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🎶 Elevate your vinyl vibe — hear every groove like never before!
The Fosi Audio BOX X2 is a premium tube phono preamp designed for MM turntables, featuring ultra-low noise circuitry, three switchable gain levels (39, 42, 45 dB), and replaceable vacuum tubes for personalized sound profiles. With versatile RCA and 3.5mm AUX inputs and a grounding post to eliminate hum, it delivers warm, clear, and immersive audio in a compact, stylish aluminium chassis. Perfect for audiophiles seeking to upgrade their vinyl listening experience with professional-grade sound quality and flexible connectivity.

























| ASIN | B07XNTHHBP |
| Best Sellers Rank | 1,462 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Home Audio Preamplifiers |
| Brand | Fosi Audio |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 3,256 Reviews |
| Included Components | Power Supply |
| Item Dimensions | 11.8 x 9.8 x 3.3 centimetres |
| Item Weight | 308 g |
| Item dimensions L x W x H | 11.8 x 9.8 x 3.3 centimetres |
| Manufacturer | Fosi Audio |
| Manufacturer Part Number | Box X2 |
| Material | Aluminium |
| Maximum Supply Voltage | 12 Volts (DC) |
| Maximum supply voltage | 12 Volts (DC) |
| Minimum Supply Voltage | 12 Volts |
| Minimum supply voltage | 12 Volts |
| Model Number | BoxX2 |
| Mounting Type | freestanding |
| Mounting type | freestanding |
| Number of Channels | 1 |
| Package Type Name | Cardboard box |
| Product Warranty | 24 months |
| Unit Count | 1.0 count |
| Voltage | 12 Volts (DC) |
A**R
Great improvement to sound depth and quality of vinyl output
Having recently setup a Pro-Ject T1 SB turntable to go alongside some of my Sonos speakers, which includes an in-built pre-amp, I noticed a lack of depth to the sound output and in particular, a lack of volume available through the speakers. Having done some research on external 3rd party MM preamps, including Pro-Ject's own products, I found some good reviews of the Fosi Audio X2 Phono Preamp, so ordered it yesterday and it arrived by 10:00 this morning (Amazon at their finest! lol). Anyway, it was completely straight forward to setup using my existing phono cables between the turntable and the preamp, plus a new set from the preamp to the speaker, which I bought separately to ensure I had good quality cables with gold-plated contacts. The sound improvement is fantastic, with each of the three gain settings making a noticeable difference to the depth and quality of the output from the vinyl. I may look into different valves in future, to see how they further affect and/or improve the sound of the music, as suggested in some of the other product reviews on here, however my immediate feedback on this products is that it has been a great buy.
D**E
Great phono stage at this price point
Bought this because it was cheap and I had heard a few reviews saying how good it was so I thought I would buy one and see how it compares up against a ifi phono stage. Well it actually shocked me just how good this little phono stage is. The lovely warm sound of valves but surprising real detail and a wide soundstage. That was from the outset and of course as it’s run in the sound changes and it’s got even better. Fosi audio…. Never heard of them it’s not real hifi was what I was thinking…… well it’s blown the socks off the ifi and project phono box that’s for sure. If you’re looking for a phono stage without spending a fortune or just looking to upgrade from the built in phono stage in your amp just buy one of these. Anyone who is upgrading from the built in phono stage in there amp is going to be in for a real treat. The soundstage alone is impressive but that extra detail topped off with that lovely warm tone of the valves this little phono stage is made to impress 10/10
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.
D**Y
Good value phono stage
I had a Pro-Ject Phono Box Bluetooth but I wanted to switch to wired only (and there is no way to turn off the Bluetooth signal on that model), so I did a search and this little Fosi box got good reviews and I took a punt. Couldn't really tell much difference sound wise to the Pro-ject but that's no bad thing as it sounded good anyway. The little glow from the tubes is quite nice to look at and overall the build is reasonable for the price point. On the highest gain setting there was a little hiss noticeable when my amp was at higher volumes but this went away at middle gain setting, so overall it's good value for money and as long as it stays in working order I doubt I'll want for anything else.
N**L
Sounds way better than it cost
Fantastic quality little pre-amp. Sounds way better than what it cost
L**R
Audiophile snobs read no further
Looking for a second phono pre amp but didnt want to pay £200 plus for another project s2 I did what any reasonable person would do and undertook some research.Typically I googled"any suggestions for a reasonably priced phono amp".It is here I encountered the audiophile snob.These entities sneer at anything that sniffs of budget and try to outdo each other by coming up with the most obscure contraption found on gods earth.A typical suggestion might be say the"Van Den Widerbeest XR46TT"which when you naively try and google find it is either out of stock or there is just one left at only £1250. Which finally brings me to the Fosi Audio Box X2 at £68.Is it as good as my Project S2?No,but the difference is not that great and may be even less if I change the tubes from the default ones supplied.It is easy to setup,just gently line up the tube pins with the holes inside the machine and gently push in.It is atiny bit fiddly but patience will always prevail.Attach the Rca connectors in the appropriate places,turn on,adjust the gain settings and voila.Basically it increases the volume and gives your vinyl a kick in the arse (audiophile technical term,sorry).Its probably not as good as the aforementioned "Wilderbeest" but it does a great job.
R**.
Excellent pre amp
Replaced existing cheaper pre amp, what a difference it made, brought my vinyls back to life ,well worth the cost and excellent delivery
A**R
USA 5654 tubes a pleasant surprise!
Out the box it sounds very good. I have a Linn LP12/Ittok/Dynavector 10x MC. The high output moving coil cartridge is perfect at the lowest gain setting on the preamp. The supplied valves to my surprise were USA JAN 5654 W which seem to work really well. I was expecting Chinese tubes and ordered GE JAN 5654 W as an upgrade, but they arrived as the standard version, not the GE variant so those are going back. I’ll wait until the valves settle in then switch back to the Naim 102 phono boards for an A-B comparison. But for now I’m enjoying the tube novelty! The old turntable is sounding great anyway, having just upgraded to a Lingo 4 power supply. 😊 Apologies if it’s all jargon to you🙄
M**B
De buizen goed aandrukken als je andere buizen monteert
A**E
Muito bom!!
Dei mais pontecia na minha agulha!top
T**E
Très bon
Déjà le poids de l'appareil donne une impression de qualité, mais se confirme à l'utilisation, amplification réglable,son très bon, pas de souffle ou bourdonnement, parfait pour moi.
P**R
Too Good To Be True For The Price
This Preamplifier is amazingly good for the price and compares favourably when compared to my €1,500 Preamplifier. Appears too good to be true for the price, but it delivers clean smooth musical sound with zero gain noise.
J**A
Robi różnicę na tle wbudowanego wzmacniacza.
Na tle wzmacniacza wbudowanego w gramofonie robi wielką różnicę, a samo pokrętło chodzi bardzo przyjemnie . Mała rzecz a cieszy.
Trustpilot
2 weeks ago
1 month ago