Fosi Audio Box X5 Phono Preamp for Turntable - Fosi Audio
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer
Fosi Audio Box X5 Phono Preamplifer

Fosi Audio Box X5 Phono Preamplifer

販売価格$104.99通常価格 $109.99

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Review Videos

Can This Cheap Preamp Actually Cover My Needs? Fosi Box X5 Review

Matt Coykendall

Is it Worth the Hype? New Standard in Phono Preamps?

Sound Matters

Is This The BEST First AUDIOPHILE UPGRADE For YOUR TURNTABLE?

United States of Analog

The Amazing $109.99 Fosi Audio Box X5 Phono Preamp.

My Own Devices Audio Channel

Fosi Audio Box X5 Phono Pre Amp • Secret Upgrade?

Pieces of Vinyl

Can This Cheap Preamp Actually Cover My Needs? Fosi Box X5 Review

Matt Coykendall

Is it Worth the Hype? New Standard in Phono Preamps?

Sound Matters

Is This The BEST First AUDIOPHILE UPGRADE For YOUR TURNTABLE?

United States of Analog

The Amazing $109.99 Fosi Audio Box X5 Phono Preamp.

My Own Devices Audio Channel

Fosi Audio Box X5 Phono Pre Amp • Secret Upgrade?

Pieces of Vinyl

Embracethe Vintage Charm of Vinyl with Modern Precision

Supporting MM/MC cartridges, BOX X5 is compatible with most turntables, along with 4 adjustable gain levels of 38/48/56/66 dB. It utilizes high-precision capacitors and resistors, ensuring minimal noise for audio purity. Intuitive RCA terminals achieve a plug-and-play experience.

  • Input: MM/MC RCA; Output: RCASNR≥92dB; THD≤0.009%
  • Frequency Response: 20Hz-20kHz(±0.015dB)

Product details

Description
  • High Performance: The BOX X5 phono preamp is compatible with both MM and MC cartridges, featuring 4 gain settings and an excellent precise RIAA equalization to provide a clean, direct pass-through of a signal when paired with your turntable

  • Audiophile-Grade Components: This preamp utilizes a variety of materials such as 2% Precision Polyester Film Capacitors, Green Sleeve Copper Lead Audio Capacitors, 0.1% High-Precision Film Resistors, OPA1612 Op-Amp, Gold-Plated RCA Jacks, and more. It picks up subtle and finite detail produced from it and delivers a truly warm and inviting sound

  • Multiple Gain Settings: With 4-Level gain adjustment Asettings of 38/48/56/66dB, the preamplifier accommodates both MM & MC cartridge types, meeting a variety of needs. This enhances your phono stage and helps in rebuilding the vintage stereo sound

  • Mini and Exquisite: It's built around a minimalist yet functional design featuring an all-aluminum alloy chassis. When paired with the V3 stereo amplifier, the BOX X5 can bring out the best in your vinyl playback, enhancing its frequency response and dynamic performance

  • User Friendly Design: It has an easy-to-use one-touch power button, gain control, and a convenient toggle switch to switch between MC and MM cartridges. In addition, the grounding port ensures that the connection is secure
Specifications
  • Input Mode: MM+MC RCA
  • Output Mode: RCA
  • THD: ≤0.009%
  • SNR: ≥ 92dB
  • Device Dimension: 4.1 x 6.5 x 1.4 inches
  • Power Supply: 16V/1A
What‘s in the box？
  • BОX X5 Phono Preamp x 1

  • 16V 1A Power Adapter x 1

Which Product is right for you?

Compare products to find the best one for your needs.

Products Fosi Audio BOX X1-MM Phono Preamp MM Turntable Preamplifier

BOX X1 MM Turntable Phono Preamp

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Input
RCA
Output
Active Speakers + Headphone
Bass & Treble Control
No
SNR
≥ 70dB
THD+N
≤ 0.08%
Power Supply
12V/1.5A
Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier HiFi MM Phonograph Preamplifier for Record Player - Fosi Audio

Box X2 MM Turntable Phono Preamp

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Input
RCA+3.5mm
Output
Active Speakers
Bass & Treble Control
No
SNR
≥ 98dB
THD+N
≤ 0.1%
Power Supply
12V/1.5A
Fosi Audio Box X3 Bluetooth Phono Preamp for Turntable Phonograph Preamplifier With 5725 Vacuum Tube - Fosi Audio

Box X3 Bluetooth Tube Phono Preamp

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Input
Bluetooth + AUx+ RCA
Output
Active speakers
Bass & Treble Control
Yes
SNR
≥ 70dB
THD+N
≤ 0.1%
Power Supply
12V/1.5A
Phono Preamp & Headphone Amplifier with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Preamplifier for Record Player with Volume Bass Treble Control Hi-Fi Pre Amp Fosi Audio Box X4

Box X4 MM Turntable Phono Preamp

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Input
RCA+3.5mm AUNo
Output
RCA+3.5mm AUNo
Bass & Treble Control
Yes
SNR
≥70dB
THD+N
≤ 0.1%
Power Supply
12V/1.5A
Products Fosi Audio BOX X1-MM Phono Preamp MM Turntable Preamplifier

BOX X1 MM Turntable Phono Preamp

Learn more
Input
RCA
Output
Active Speakers + Headphone
Bass & Treble Control
No
SNR
≥ 70dB
THD+N
≤ 0.08%
Power Supply
12V/1.5A
Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier HiFi MM Phonograph Preamplifier for Record Player - Fosi Audio

Box X2 MM Turntable Phono Preamp

Learn more
Input
RCA+3.5mm
Output
Active Speakers
Bass & Treble Control
No
SNR
≥ 98dB
THD+N
≤ 0.1%
Power Supply
12V/1.5A
Fosi Audio Box X3 Bluetooth Phono Preamp for Turntable Phonograph Preamplifier With 5725 Vacuum Tube - Fosi Audio

Box X3 Bluetooth Tube Phono Preamp

Learn more
Input
Bluetooth + AUx+ RCA
Output
Active speakers
Bass & Treble Control
Yes
SNR
≥ 70dB
THD+N
≤ 0.1%
Power Supply
12V/1.5A
Phono Preamp & Headphone Amplifier with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Preamplifier for Record Player with Volume Bass Treble Control Hi-Fi Pre Amp Fosi Audio Box X4

Box X4 MM Turntable Phono Preamp

Learn more
Input
RCA+3.5mm AUNo
Output
RCA+3.5mm AUNo
Bass & Treble Control
Yes
SNR
≥70dB
THD+N
≤ 0.1%
Power Supply
12V/1.5A

FAQs

Please read our FAQs page to find out more.

Is it mandatory to connect the turntable’s ground wire to the BOX X5’s ground terminal?

Grounding is recommended to avoid rattling during use.

Can the BOX X5 be used as a regular preamp?

The BOX X5 is a phono preamp with a higher amplification gain than a regular preamp, thus it is not suitable for use as a standard preamp.

How to power on and off to prevent any thumping sounds that could damage the equipment?

Power On: Turn on the turntable, then the BOX X5, followed by the amplifier.

Power Off: Turn off the amplifier, then the BOX X5, and finally the amplifier.

What power supply is used for the BOX X5？

The BOX X5 is powered by its supplied AC adapter, not a DC power supply. DC power supply filters cannot be used for AC power supply.

Customer Reviews

Based on 42 reviews
90%
(38)
2%
(1)
0%
(0)
2%
(1)
5%
(2)
92.7
92.7
f
frank rango
It works very well

I was using an old 80's receiver as a RIAA eq/preamp. Fosi unit was a big improvement for an extremely reasonable price

P
Patrol
Phono preamp Fosi Audio Box X5

A very good product that outclasses the more expensive competition. I have a Project Debut Pro S turntable and I compared the Box X5 directly with the ifi Zen Phono V2. Fosi gave more space, nice bass, so it stayed with me for longer. I didn't need a subsonic filter. As for the noise, it will appear only at an extreme volume level, close to the maximum, so it's a negligible issue (with the ifi Zen there was no noise at max vol). Finally, I'll add that Fosi support works very well.

S
Steven
Buyer beware

Fosi Audio does not honor their return policy. The noise floor on this unit is way too high. I've been trying to return the item for a month now and customer service is impossible to work with. Ive opened up multiple help tickets and they stop replying after they ask for me to send videos.

L
Leonidas Karantzas
Fosi Audio Box X5 Phono Preamp

Great preamp. Definitely worth the price, sounds much better than what it's price might suggest.
Build quality is great, metal case feels definitely better than the plastic case many phono preamps at a similar price have.
I do not have another preamp available to compare, but hearing the same music from digital source, on the same system, does not have the same amount of detail, and as good soundstage. Can't really say how much of the difference is because of my new Rega planar 3 turntable, and how much is coming from the X5, but I am really happy I bought this.
Unfortunately I had to wait a bit more to use it, because the power supply that came with it was faulty, so I had to wait for a replacement, but the tech support was great, so no complaints there.
Can;t wait to hear this preamp after upgrading the speakers and the power amp.

S
S R
Very good for turntable

If you're looking for a good phono amp, look no more.

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