INSTRUCTIONS FOR USE Pro-Ject Head Box DS
Dear music lover, thank you for purchasing a PRO-JECT AUDIO headphone amplifier. In order to achieve maximum performance and reliability you should study these instructions for use carefully. ! Warning of a hazard for the user, the unit or possible misuse. Important notice. Safety instructions AC outlet voltages vary from country to country. Before connecting to the mains, make sure that the voltage in your area meets the voltage requirements printed on the power supply.
Mains power connection Connect the low voltage plug from the power supply to the Power 18V power supply to the mains. " socket before connecting the Front panel controls - + Head Box DS ! Please set the volume level to minimum before connecting the headphone. Minimum impedance of the head phone 30ohms. To switch on from standby or to standby will toggle the unit between its fully operational status and standby. Input selector Pressing repeatedly selects the inputs in turns.
Pro-Ject Direct Streaming - Kernel Streaming (Windows XP® operating system only) Normally the audio data that comes from CD gets resampled by the Windows® Kernel Mixer. This conversion process deteriorates the audio performance. 44,1kHz CD device Kernel Mixer resampling to 48kHz 48kHz Sound card Audio output R/L Pro-Ject Direct Streaming allows bit-by-bit processing. This avoids unwanted signal alteration of the original signal through by-passing the Windows® Kernel Mixer of your PC.
Technical specifications Pro-Ject Head Box DS Power output: Headphone connection: Signal to noise: Frequency response: THD: Gain: Headphone jack: Line-level input: Line-level output: A/D-converter: Supported audio format: Sampling rates USB input: Optical input: Coaxial input: USB input: USB signal: Operating systems: Outboard power supply: Power consumption: Dimensions W x H x D (D with sockets): Weight: 350mW/30ohms, 60mW/300ohms > 30ohms 112dB (A weighted) at full output 20Hz - 20kHz/-0,5dB 0,00% 9dB 3-
