Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply : �鶹��.ca: Electronics

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Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply

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Item dimensions L x W x H	11.8 x 9.8 x 3.3 Centimetres
Voltage	12 Volts (DC)
Manufacturer	Fosi Audio
Maximum supply voltage	12 Volts
Minimum supply voltage	12 Volts
Brand	Fosi Audio
Number of channels	1
Output power	12 Volts
Package type	box
Specification met	CE

About this item

Tube MM Phono Preamplifier: This Fosi Audio phono preamplifier removes low-frequency noise and ensures clear sound quality by converting phono signals to line-level signals using high-quality components and low-noise integrated circuits. It is designed to safeguard your turntable thanks to its grounding post
3 Switchable Gain Modes: You can switch between 3 modes: 39, 42, or 45 dB. High compatibility and customizable control are provided by the adjustable gain levels. Also, it has very good circuitry and entry-level, high-end analog sound
Tube Preamplifier: With a 3.5mm AUX input, it's also a tube preamp. Fosi Audio used high-quality component parts for the design and assemblage of this phono preamplifier. You can enjoy a very warm and smooth sound
Applicable Vacuum Tube Model: The compatible vacuum tube models are 6K4, 6J1, 6J4, GE5654, 6AK5, 66, etc. To make changes to your stereo system yourself, simply swap out the vacuum tubes. Consider that distinct tubes produce various sounds
Package Content: You will get 1 x Box X2 phono preamp, 2 x vacuum tubes, 1 x RCA cable, 1 x power adaptor, and 1 x user manual

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This item: Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply

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Matched Pair 7-Pin GE JAN 5654W Vacuum Tubes Upgrade for 6AK5/6J1/6Ж1/ EF95/6J1P

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�鶹�� Basics 2 RCA Audio Cable for Amplifier,Active Speakers or Subwoofer with Gold-Plated Plugs, 1.22 m, Black

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Technical Details

Brand	‎Fosi Audio
Manufacturer	‎Fosi Audio
Place of Business	‎ShenZhen city, Guangdong province 518000,CN
Model	‎BoxX2
Model Name	‎Fosi TB10D BT30D BT20A PRO X2 Sound Bar
Part Number	‎Box X2
Tuner Technology	‎DAB
Mounting Hardware	‎Quick Start Guide
Number of Items	‎1
Speaker surround sound channel configuration	‎5 1
Voltage	‎12 Volts (DC)
Power source type	‎AC 110V - 240V
Batteries included	‎No
Batteries Required	‎No
Connector Type	‎RCA
Does it contain liquid?	‎No
Includes rechargable battery	‎No
Manufacturer	‎Fosi Audio
Language	‎English
Item model number	‎BoxX2
Product Dimensions	‎11.84 x 9.78 x 3.28 cm; 308.44 g
ASIN	‎B07XNTHHBP

Additional Information

Date First Available	Oct. 1 2019
Customer Reviews	2,827 ratings 4.5 out of 5 stars
�鶹�� Rank	#4,948 in Electronics (See Top 100 in Electronics) #2 in Audio Component Preamplifiers

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	This Item Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply	Recommendations Fosi Audio Box X1 Phono Preamp for MM Turntable Mini Stereo Audio Hi-Fi Phonograph/Record Player Preamplifier with 3.5MM Headphone and RCA Output with DC 12V Power Supply	�� Fosi Audio BT20A Pro HiFi Amplifier, 300Wx2 Mini Amplifier with Bluetooth 5.0 & TPA3255 Amp chip, Replaceable Op-Amps, Class D Power Amplifier Stereo 2.0 Channel with Bass and Treble Adjustment	�� Fosi Audio Box X4 Phono Preamp with 5725W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control	�� Fosi Audio TB10D 2 Channel Stereo Amplifier, Class D Mini Power Integrated Amplifiers 600W for Passive Speakers/Bass Shaker, Home Audio Component Desktop Amp Receiver TPA3255 with Bass Treble Control	�� MM Phono Preamplifier, Hi-Fi Turntable Preamp for Home Audio/Record Player/Stereo Amplifier/Active Speaker [Nobsound T3]
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Price	-11%��$79.99 Was: $89.99	$41.99	$149.99	$89.99	$109.99	$76.99
Delivery	Get it by Wednesday, Jun 25	Get it by Wednesday, Jun 25	Get it by Wednesday, Jun 25	Get it by Wednesday, Jun 25	Get it by Wednesday, Jun 25	Get it by Wednesday, Jun 25
Customer ratings	4.52,827	4.41,499	4.524	4.2756	4.41,198	4.4199
Sold by	Fosi Audio	Fosi Audio	FosiAudioDirect	Fosi Audio	Fosi Audio	Douk Audio Direct
number of channels	1	1	2	3	2	1
voltage	12 volts of direct current	12 volts	—	12 volts of direct current	230 volts	12 volts
output power	12 volts	—	600 watts	—	600 watts	—
specification met	CE	Riaa	Manufacturer's Quality Standards	FCC	FCC	—
mounting type	—	Freestanding	Freestanding	Door Mount	Tabletop Mount	Surface Mount

From the brand

Amplifying Your Voice, Shaping Our Innovation

Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
Preamplifier & Phono Preamp
Preamplifier & Headphone Amp

Product Description

Fosi Audio BOX X2 Tube MM Phono Preamplifier

Merchant video

Tube MM Phono Preamplifier/Tube Preamp

With RCA and 3.5mm AUX inputs, the BOX X2 offers flexibility to connect with various audio sources, making it a versatile addition to different systems.

Power Adapter: 12V/1A; Adapter Input Voltage Range: AC 110V - 240V
Output Voltage Level: 600 Mv @3mV 1kHz
Frequency Response: Standard RIAA; SNR ≥ 98dB; THD ≤ 0.1%

Clear Sound with Low Noise Circuitry

Enjoy clear and detailed sound with advanced low-noise design, delivering an authentic experience.
4-Level Gain Adjustment for Any Setup

Adjust sound with 4 gain settings for precise customization on any amplifier or speaker setup.
Minimalist Design for Any Space

The BOX X2’s sleek and compact form easily fits into any audio setup, offering style and function.
Replaceable Vacuum Tubes for Unique Tones

Achieve warm, vintage sound or modern, clear tones by replacing vacuum tubes for personalized audio.

Perfect Addition to Your Vinyl Setup

Turn your home into a sound haven with BOX X2, enhancing the sound of your vinyl collection.
Compatible with most MM phono turntables

Easily connects to MM phono turntables, offering a variety of choices for vinyl equipment.
Enhance Focus with Clear, Crisp Sound

Enjoy better audio quality in your workspace, helping you focus on tasks or relax with music.
3.5mm AUX Input for Easy Connections

Easily connect your phone, tablet, or other devices via the 3.5mm AUX input for more audio options.

RCA for MM Turntable Preamp

Ideal for MM cartridges, this mini preamp features precise RIAA equalization and low noise. It includes stereo RCA inputs and outputs.

AUX for Tube Preamplifier

Audiophile-grade amplification with low-noise operational preamps, plus a tube preamp and 3.5mm AUX input. Crafted from high-quality components.

Elegant Vacuum Tube Design

The visible vacuum tubes give a retro aesthetic while offering enhanced sound quality.

Circuit Board Layout

The circuitry is meticulously arranged to minimize interference and maximize sound quality.

Product Comparison

	BOX X2	BOX X1	BOX X3 Buying Options	BOX X4	BOX X5	P3 Buying Options	GR40 Buying Options
Customer Reviews	2,827	1,499	—	756	81	—	14
Type	Phono Preamp with Vacumm Tubes	Phono Preamp	Phono Preamp with Vacumm Tubes	Phono Preamp with Vacumm Tubes	Phono Preamp	Headphone Amp +Preamp	Headphone Amp+DAC Tube Preamp
Input	RCA+3.5mm AUX	RCA	Bluetooth + AUX + RCA	RCA+3.5mm AUX	MM+MC RCA	Bluetooth + RCA	Bluetooth+USB+Optical+Coaxial
Output	RCA	RCA + Headphone	RCA	RCA+3.5mm AUX	RCA	RCA + 3.5mm Headphone + AUX	RCA + 3.5mm Headphone
Treble & Bass Control	✘	✘	✔	✔	✔	✔	✔
THD	≤ 0.1%	≤ 0.08%	≤ 0.1%	≤ 0.1%	≤0.009%	≤ 0.02%	＜0.03%
SNR	≥ 98dB	≥ 70dB	≥ 70dB	≥ 70dB	≥ 92dB	≥103��	≥103��
Power Adapter	12V/1.5A	12V/1.5A	12V/1.5A	12V/1.5A	AC 16V	12V/1.5A	12V/1.5A
Work Voltage	AC 110V - 240V	AC 110V - 240V	AC 110V - 240V	AC 110V - 240V	AC 16V	AC 110V - 240V	AC 110V - 240V

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Customer reviews

2,827 global ratings

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Customers say

Customers like the sound quality, performance, and appearance of the electronic component amplifier. They mention it has a wider sound stage, works extremely well, and doesn't feel cheap. Customers also appreciate the ease of use, saying it's easy plug and play, and has a simple straightforward connection. They also like the tone, compactness, and gain control.

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Sound quality Performance Effectiveness Appearance Ease of use Tone Compact Gain control

108 customers mention "Sound quality"92 positive16 negative

Customers are satisfied with the sound quality of the product. They mention it's amazing, warm, and detailed. They also appreciate the wider sound stage, no hum at very high output levels, and preset decibel actuation. Customers say they can finally listen to vinyl again, saying the crackling/static noises totally vanished.

"...I don't have the unit grounded but have not noticed any unwanted noise. No hesitation recommending this!" Read more

"Surprisingly great sounding preamp. Better than the built in phono preamp stage in my Onkyo receiver (tx-nr747)...." Read more

"...Records sound crisper, better bass response, more lively sound (I keep mine at 39dB). - The Gain dB selector switch is a nice touch...." Read more

"...It sounds much more detailed and punchier than the phono stage built into my CA AXR100 integrated amplifier...." Read more

71 customers mention "Performance"66 positive5 negative

Customers are satisfied with the performance of the product. They mention it works extremely well, gets the job done, and is a great little starter piece of gear. Some say it creates much more depth and sound quality. They also say it's a good addition to any vinyl enthusiast looking for that tube sound.

"...Overall, I'm happy with this and it's a definite increase in quality over a thin-sounding bare-minimum phono-preamp...." Read more

"Works beautifully. What a warm tone. I can finally listen to my vinyl collection again." Read more

"I’ve had this preamp for over a year now. I’m still beyond happy with its performance. If anything, it sounds even better now than it did new...." Read more

"It works extremely well. I’m running a 1984 Technics SL-3 with a pair of KRK 6 studio monitors with a presonus bt monitor controller...." Read more

42 customers mention "Effectiveness"37 positive5 negative

Customers are satisfied with the effectiveness of the product. They mention it's a nice solid phono tube preamp that doesn't feel cheap. Some say it works great and is a fantastic entry-level preamp.

"Nice preamp. I did the tube upgrade to GE 5654W. The three-stage dial would have been better as a dial log pot for more precise output...." Read more

"...tried this with all three of my home systems, which are of a high vintage quality...." Read more

"High quality. Works like a dream." Read more

"Fantastic entry level preamp I have Denon avr-x4800h Audio technica 120 Kef surround speakers..." Read more

24 customers mention "Appearance"24 positive0 negative

Customers like the appearance of the product. They mention it's nice-looking, has a warm color, and the LEDs make it pretty.

"I like it, looks cool and does the job. 4 stars because it stays warm even when turned off for some reason. I like my electronics cool buddy...." Read more

"...Quality built! Doesn't feel cheap by any means! The blue lights from the tubes look nice too! :)" Read more

"...Now I'm enjoying the nice warm colour of this amp and rediscovering a lot of old vinyl that I forgot I owned." Read more

"...Every vinyl I spin sounds warm and sweet. I ordered the recommended GE 5654W tubes and I lost it...." Read more

16 customers mention "Ease of use"16 positive0 negative

Customers like the ease of use of the product. They mention it's easy to plug and play, has a simple straightforward connection, and the gain option is great.

"...Simple straight forward connection, using stock tubes that came with the package, and WHAT a difference it MADE!..." Read more

"...Very easy to unpack and assemble: the tubes sit very tight in their socket, and some caution must be exercised to align the pins correctly...." Read more

"...set up was easy peasy; it took literally two shakes of a lambs tail & that’s screams volumes because me smort like bricks..." Read more

"...Arrived nicely packaged with easy-to-read instructions to set up. The case, switches, and jacks are well made and the finish is of good quality...." Read more

8 customers mention "Tone"8 positive0 negative

Customers like the tone of the electronic component amplifier. They mention it has a warm tone at a reasonable price and stays warm even when turned off.

"...Clear, dynamic, warm and less digital sounding. What else can I say, I love this little preamp...." Read more

"...Digital is nice for long play... but.. I still like the warmth of vinyl/analogue. Thanks Fosi! Nice unit! Quality built!..." Read more

7 customers mention "Compact"7 positive0 negative

Customers like the compact design of the product. They mention it's small but effective, saves space without compromising quality, and has a great, big, and wide sound.

"...Hard to explain the sound but I find it’s big and punchy but perhaps missing some mid range finesse...." Read more

"...a massive old amplifier with these 2 pieces in hopes of saving space in my music room...." Read more

"...Save space without compromising quality with this...." Read more

"I' am very pleased with my purchase, this is a wonderful compact unit that works right out of the box...." Read more

7 customers mention "Gain control"7 positive0 negative

Customers like the gain control of the electronic component amplifier. They mention the ability to adjust the gain is very useful to compensate the level difference between gravure levels.

"...I like that it has an adjustable gain that let's you dial in as needed depending on the volume or the record...." Read more

"...The Fosi did the trick, very punchy sound with an option to adjust the gain...." Read more

"...It works as expected. I like the level control...." Read more

"The adjustable gain is extremely helpful balancing phono preamp gain and amplifier volume to get the best sound...." Read more

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Chris N
Great purchase, you won't be disappointed!
Reviewed in Canada on April 23, 2025
Verified Purchase

I was hesitant not really being familiar with the brand but figured I'd give it a try. Exceeded my expectations! My turntable has a built in phono stage but this definitely makes a difference. I am not sure how it would compare to a high end unit but for a turntable I paid less than $300 for I don't see the point in spending more money. I like that it has an adjustable gain that let's you dial in as needed depending on the volume or the record. I don't have the unit grounded but have not noticed any unwanted noise. No hesitation recommending this!

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michael marton
Great preamp!
Reviewed in Canada on April 25, 2025
Verified Purchase
Surprisingly great sounding preamp. Better than the built in phono preamp stage in my Onkyo receiver (tx-nr747). Oddly enough, mine came WITH JAN GE 5456 tubes in the box. Not sure if someone upgraded the tubes and then returned it and it was resold but it sure looked new unpacking it so maybe some are being shipped with NOS tubes now?

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LDW
Great sound quality, some minor annoyances
Reviewed in Canada on September 18, 2024
Verified Purchase
The positive:
- Compared to Schiit and Pro-Ject, this is a fairly affordable phono pre amp.
- If you're upgrading from a cheap pre-amp like something from Pyle, you will DEFINITELY notice a huge increase in sound quality. Records sound crisper, better bass response, more lively sound (I keep mine at 39dB).
- The Gain dB selector switch is a nice touch.

The negative:
- While the tubes are a nice touch, they are a bit on the cheaper side, probably wouldn't hurt to swap these. The Tube sockets are a little on the cheaper side as well. I have experience with tube amps / pre-amps and these made me cringe a little. Be very careful when inserting the tubes. Some of the pins have a tendency to want to wedge itself between the plastic housing and the metal pin socket's outer shell.
- Just an FYI, there's a nasty *POP* when you turn this thing on. Maybe turn it on before your amplifier / speakers.

Overall, I'm happy with this and it's a definite increase in quality over a thin-sounding bare-minimum phono-preamp. Worth the price, I just wish a few things were better quality on this thing.

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3 people found this helpful

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Kevin Hill
Works as expected
Reviewed in Canada on May 17, 2025
Verified Purchase
It did exactly what 8 expected. For the price you can't go wrong

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Rob Fedorchuk
Warm tone at a reasonable price.
Reviewed in Canada on April 12, 2025
Verified Purchase
Works beautifully. What a warm tone. I can finally listen to my vinyl collection again.

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A.K.
Impressive quality, unbeatable price
Reviewed in Canada on January 13, 2025
Verified Purchase
I’ve had this preamp for over a year now. I’m still beyond happy with its performance. If anything, it sounds even better now than it did new. I upgraded the tubes to the GE ones some previous reviewers mentioned. It sounds much more detailed and punchier than the phono stage built into my CA AXR100 integrated amplifier.

There seems to be no point of ever spending another dime on a “fancier” unit considering how high this one punches above its weight and price point.

I’m running this with the aforementioned amp and a Technics SL 2000 outfitted with an AT-VMN40ML. It sounds brilliant.

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One person found this helpful

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Zach
Fosi x2 kicks butt
Reviewed in Canada on February 6, 2025
Verified Purchase
Pretty happy/impressed with a fairly low priced audio equipment accessory. I have a denon 300f turntable which I was not to happy with the amplification. Hooked this baby up and now I do not have to have volume alot higher on my amp then everything else. Does it make it sound better? Not sure yet. Does it add amplification and look bad ass? Damn straight!! 5 stars! Owned for a few weeks

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Zach

Fosi x2 kicks butt

Reviewed in Canada on February 6, 2025
Pretty happy/impressed with a fairly low priced audio equipment accessory. I have a denon 300f turntable which I was not to happy with the amplification. Hooked this baby up and now I do not have to have volume alot higher on my amp then everything else. Does it make it sound better? Not sure yet. Does it add amplification and look bad ass? Damn straight!! 5 stars! Owned for a few weeks

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Joe G.
Sounds great, hum driving me crazy.
Reviewed in Canada on March 2, 2023
Verified Purchase
Does an amazing job punching up and filling out the sound coming from a digital source out to even mediocre speakers. Does even better when using it as a preamp for a turntable.

Cannot get rid of the hum. Tried grounding wire, different tubes, against differet source/amp/speaker combinations that bloody hum is persistent and beyond my skill to get rid of it.

Really dissapointed because I love the sound when routed through this little preamp but the background hum was just too much of a nuisance for me. Return window closed while I was playing / experimenting with it or honestly I would return it.

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Alexandre
Muito bom!!
Reviewed in Brazil on June 2, 2025
Verified Purchase

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Dei mais pontecia na minha agulha!top

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roberto murgia
Ottimo
Reviewed in Italy on June 3, 2025
Verified Purchase
Ottimo imballaggio e prodotto conforme

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U. Thron
Kaufempfehlung!
Reviewed in Germany on May 24, 2025
Verified Purchase
Erstaunlich gut! Habe mein Audio Technica Turntable (AT-LP140 XP) über diesen Vorverstärker an den Aux-Eingang meines Technics-Verstärkers (SU-A700) angeschlossen. Klingt hörbar besser als beim Anschluss des Plattenspielers an den Phono-Eingang des Verstärkers. Habe allerdings nicht die mitgelieferten Röhren verwendet, sondern aufgrund der Bewertungen anderer User die DollaTek 2Pcs 7-Pin 5654W Vakuumröhren mitbestellt und eingesetzt. Bin voll zufrieden.

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Nishant
Great little piece of equipment
Reviewed in India on August 11, 2024
Verified Purchase
I was using an ART Pre DJ preamp foe a few years and just bought this for fun as the fosi preamp has had some great reviews. Great build quality though the tubes need a bit of care and effort to place them properly. This preamp has been a revelation in all senses. Played some of the best sounding LPs in my collection, Alan Parson iRobot MFSL and few other steely dan albums. The low end has improved significantly, great mid range and normal highs. Might try out new tubes at some point but totally satisfied currently.

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Brian
Great sound
Reviewed in Sweden on January 6, 2025
Verified Purchase
Incredible sound versus the pre amp in my existing amplifiers inbuilt phono.
Really enjoying the balanced sound stage.
Have bought another set of tubes for comparison purposes but the stock set up is very nice. Best audio equipment for the money I’ve ever bought

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Brian

Great sound

Reviewed in Sweden on January 6, 2025
Incredible sound versus the pre amp in my existing amplifiers inbuilt phono.
Really enjoying the balanced sound stage.
Have bought another set of tubes for comparison purposes but the stock set up is very nice. Best audio equipment for the money I’ve ever bought

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Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply

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From the brand

Preamplifier & Phono Preamp

Preamplifier & Headphone Amp

Product Description

Fosi Audio BOX X2 Tube MM Phono Preamplifier

Tube MM Phono Preamplifier/Tube Preamp

Clear Sound with Low Noise Circuitry

4-Level Gain Adjustment for Any Setup

Minimalist Design for Any Space

Replaceable Vacuum Tubes for Unique Tones

Perfect Addition to Your Vinyl Setup

Compatible with most MM phono turntables

Enhance Focus with Clear, Crisp Sound

3.5mm AUX Input for Easy Connections

RCA for MM Turntable Preamp

AUX for Tube Preamplifier

Elegant Vacuum Tube Design

Circuit Board Layout

Product Comparison

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Customers say

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Fosi x2 kicks butt

Top reviews from Canada

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Fosi x2 kicks butt

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Top reviews from other countries

5.0 out of 5 stars Muito bom!!

5.0 out of 5 stars Ottimo

5.0 out of 5 stars Kaufempfehlung!

5.0 out of 5 stars Great little piece of equipment

5.0 out of 5 stars Great sound

Great sound

Images in this review

Muito bom!!

Ottimo

Kaufempfehlung!

Great little piece of equipment

Great sound