Fluance
⏳Price
$105.62
Fosi Audio BOX X4 Phono Preamp Headphone Amplifier/Preamplifier Hi-Fi Pre Amp with JAN 5725W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control
★★★★★
$105.62
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1
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About this item
- Pro-Grade MM Phono Stage with Grounding Terminal: Upgraded from BOX X2, the BOX X4 delivers audiophile-grade clarity for your turntable. Features a low-noise JAN 5725W vacuum tube preamp with MM input and built-in earth terminal to eliminate hum and protect vinyl systems. Ensure your turntable’s internal preamp is disabled for pure analog playback.
- Dual-Output Flexibility--Preamp + Headphone Amp：Switch seamlessly between RCA line-level output for amplifiers and 3.5mm headphone output for private listening. Engineered to drive most headphones, ideal for late-night vinyl sessions without disturbing others.
- Tube Rolling Flexibility for Custom Sound：Unlock endless audio personalities! Swap stock JAN 5725W tubes with 6K4/6J1/GE5654/6AK5 tubes (sold separately). A DIY haven for vinyl enthusiasts.
- Active Bass & Treble Controls for Vinyl Optimization：Fine-tune your records with ±10dB bass/treble EQ – boost warmth for vintage LPs or sharpen detail for modern pressings. Paired with low-noise circuitry to preserve original analog character.
- Complete Kit with Extended Warranty：Includes BOX X4 phono preamp, DC 12V power supply, user manual, our worry-free 24-month warranty, and friendly customer service.
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Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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