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【Operation Confirmed】Fostex HP-A4 DAC/Headphone Amplifier with Box and Manual
Product Details
【About the Product】
This is the FOSTEX HP-A4, a classic USB DAC / Headphone Amplifier that boasts enduring popularity among audio enthusiasts.
Simply connect it to your PC to enjoy high-resolution audio sources with overwhelmingly superior sound quality.
【Main Features】
High-Resolution Support: Supports up to DSD 5.6MHz / PCM 192kHz.
USB Bus Power Drive: Operates using power supplied from your PC, eliminating the need for an AC adapter and keeping your desk clutter-free.
High-Quality Parts: Features carefully selected capacitors and operational amplifiers for clear and powerful sound.
【Condition】
Operation: Sound output confirmed via PC connection. All switches and the volume control are in good condition with no crackling or other issues.
Exterior: The unit is in beautiful condition with no noticeable damage overall. Please only purchase if you understand that this is a used item.
【Accessories】 (Everything shown in the photos is included)
Outer box
Instruction manual
USB cable
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.











