Fosi Audio P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp with Bluetooth aptX LL HD Bass and Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jacks

My old and very cherished 1980’s music centre recently bit the dust, so I was looking to replace it in a cost effective way, but could not justify spending a fortune on an expensive amplifier which would only see occasional use, so after reading a few favourable reviews , I bought a Fozi V3 amplifier . I was a bit disappointed when I hooked it up to my Vintage Celestion speakers and connected my iphone to it to find that the sound was very underwhelming with a thin reedy sound so I put the V3 back in its box and forgot about it for a few months. One day , after a bit of googling I realised that I needed a pre-amp to boost the signal from the Iphone so I bought this Fozi P3 pre- amp for not a lot of money , connected it up to the Iphone / V3 amp /Celestion speakers and Wow ! , what a transformation. It sounded great . Inspired , I collected up all my old audio stuff, like a JBL 300 watt sub woofer I used in the car years ago, and I now have the best sounding sound system I have ever put together. With plenty of top end from the tweeters , I can really hear the high hats coming through , combined with earth shattering bass from the 300watt powered sub it sounds great . For the money, I think that this Fozi audio equipment is absolutely superb and fantastic value. This is an honest review, I bought the Fozi V3 and P3 with my own hard earned cash . I am really enjoying listening to music again !

For me the valves/tubes were very easy to fit, didn't need to remove the copper ring. Fosi must've listened to feedback and improved their processes. Build quality is very good. Case Is nicely anodised and smooth rounded corners. Looks the part. The sound Makes digital music sound more analogue. It doesn't smother the sound, but makes it that bit sweeter when required. It isn't like dumping 1Kg (2 pounds!) of sugar on your strawberries, for me it's a tiny dusting with a little cream just to dress it up. If that's your thing then go for it. If you don't think you don't want the sharp edges smoothed off a little it's still worth trying. You might like it. The switching and de-thump is very well managed, no pops and nasty clicks, helps protect your tweeters if you use it to drive a power amp like I do. Things that can be improved An extra input, say 3.5mm would be very welcome for another source. And a low pass (sub) output for those with a subwoofer. Perhaps that can be a new product for Fosi?

As others have said, the valves are a nightmare to fit. TOP TIP:- I used a nub of blutack to take an impression of the valve holder and then a small socket set socket to get the valve pins set to the right diameter to match the holes in the blutack impression. Without doing this the valves were never going in. I have played with, and modified, valve amps for 40+ years and never had such an extreme problem. The amp has very little gain, there was certainly no chance of pushing the power amp, not that you want to break the signal up, but the gain was almost no different to the line signal. The resulting sound is fine. Nothing unpleasant. It doesn't make you go "Wow!" either in a bad way or in good way really. It seems reasonably articulate, with no real vices, but it would be nice if it had a bit more "Wow!" I have seen reviews that suggest the headphone socket is a waste of time because of the lack of available gain. I haven't used it. I also haven't used the Bluetooth either so can't comment on any latency or quality in that respect. It is nice and compact and does the job I bought it for ... and it costs less than £100. Am I happy? Yeh, I guess, it's just not the sort of thing you say to people "Come and listen to this. It's awesome." It's fine.

Sounds very nice. Very easy to set up and my phone found the connections straight away. I now have a few Fosi amps and preamps and they are very high quality for the money.

Great build quality, excellent Matt finish. Very nice ice blue led for the valves. Clean sound and great Bluetooth performance. A bit of tube/valve rolling is worth it if you want different sound signatures. The P3 will feed any power amp with a nice clean signal. I will be trying it out with a few different power amps soon like the Tibo PA150, Aiyima D325X etc. Very handy little pre amp and worth having in your sonic arsenal.

One of the best budget amp crystal clear sound amazing

Yes it gives a ‘warmer’ sound

I just about gave up installing the tubes on this. Splayed the connectors out a smidge and they fitted. I paired my P3 to the V3 amp and run this into Q acoustics speakers. This is our kitchen setup so needed everything out of sight too. The sound is good for the size of amps.plenty loud and good bass.

Prodotto di altissima qualità, perfetto per ascolto di musica ad alta definizione. Lo ho abbinato ad un amplificatore Yamaha S-A201 e suona perfettamente, riesce ad aggiungere quella nota di calore che manca all’amplificatore.

Uzun zamandır fosi audio ürünlerini satın alıyorum. Zamanından önce teslim ettiği için Amazon'a ve de kaliteli ürünleri uygun fiyatlarla sattığı için fosi audio ' ya teşekkürler. Bu cihazı; Fosi' nin BT20A pro amfimin çokta parlak olmayan sesine katkı sağlar ümidiyle aldım. Genelde yorumlarda V3 ile eşleştirenlerin yorumlarıni görünce satın alırken biraz tereddüt ettim. Çünkü bu amfilerin zaten bir preamfi özellikleri vardı. İkinci bir ön amfi ile nasıl eşleşir endişesi taşıdım. Ama sorun olmadı. Bağlantılarını yaptım ve çalışmasında herhangi bir sorunla karşılaşmadım. Bu cihaz, BT20A pronun sesini daha açık hâle getirdiği gibi bas ve tizlerde de belirgin bir iyileşme sağladı. Bazı yorumların aksine tüpleri yuvalarına yerleştirmek iki dakikami aldı ve takarken hiç zorlanmadım. Bu arada bir tespitte bulunmakta yarar görüyorum. Bu cihazlar küçük ve her bağlantıyı bu kutucuğa yerleştirmek zor olabilir. Ancak yine de preamfi katıni daha kaliteli yaparak ve fiyatını o oranda yüksek tutarak insanların sürekli başka cihazları satın almak zorunda bırakılmaması yararlı olur diye düşünüyorum. Ancak bu tespit ve öneri; Fosi' nin işine gelmeyebilir. İlave özellikleri olan cihazları üretmek ve çeşitlendirmek günümüzün bir satış politikası olabilir. Ama yine de fiyatı biraz yüksek tutarak daha entegre edilmiş ve ses kalitesi artırılmış cihazlar üretmekte iyi bir pazar yaratabilir.

I have been following fosi products. There are mixed reviews on Reddit and youtube some just branding it as cheap chifi setups. I wanted a Bluetooth transmitter and I was eyeing on fiio but that was costly so this was another option. I didn’t need an amplifier though. So this preamp was a good option. I personally like old vintage songs and warmth. So tube amps were a good option for me. The only question was whehter the build quality and sound quality would be good? Once I received, I connected it to my studio monitors and I could understand the warmth from the tubes. Then I listened to it by connecting on my IEMs, warmth is noticeable. The music becomes more enjoyable to hear. Soundstage is not that wide. But the bass and treble controls are really nice. Bass noticeably gets boosted at 12 o clock position. The volume button increases non linearly. It has enough amplification for IEM that I never get past the 12 o clock position, so I guess it would be able to drive full sized headphones also. One con would be when there is no electricity and when I play it on the inverter there is a hissing sound (some kind of weird earthing issues Iguess, because same thing happens for my studio monitors also) Conclusion - it has impressed me with the sound quality and build quality. Maybe better tube amps will be out there but this one is a good starting point.

It was quite easy to set up. Now I have the ability to use headphones and Bluetooth speakers to my turntable. It also provided a boost to my powered speakers. The sound is amazing! Rich tones, great dynamics, and deep bass!

j'écoute la musique sur Deezer et mon PC + Dac Q6 fosi + Préamplificateur P3 fosi + Casque AKG K240 studio.... Que dire... Du bonheur. Qualité/prix fosi imbattable. Ah, j'oubliais,... enceintes actives Argon audio Forte MKII + 2 caissons de grave... Tout ça pour écouter sans casque évidemment... Encore que du bonheur... Voilà, voilà,... Que la musique est bonne.