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Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp with TPA3255, 240W for HiFi Home Theater AVR Receiver Component, RCA/XLR Balanced Inputs with 48V/5A Power Supply

Description:

About this item:

  • Mini Monoblock Amplifier: Crafted for HiFi audiophiles, the V3 Mono allows you to drive a single passive speaker with one amp, delivering up to 240W @4Ω of rated power. It offers the flexibility to build your home audio 2/3/4/5-channel system effortlessly. The V3 Mono can serve as a power amplifier for multi-channel AVRs, complementing the output power to easily drive high-power speakers in home theater systems.
  • Innovative Cutting-Edge Technology: Fosi Audio has achieved a technological breakthrough through independent research and development by applying PFFB (Post-Filter Feedback) technology to the V3 Mono for the first time. This effectively overcomes the common load dependency issues of Class-D amplifiers, improving distortion and enhancing frequency response, thereby significantly enhancing sound quality and performance.
  • Audiophile-Grade Components: The V3 Mono incorporates the high-end TPA3255 Class-D amp chip, paired with well-known components such as Japanese Nichicon filter capacitors, ELNA capacitors, German WIMA capacitors, and Japanese Sumida inductors, etc. Additionally, it features an upgraded four-layer PCB. This combination not only ensures high power output but also achieves a THD as low as 0.006%, a SINAD of 101dB, and an SNR of 123dB.
  • Advanced Cooling: Utilizing Fosi Audio's pioneering full-body heat dissipation design, the TPA3255 amplifier chip is placed at the bottom and tightly integrated with the chassis, allowing heat to be effectively dissipated through the casing. Coupled with dual side ventilation holes that enhance internal airflow, this ensures the V3 Mono can deliver stable, high-power output over extended periods.
  • User-Friendly Design: Supports both XLR/¼" TRS balanced and RCA single-ended(with gain selection) inputs, with an easy toggle switch for selection. Additionally, it features an auto power/signal sensing mode to enhance energy efficiency. You can also customize your preferred sound signature by replacing the stock NE5532 op-amps, supporting DIP8 dual discrete op-amps such as Sparkos SS3602, MUSES02, OPA2604, Burson V5i, V6, V7, and more.

    • Review:

    4.7 out of 5

    94.29% of customers are satisfied

    5.0 out of 5 stars Exeptional

    M.T. · 17 August 2024

    I replaced my old Rotel power amps for these monos, and they are absolutely fantastic. Running a pair of Monitor Audio Gold Signatures, I had high expectations and they exceeded them.Immense imaging, clarity and a big full bodied sound. Bigger brands should be very worried...Bravo Fosi Audio.

    3.0 out of 5 stars Buy an SMSL a300 & cheap preamp instead...

    K.T. · 4 August 2024

    My setup is modest budget-ftiendly kit, I already had an SMSL a300 amp wth the volume turned all the way up and the volume controlled by a cheap passive preamplifier. After lots of research & believing all the hype, decided to 'upgrade' to these Fosi V3 Monos.Admittedly there was loads of detail in the music with them (but no more than with the a300) but whereas the sound with the a300 was full bodied & rich with a big, deep immersive soundstage, the Fosis sounded weak, thin & compressed.I could swap the op amps to try and get a similar sound to the a300 but the pair of these standard units were already £50-ish more than the a300 and 4 decent op amps could be £300-ish (yes you could really do with swapping 4).Save your money and get just one a300 instead, if you really want to try dual mono buy two and put them in bridged mode to turn them into monoblocks, it will still be cheaper than the V3 Monos + decent op amps..If you really want to try op amp rolling a Fosi ZA3 might be the better option, if you buy a single ZA3 and want to swap the op amps you only need to buy 2, if you decide to buy a second ZA3 you can turn them into monoblocks and if you do that you'll only need to swap ONE op amp on each unit so you can take one of the upgraded op amps out of the first ZA3 and put it in the second one, you'll still only need the pair you've already bought - you'll need 4 for the V3 Monos...

    Great product at a great price

    A.C. · 17 October 2024

    Product arrived quickly and they sounds fantastic, could not be more pleased with their performance.

    Ordered 3, one was defective

    M. · 7 August 2024

    1 out of 3 was defective , it powers on but no sound.The remaining two work great, they do seem a bit too hot. As long as it doesn’t break in next some years, nor interfere with the sound heat doesn’t bother me.One thing to note there is much louder sound when I use RCA input vs XLR I had to add +9 db on my receiver for same volume.Also there is a some noise when using RCA to RCA, XLR has almost no noise. My receiver unfortunately doesn’t have XLR output, I just use RCA to XLR cable. Works great, no interference noise, only downside is I have to +9db on a receiver.I hear lots of people adding Sparkos OP amps. Is it worth it I wonder?

    Relación calidad-precio 10/10

    C. · 13 October 2024

    Tengo un equipo de clase media-alta y compré dos V3 por las buenas reseñas que a nivel técnico tienen en todo el mundo. Las van pasando las horas de funcionamiento, van sonando mejor.Utilizo de previo mi Streamer Wiim Pro-Plus y las cajas T+A Criterion TMR60 y la escena es tremenda, al estar los dos canales completamente separados, el sonido cálido y descriptivo, es un clase D con mayúsculas.

    ich konnte nicht wiederstehen;-) Obwohl ich schon den etwas neueren ZA3 habe. Beide echtes High End!

    p.s. · 4 September 2024

    hi, die Fosi V3 Monoblöcke sind schon etwas Besonderes. :-) Vor allem wenn die Version mit je einem 48V 5A Netzteil genommen wird.Gut sie werden recht warm - geben gefühlt aber noch einen Tick wärmer wieder als der ZA3.Mit ein Grund für den Kauf war ein Video im internet von Damir.Da wurden die kleinen Mono-Blöcke mit einer High End Piega Coax 611 getestet, und auch mit einigen ebenfalls hochwertigen anderen Lautsprechern.Die dort beschriebene Auto Funktion fand ich besonders gut.Die Wiedergabe ist ähnlich exakt und unvoreingenommen wie bei der ZA3,und wer die schon hat braucht eigentlich die beiden Monos nicht,da die ZA3 fast allein schafft was die Monoblöcke leisten.Dennoch ist es verlockend sich noch die noch autonomeren Fosi V3 Monos zu holen:-)Ich habe sie mit einem preiswertenpassiven Vorverstärker verbunden.Direkt am PC ist Russisch Roulette- wehe wenn wie nicht selten der Soundchip plötzlich auf voll geht..Die ZA3 sind,falls zwei gekauft wurden,für Bi Amping oder so noch optimaler- weil nur da das volle Potenzial ausgeschöpt werden kann.Bitte keinen VooDoo Webseiten glauben, die behaupten, Alu und Keramik Lautsprecher seien Schrottoderriesige Null Ohm Weichen seien per se besser als exakte normale.Andere, am Anfang durchaus freundlich berichtende Webseiten, driften immer mehr ab in physikalisch nicht haltbare Aussagen.Da sind selbst die die extrem teures High End favorisierenden Händler sympathischer- da deren Kunden die ungemein hohen Preise nicht weh tuen,und es deren Wunsch ist "gefühlt" das beste zu haben.Dies musste ich mal loswerden.Der Preis der kleinen Monos ist Heiss;-)Die Wiedergabe - nicht der Klang - ist genau so gutoder gar besser als bei teurem High End.Die die sich nicht ganz sicher sind, und mit etwa 10 Watt an 8 Ohm auskommen,können noch über den - gerade noch bezahlbaren - SMSL A1 Class A nachdenken..Mehr High End geht nicht.

    Wow

    J.M. · 30 August 2024

    I just got these amps. They are not even broke in yet and wow. They are powerful. And clean. I do suggest getting them with separate power supplies. The package with one power supply for 2 amps does unfortunately have a bit of noise. But with separate power supplies they are superb. I cannot wait till they are broke in as I am seriously impressed already.

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    Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp with TPA3255, 240W for HiFi Home Theater AVR Receiver Component, RCA/XLR Balanced Inputs with 48V/5A Power Supply

    4.6

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    Product origin: United Kingdom

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