4-Channel Stereo Headphone Amplifier User’s Manual
Introduction The Pearstone four-channel stereo headphone amplifier is a compact and lightweight audio accessory that’s ideal for studio recording, band rehearsals, or any application where multiple headphone connections are needed. The 1/4-inch TRS stereo input accepts any stereo line output. Each of the four stereo 1/4-inch headphone outputs has its own volume control so each user can listen at a comfortable volume.
Overview 1. 2. 3. 4. 5. Volume knobs Power LED 1/4 in. TRS stereo input jack 1/4 in.
Operating Instructions Plug the power cord into the power supply. The headphone amplifier will turn on automatically, and the power LED will glow green as long as the amp is receiving power. Connect the output of your source to the 1/4-inch TRS stereo input jack. Plug up to four headphones into the 1/4-inch TRS stereo headphone output jacks. Adjust the volume with the volume knobs.
Specifications Number of Channels 4 Input Connections Stereo 1/4 in. TRS phone Input Impedance 1000 Ω Output Impedance 10 Ω (min) per output Output Connectors Stereo 1/4 in. (6.35 mm) headphone outputs (×4) Maximum Gain 20 dB per channel Maximum Output Level +22 dB Function Controls Volume knobs (×4) Signal-to-Noise Ratio >98 dB Power Supply Input: 100 to 240 V, 50/60 Hz, 0.2 A Output: 12 V / 500 mA Dimensions (W × D × H) 4.1 × 2.3 × 1.3 in. (10.4 × 5.8 × 3.3 cm) Weight 8.4 oz.
Troubleshooting 6 Problem Solution The source is playing, but there’s no sound in the headphones. • Make sure all headphones are completely plugged in. • Make sure the volume levels are turned up. • Make sure the amplifier is receiving an input signal. The LED light is not lit. Make sure the 12 V DC adapter is plugged into the outlet, and the connector is completely inserted into the power supply on the headphone amplifier. There’s noise or a hum in the headphones.
Three-Year Limited Warranty This Pearstone product is warranted to the original purchaser to be free from defects in materials and workmanship under normal consumer use for a period of three (3) year from the original purchase date or thirty (30) days after replacement, whichever occurs later.
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