[. . . ] Heed all warnings and safety information in these instructions and on the unit. 2. Water and Moisture To reduce the risk of fire or electric shock, do not expose the unit to moisture or water. [. . . ] Non-use periods If the unit is to be left unused for a long period of time, the power cord should be unplugged from the wall outlet. 2 12. Damage Requiring Service Stop using the unit immediately and have it inspected by an authorized music hall service center whenever: 1. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. Getting Started Thank you for purchasing the music hall ph25. 2. The ph25. 2 is a tube headphone amplifier designed for the music lover. We chose a select group of technologically advanced components to create this sophisticated headphone amplifier. A Few Precautions Please read this manual carefully. In addition to installation and operating instructions, it provides valuable information that will help you get optimum performance from your system. Please contact your authorized music hall dealer for answers to your questions. In addition, all of us at music hall welcome your questions and comments. Save the shipping carton and all enclosed packing material for future use. Shipping or moving the unit in anything other than the original packing material may result in severe damage that is not covered by the warranty. It is your best record of the date of purchase, which you will need in the event warranty service is required. Placement Use common sense when placing the ph25. 2. Ensure that there is adequate ventilation around all sides of the unit. Avoid placing the ph25. 2 where it may be subject to excessive heat, such as near a heat register. For best performance, avoid placing the ph25. 2 where it may be subject to vibration, such as near a speaker. 3 Connecting Source Components to the ph25. 2 ANALOG INPUT PRE OUTPUT VOLTAGE SELECTOR L ~115V ~230V CD AUX Designed and developed in the USA The ph25. 2 has 2 inputs: CD and AUX. [. . . ] 330mV Frequency response: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Hz - 20KHz ( 1dB) Noise: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]