This is a Full Separate Pure Class A headphone amp. the circuit is base on the famous HA5000. the sound is very Excellent!!

Using Toshiba 2SK370 FET as a single differential input, sound is very delicate, K2955 J554 power FET as the output, low frequency is very full, very flexible.

On the amp Board with a gain switch, you can set the magnification depending on headset.

Works voltage: AC 115V or 230V (Optional)

Load impedance 16-600 Ohm

Sensitivity of 1.1 V / 50,000 ohms

Maximum output power

2,400 mW + 2,400 mW (16 ohm load)

1,200 mW + 1,200 mW (32 ohm load)

600 mW + 600 mW (64 ohm load)

65 mW + 65 mW (600 ohm load)

Input impedance: 47KOhm

Frequency characteristics: 10Hz - 35kHz

Signal ratio for noise: >90dB @ Gain 6dB

Output impedance: line output 0.2 Ohms

Frequency Response 5 ~ 200,000 Hz

Size:155mm*60mm*265mm (W*H*D)

Packaging includes:

HA5000 Class A Headphone amplifier                          X1

NOTE: We do not provide any cables.