Overview: The Pro-Ject Head Box II headphone amplifier is a compact
audio amplifier designed particularly to drive headphones. The external headphone
amplifier allows for higher possible volumes and greater audio clarity than the
smaller, inexpensive integrated headphone amplifiers that are used in most of
today's home receivers or audio players. The
Pro-Ject headphone amplifier connects to a line-level (RCA-type) input & output of
receiver or directly to the line-level (RCA-type) output of your audio source.
Note: Available with a black or silver front-panel.
Construction: The Pro-Ject Head Box II headphone amplifier employs a
metal case to shields the circuitry from vibration and electromagnetic
RCA Input/Output: The Pro-Ject Head Box II headphone amplifier features
gold-plated stereo input and output RCA phono jacks. The headphone amplifier's
connects to your AV receiver's Tape monitor or CD-R/DVR inputs & outputs. It can
also connect directly to your audio source's (CD player, Tape, Turntable) audio
Headphone Output: The Pro-Ject Head Box II headphone amplifier is
equipped with a front-panel 1/4" headphone jack to plug in your headphones.
Volume Control: The Pro-Ject Head Box II headphone amplifier features
a front-panel rotary volume knob to control the volume level of your connected
Power Requirements: The Pro-Ject Head Box II headphone amplifier
operates off of standard household current using the included oversized outboard
Headphone Jack: 3-pole, 1/4"
Power Output: 330mV / 30-ohms, 60mV / 300-ohms
Input Impedance: 47 kOhms
Signal-to-Noise Ratio: 94 ref. full output (112dB-A weighted), 3W
power consumption max.
Frequency Response: 30Hz-20kHz (+/-0.05dB), 10Hz-120kHz (-1dB)
Power Consumption: 16V / 120mA AC
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