphone amp provides high quality amplification for the KingSound KS-H1, KS-H2 and KS-H3 along with providing the high voltage bias for the electrostatic panels.

The amp provides a 580v Bias that will work with both Stax Electrostatic Headphones as well as the KingSound Headphones. The Amp has 2 inputs on the rear.

Volume Control

Bass Control; Direct or Extra Bass

Headphone Output

On/Off Switch

3.5mm Input

RCA Input

RCA Output (Connected in Parallel w/ the RCA Inputs Internally)

110/220 Voltage Selector

Mains Power Input

Input Voltage: AC 100-240V, 50/60Hz

Power Consumption : <50W

Frequency response: 1Hz – 50 KHz (-3dB at 50V RMS out)

Gain: 58dB

Harmonic distortion: 0.04% (at 100 vrms/ 1khz output)

Input Impedance: 24KOhm

Rated input level: 0.15V (100V output)

Maximum output voltage : > 300V rms (<1%THD)

Signal to noise ratio: > 100dB (re. 100V output A-weighted)

Bass Boost: +9dB at 20 Hz, + 3dB at 100 Hz

EH Bias voltage output: 580 Vdc

Dimensions: 170 (W) x 265(H) x 60(D) mm

Weight: 2.3kg

Warranty period: 12 months