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Headphone Driver

Headphone Buffer

The Headphone Buffer is a precision power amplifier capable of delivering up to 1 Watt of power to headphones or other transducers. Capable of driving both high and low impedance loads; this stereo device has a flat frequency response up to 200 kHz, excellent channel separation, and low signal distortion and noise. The inputs feature an AC/DC coupling switch to allow for optional removal of DC offset. The output gain can be set between 0 and -27 dB in 3 dB steps. The outputs include both a stereo headphone jack and Left and Right BNC connectors. A special differential mode of operation provides an additional 6 dB of gain for mono signals.

Part Number: HB7

Technical Specifications:

Input signal range:	+/-10 V peak
Power output:	0.12 W into 4 ohm 0.25 W into 8 ohm 1.0 W into 32 ohm
S/N (typical):	117 dB (20 Hz to 80 kHz at 9.9 V)
Noise floor:	9.2 μV rms
THD (typical):	< 0.0002% (1 kHz tone, +/-7 V peak)
Spectral variation:	< 0.1 dB (10 Hz to 200 kHz)
Input impedance:	10 kohm
Output impedance:	5 ohm
Crosstalk:	<-94 dB (10 Hz - 5 kHz)
Power and communication:	zBus required