My turntable has a built-in phono preamp. How do I connect it to the BOX X2?

• If the turntable has a built-in phono preamp, switch it to "Line Out" mode and connect it to the 3.5mm input on the BOX X2. • If the turntable is set to "Phono" mode, connect it to the MM input on the BOX X2 for optimal sound.

Does the BOX X2 have any built-in tone control? Dose the BOX X2 have bluetooth?

No. The BOX X2 don't have bluetooth. And the BOX X2 features gain control, not tone control. For enhanced tonal shaping, consider using models like BOX X4, which includes treble and bass adjustments. For bluetooth consider using models like BOX X3.

How to connect a turntable to the BOX X2 and active speakers?

Make sure the turntable has a Phono output with an MM cartridge. Some turntables have a built-in phono preamplifier, set it to Phono switch.

Can I replace the tubes in the BOX X2?

You can substitute with 7-pin tubes such as 6AK5, 6AK5W, 6Zh1P, 6J1, and 6J1P. These can also directly replace WE-403A, WE-403B, EF95, 6A2 tubes, 5725w tubes and standard 5654 tubes.

Turntable has built-in preamp/line switch—Can I still use this instead of my built-in preamp?

Yes, deselect the preamp on your turntable. Note: Please confirm whether your turntable has a built-in phono preamp, if there is a phono preamp, and it cannot be deselected, then you can only connect 3.5 mm input, can not connect MM Turntable input.

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Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Hi-Fi Stereo Audio Pre-Amplifier for Record Player

Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Hi-Fi Stereo Audio Pre-Amplifier for Record Player

Product ID: 467818832

Details

Item dimensions L x W x H
11.8 x 9.8 x
Manufacturer
Fosi Audio
Maximum supply voltage
12 Volts (DC)
Minimum supply voltage
12 Volts (DC)
Voltage
12 Volts (DC)

⚡Low-noise circuitry with grounding post

🔊Tube preamp for warm, smooth sound

🎚️3 gain modes (39/42/45 dB)

S/.517

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Description

🎵 Elevate your vinyl vibes with tube-powered warmth and precision!

NOISE FREE LISTENING - Advanced low-noise circuits and grounding post eliminate hum and interference.
COMPLETE HI FI PACKAGE - Includes tubes, RCA cable, power adapter, and 18-month global warranty for peace of mind.
WARM ANALOG TUBE SOUND - Experience rich, smooth audio with high-quality vacuum tube amplification.
CUSTOMIZABLE GAIN CONTROL - Switch between 39, 42, and 45 dB gain for perfect sound tailoring.
DIY SOUND PERSONALIZATION - Easily swap vacuum tubes (6A2/6K4/6J1 etc.) to craft your unique audio signature.

The Fosi Audio Box X2 is a premium MM phono preamp designed to convert turntable signals into crystal-clear line-level output. Featuring three switchable gain modes (39, 42, 45 dB), low-noise integrated circuits, and a grounding post, it ensures pristine sound quality free from hum. Its tube preamplifier design delivers warm, smooth analog audio, with interchangeable vacuum tubes allowing personalized tonal customization. The package includes all essentials plus an 18-month global warranty, making it a top choice for audiophiles seeking affordable high-end sound.

Specifications

ASIN	B07XNTHHBP
Best Sellers Rank	#23,230 in Electronics ( See Top 100 in Electronics ) #4 in Home Audio Preamplifiers
Brand	Fosi Audio
Customer Reviews	4.5 out of 5 stars 3,339 Reviews
Item Weight	0.65 Kilograms
Manufacturer	Fosi Audio
Mfr Part Number	Box X2
Model Number	BoxX2

Reviews

P**N

Zuper

Excellent

5.08.2026

J**Y

Opened up the sound

This perform better than the inbuilt phono stage of the turntable or the onkyo receiver. The voice is warm and pleasent. A good stylus with the phono preamp is a must if you have a turntable.

21.09.2024

M**B

De buizen goed aandrukken als je andere buizen monteert

6.06.2026

A**E

Muito bom!!

Dei mais pontecia na minha agulha!top

2.06.2025

J**D

Fantastic value for money

I have a main valve amplifier and needed a phono pre amp to boost signal from an inherited turntable with MM cartridge. Read reviews and got the fosi audio box x2. Being so relatively cheap I thought it would just ok. How wrong i was it's fantastic. Just on the first gain setting is enough for my main amp and tha output is beautiful. I am not a audiophile but I think 10 out of 10 for what I required.

20.04.2026

A**S

Excellent d'efficacité! Excellente qualité!

Formidable! Son très pur. Qualité supérieure. Efficacité dans les hautes et basses fréquences. C'est celui-ci que je recommanderais!

1.09.2026

R**A

Podobamisie

Działa, dźwięk 👍,rodzinka robi kawał dobrej roboty!

5.07.2026

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S/.517

Duties & taxes included

In stock

Sold byAmazon PeruDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Peru.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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1 week ago

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