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Labels and describes the parts of the HE 1 headphones and amplifier.
Core safety instructions for operating the HE 1 system.
Specific warnings, especially those related to the amplifier's rear panel.
Safety precautions for handling the remote control's lithium battery.
Guidance on preventing hearing damage, accidents, and product malfunctions.
Defines the product's intended use and clarifies Sennheiser's liability.
Information regarding product maintenance, software updates, and original packaging.
Explains the LED indicator and the amplifier's controls (buttons, knobs, switches).
Instructions for placing and ensuring ventilation for the HE 1 amplifier.
Details how to connect various audio sources (analog, digital) to the HE 1.
Instructions for connecting and configuring the HE 1 with macOS and Windows via USB.
Guide on using the HE 1 as a preamplifier for power amplifiers or active loudspeakers.
Instructions for connecting the HE 1 to the electrical power supply.
Procedures for powering the HE 1 on and off, including initialization.
Steps for connecting headphones and properly wearing them for optimal sound.
How to choose the desired audio source using the INPUT rotary switch.
Using the crossfeed feature and selecting audio output destinations.
How to adjust the listening volume for headphones and audio outputs.
Procedures for muting the audio output and canceling the mute function.
Instructions on how to open and close the headphone storage box.
Proper methods for cleaning the HE 1 amplifier and headphones.
Step-by-step guide for replacing ear pads and headband padding.
Guidance on replacing the consumable amplifier tubes.
Steps for replacing the remote control battery and calibrating mechanical components.
How to reset all settings to their original factory defaults.
Guide for updating the DAC firmware using the Sennheiser HE 1 Updater.
Addresses common issues like no audio, connectivity problems, or device unresponsiveness.
Explains the high-voltage protection feature and how to deactivate it.
Detailed technical data for the HE 1 headphones and amplifier.
Specifications for the remote control and the diffuse-field frequency response curve.
Details Sennheiser's warranty policy, regulatory compliance, and declarations.
General| Frequency Response | 8 Hz - 100 kHz |
|---|---|
| Transducer Principle | Electrostatic |
| Ear Coupling | Circumaural |
| Amplifier | Integrated |
| Storage Temperature | -20 °C to +70 °C |
| Total Harmonic Distortion | < 0.01 % at 1 kHz, 100 dB SPL |
| Cable Length | 3 m |
| Connector | Proprietary |
| Amplifier THD | < 0.01 % at 1 kHz, 100 dB SPL |
| Inputs | RCA, XLR |
| Outputs | 6.3 mm headphone jack |
| Power Supply | 100 - 240 V, 50 - 60 Hz |
| Operating Temperature | +10°C to +40°C |
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