Fosi Audio BOX X5: Compact phono preamp for turntables

Fosi Audio BOX X5 is an innovative compact phono preamplifier designed for vinyl enthusiasts, compatible with both MM and MC cartridges. This device features four adjustable gain levels (38/48/56/66 dB) and incorporates precise RIAA equalization, guaranteeing accurate and clear audio reproduction while maintaining the intricate details of vinyl records.

 

Premium-grade components are utilized in the assembly, featuring polymer film capacitors with a precision of 2%, resistors with a deviation of 0.1%, the OPA1612 operational amplifier, and gold-plated RCA connectors. This selection of materials ensures the delivery of a rich, warm sound with exceptional detail.

The compact aluminum alloy chassis boasts a minimalist aesthetic that seamlessly fits into any home audio setup. The BOX X5 is user-friendly: switching between MM and MC cartridges is accomplished via a toggle switch, while the power button and gain control are positioned for easy accessibility. Additionally, a grounding port is included to ensure stable performance.

Fosi Audio BOX X5 specifications:

• Cartridge support: MM/MC
• Input: RCA MM/MC
• Output: RCA
• Gain: 38/48/56/66 dB
• Input impedance: MM – 47 kOhm, MC – 100 Ohm
• Output impedance: 10 kOhm
• Noise level: 37 µV with 38 dB gain and 5 mV input
• Frequency range: 20 Hz – 20 kHz (±0.015 dB)
• Input voltage: AC 16V

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