Power Supply requirements. The power supply may vary depending on country of use. No expense has been spared to enable the OBH-11 headphone amp to faithfully reproduce a music signal. Only the highest quality components are used in its classic amplifier circuitry, to achieve low distortion and noise, with good stereo separation. Great care has also been taken to match the output circuitry to the special requirements of modern dynamic headphones, providing an extremely flat frequency response.
Audio bandwidth is limited by input and output coupling capacitors to prevent unwanted signals.
The purpose is to eliminate the use of a full size amplifier for boosting the power, if only headphones are used. The volume control on the front panel is designed to control the output level. The OBH-11SE has been designed with zero feedback and is fully Class A for improved performance. No expense has been spared to enable the OBH-11SE headphone amp to faithfully reproduce a music signal. Only the highest quality components are used in its unique amplifier circuitry, to achieve low distortion and noise, with good stereo separation, including Alps Blue Velvet volume potentiometer.