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Summary of Contents for Polsen HPA-4X2
- Page 1 HPA-4X2 4-CHANNEL REFERENCE HEADPHONE AMPLIFIER PRODUCT MANUAL...
- Page 2 The ¼-inch TRS and stereo RCA inputs accommodate a wide variety of input sources. Use a smartphone or tablet as your input source by connecting it to the HPA-4X2 with a mini plug stereo cable (not included) and one of the included mini plug adapters. The mini plug adapters also allow monitoring with...
- Page 3 P R E C A U T I O N S • Please read and follow these instructions, and keep this manual in a safe place. • Exposure to high sound levels can cause permanent hearing loss. Avoid listening at high volumes for extended periods of time.
- Page 4 OV E R V I E W Volume knobs RCA inputs ¼" TRS stereo input jack Power LED ¼" TRS stereo headphone output jacks DC 12V/150mA power supply DC 12V power input 1/8" (3.5 mm) stereo mini to 1/4" TRS stereo adapter (4) Stereo/mono switch...
- Page 5 O P E R AT I NG I N S T R U C T I O N S Connecting an input device Plug the 12V DC power cord into the power supply of the HPA-4X2. The LED will light up. For line level output like a mixer or audio amplifier: Cable needed: ¼"...
- Page 6 Stereo mini to ¼" TRS stereo adapter (included) Connect the mini plug cable to the output of your device. Attach the ¼" TRS –mini plug adapter to the other mini plug, and insert it into the ¼" input jack on the back panel of the HPA-4X2.
- Page 7 Plug the ¼" TRS stereo plug of your headphones into the headphone output jack on the front panel of the HPA-4X2. Adjust the volume of each headphone with the volume knobs. If your headphones have a 3.5 mm mini plug, use the ¼" TRS – mini plug adapter to connect to the headphone outputs of the HPA-4X2.
- Page 8 Stereo/Mono switch: The stereo/mono switch on the rear panel of the HPA-4X2 should be set to the STEREO position for ordinary use. This switch allows you to set the HPA-4X2 for stereo or mono operation. In recording scenarios when content is recorded on two discrete channels, setting the switch to MONO combines the sound of both channels in your headphones.
- Page 9 If using a ¼" stereo TRS for input: Connect the RCA plugs RCA DAISY CHAIN on the back panel of the HPA-4X2 to the input of the daisy-chained headphone amplifier. RCA INPUT If using the RCA jacks for input: Connect the ¼" TRS stereo jack of the HPA-4X2 to the inputs of the daisy-chained headphone amplifier.
- Page 10 S P E C I F I C AT I O N S NUMBER OF CHANNELS 1 x ¼" TRS phono master input 1 x L,R RCA INPUT CONNECTIONS 4 x ¼" TRS phono headphone outputs OUTPUT CONNECTORS +14 dBV MAXIMUM INPUT LEVEL +22 dB per channel MAXIMUM OUTPUT LEVEL...
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Page 11: Troubleshooting
LED light is not lit Make sure the 12V DC adapter is plugged into the outlet, and the connector is completely inserted into the power supply on the back panel of the HPA-4X2. Noise or hum The noise might be coming from a faulty input device. - Page 12 To obtain warranty coverage, contact the Polsen Customer Service Department to obtain a return merchandise authorization (“RMA”) number, and return the defective product to Polsen along with the RMA number and proof of purchase. Shipment of the defective product is at the purchaser’s own risk and expense.
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