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General| Brand | Fosi Audio |
|---|---|
| Model | BOX X4 |
| Category | Amplifier |
| Language | English |
Details the available input and output connections for the BOX X4.
Lists power requirements, headphone compatibility, and audio performance metrics.
Identifies and explains the function of front panel controls like headphone output and knobs.
Details the various input, output, and grounding ports located on the back panel.
Instructions for installing the 5654W vacuum tubes into the BOX X4 unit.
Guidance on connecting speakers via RCA or headphones via the 3.5mm output.
Instructions for connecting audio sources like turntables or AUX devices.
Steps for safely connecting power, turning on the unit, and recommended power-on sequence.
Solutions for common noise or humming issues encountered when the BOX X4 is on.
Troubleshooting steps for scenarios with no audio output despite connected cables.
Explains how to switch between inputs and distinguish power/volume controls.
Answers regarding turntable ground wires and connection methods.
Information on connecting to power amplifiers, headphones, speakers, and subwoofers.
Tips for improving sound quality and information on compatible vacuum tube substitutions.
Provides information on the 18-month limited warranty for Fosi Audio products.
Overview of Fosi Audio's design philosophy and product offerings.
Lists website, social media, and email addresses for customer support.
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