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SMSL SA-50 2x50W D-AMP TDA7492 Hi-Fi Stereo Amplifier Power Amplifier + Power Adapter (Black)

3.9 3.9 out of 5 stars 223 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Voltage 24 Volts
Manufacturer SMSL
Maximum supply voltage 24 Volts
Minimum supply voltage 24 Volts (DC)
Mounting type Surface Mount

About this item

  • Real 2x50W Stereo design,entry-level amplifier,D AMP TDA7492,please do not used as a DAC.
  • Internal parallelled 6600uf filter capacitors,well enough to meet the high power of full power working, and solved the problem of disadvantage of bass
  • Built-in speaker protection and power delay circuit
  • Power and circuit protection indicator. Please prevent the broken parts of left and right channels speakers stick together, it will lead to the automatic protection of amplifers.(It will lead to directly turn off)
  • High-grade Aluminum Shell,drawbench erodegrain Oxidation Process

Customer reviews

3.9 out of 5 stars
223 global ratings

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Customers say

Customers find the sound quality fantastic with no distortion. They appreciate the powerful output for its size. Many consider it good value for money and worth investing. The compact size fits neatly on their computer desks. Overall, customers are satisfied with the build quality of the product.

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Sound qualityPowerValue for moneySizeBuild qualityFunctionalityQualityDesign
73 customers mention ‘Sound quality’57 positive16 negative

Customers appreciate the sound quality of the product. They find it has a good standard and decent speakers. The volume is comfortable at around 8 o'clock, with no distortion audible through the center speaker. There is almost no hiss at high volume levels, and the quality is clear. The sound is detailed enough with reasonable stereo imagery, not over-heavy on the bass.

"...It gives plenty of volume and makes snare drums sound sharp, bass guitar sound deep, and lead guitar has a satisfying bite, or an enveloping bluesy..." Read more

"...with normally ample (or even a bit too much) bass, it sounds more impressive as it "corrects" the excess bass, whilst retaining good..." Read more

"...I found comfortable listening volume at about 8 o'clock. First on the listening agenda was The Nightfly by Donald Fagan...." Read more

"...As for volume - I know that it is loud enough for me - it will happily blare out at a volume which I would consider too loud for a room inside the..." Read more

52 customers mention ‘Power’52 positive0 negative

Customers appreciate the amplifier's power. They mention it has a balanced output and is powerful for its size. The amp drives speakers well, with zero background noise. The power supply is substantial, though lacking bass.

"...A qualty unit. The power supply is fairly substantial, it is rather like a laptop supply, and not simply the usual "small-cube-with-a-cable"...." Read more

"...This amp drives the speakers superbly. The sound is crisp, bassy, balanced and most of all clear...." Read more

"...In short, a great little amp which I'm pleased that I bought. I would imagine it would sound great with a turntable and a small phono amp." Read more

"...One good thing is that the power output spec is actually "real" continuous RMS power, not some peak power estimate...." Read more

43 customers mention ‘Value for money’38 positive5 negative

Customers appreciate the value for money of the product. They find it worth investing, with good performance and sound quality for the price.

"...I am very impressed by this unit, it represents great value, and gives a sound different to, but as good as, the old amp which it replaces...." Read more

"...In conclusion, it is great for the money and would suit many tasks in my case powering monitor speakers for my computer or other general tasks...." Read more

"...offer the fidelity aspects that an audiophile craves, but for a reasonable price and robustness, I am very happy with this product." Read more

"...It's by no means Yamaha quality, but for £58 is good value for a bedroom or small room, wouldn't suggest for Livingroom, look for something more..." Read more

36 customers mention ‘Size’32 positive4 negative

Customers appreciate the compact size of the amplifier. They say it fits neatly on their computer desk and looks well-made. The amp provides good sound quality and power from a small box, with plenty of headroom for two speakers. It also sits nicely on top of their Cambridge Audio DACMagic 100 DAC.

"...It fits neatly on my computer desk (actually a large gaming desk)...." Read more

"...The sound from something so small and compact is quite honestly, amazing...." Read more

"...Sound was crisp and clear with tight base. Next up was Saint-Saens Organ Symphony, a test piece if ever there was one...." Read more

"...For me, this is a great little device, due to its size, simplicity, and price...." Read more

29 customers mention ‘Build quality’25 positive4 negative

Customers like the build quality of the product. They say it's sturdy and has a solid metal case. The amp is described as well-built and powerful, even though it doesn't produce earth-shattering sound.

"...The SA-50 is well-built,the power switch is spring-loaded but feels firm, the volume knob is large enough to be comfortably operated, and feels..." Read more

"...aspects that an audiophile craves, but for a reasonable price and robustness, I am very happy with this product." Read more

"...Construction seems fairly good quality - no niggles there...." Read more

"...turned, but I prefer it as it is - it still feels like an incredibly high quality experience using the device...." Read more

29 customers mention ‘Functionality’25 positive4 negative

Customers appreciate the amplifier's functionality. They say it works well, is compact, and has a good design. Some mention it works well as an amplifier for passive subwoofers and overhead speakers. The output power is sufficient to drive their speakers easily.

"...The output was quit enough to drive my speakers easily. To hear any hiss from speakers you would have to have your ear right next to them...." Read more

"...of which this is definitely a mid-fi rather than hi-fi spec, THD at its best is 0.02% (which is impressive) but only in a narrow band between 100-..." Read more

"...These also perform stunningly for a near field listening experience...." Read more

"...a pair of Polk Audio 50w in-wall speakers in our bathroom, very impressed with the output...." Read more

26 customers mention ‘Quality’26 positive0 negative

Customers are satisfied with the product's performance and value. They find it a great little amplifier with outstanding performance and good value for money. Some say it's more powerful than expected, making a superb desktop HiFi system with a tiny footprint.

"...A qualty unit. The power supply is fairly substantial, it is rather like a laptop supply, and not simply the usual "small-cube-with-a-cable"...." Read more

"...Anyway, the SA-50 is superb. I'd happily build a regular hifi system around one, let one a desktop one...." Read more

"...( the 60 is very very good aswell ). The company who supplied this were excellent...." Read more

"...; the excess bass, whilst retaining good extension and enthusiastic top end is then less obvious...." Read more

11 customers mention ‘Design’11 positive0 negative

Customers appreciate the sleek and modern design of the amplifier. They find it compact and well-made, with a subtle volume knob that is a nice touch.

"...What I got was a sleek, mobile powerhouse that far exceeded expectations and I couldn't recommend it more...." Read more

"...The backlit volume knob is subtle and a nice touch. For me the sound is a little bass heavy, but not so much that it effects enjoyment...." Read more

"...It's pretty cheap, has oodles of power to drive speakers, is nice and small. My one did come with a proper fused power supply...." Read more

"...Note the replacement amp is £10 cheaper! Big shame. Nice and compact units though, and look well made. Maybe the addition of a bass/treble would help." Read more

Not perfect, but great for desk use.
4 out of 5 stars
Not perfect, but great for desk use.
Observations:* Power on is instant, where as power off takes about 3 seconds before the speakers go quiet.* Some reviews mention a bad power cord. Mine was fine, and full sized.Pros* Louder than I'll ever need for nearfield listening with bookshelf speakers.* Analog volume dial. I prefer this to digital controls, but this dial isn't without drawbacks (see below).* Size. This is perfect for a desktop.* Doesn't get hot. Or even warm.Read the cons below knowing that this is my chosen device and I'm very happy with it. I use it daily...Cons* The Dial - Plastic. Metal dials are always better. - It's got an exponential increase in volume. You turn it about 3% and it goes from "off" to "uncomfortably loud" (again, in my nearfield setup). Make sure you keep the source volume (PC in my case) turned down a bit so you get more dial space to work with. - There's a channel imbalance at the very low end of the dial. Right side only matches volume when you turn it up a bit more. If you do the above and turn down source volume this becomes moot. Still annoying however.* Ground noise is very present. After getting annoyed by it, I tested *just* the amp (no incoming source) with a conditioned power supply, on a separate desk with good speaker wire. I'm using Dali Zensor 1 speakers, so reasonable quality. There is a hissing I can hear about 1 meter away. Sometimes I can hear it through quiet music. A full sized amp would generally have a much lower hiss, but I don't want a beast filling up desk space. The size of this device is worth it, and I couldn't find another similarly priced option. On balance I'm happy to live with it. FYI this hiss does not increase when you turn up the volume. It stays constant, and is likely resulting from the soldering and built-to-price nature of the device.* There was a very slight height imbalance with he back left foot. Bugged me so a couple of slices of electrical tape fixed that.Overall I do recommend this for desktop use. If it's anywhere with more space, consider other options.
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Top reviews from United Kingdom

  • Winchester
    5.0 out of 5 stars Compact, good-sounding desktop power amp.
    Reviewed in the United Kingdom on 3 July 2022
    Verified Purchase
    I bought this amp to replace a 20-year old Hi-Fi amp for my computer-based audio system.
    When buying anything for Amazon, I usually read expert reviews on-line as well as customer reviews on the Amazon website.
    However, with kit like this, there aren't many online reviews, I suspect it's because the usual Hi-Fi "experts" don't take this sort of thing to be serious Hi-Fi. So based on the customer reviews alone, I was moved to buy one.

    The SA-50 is well-built,the power switch is spring-loaded but feels firm, the volume knob is large enough to be comfortably operated, and feels smooth, firm and reliable. A qualty unit. The power supply is fairly substantial, it is rather like a laptop supply, and not simply the usual "small-cube-with-a-cable".
    It is fairly straightforward to set up, I didn't have any speaker cables with suitable plugs, so used my exisiting cables with bare wire terminations. This requires a little care, the bare cable should be cut so that when it is twisted and fed through the hole in the terminal at the back of the SA-50, it doesn't need to be wrapped around or protrude too far, as naturally the terminals are closer together than on a conventional amp. I didn't have any problem tightening the terminals with my fingers, I am of average build. If you have suitably fitted cables, you'll have no problem connecting your speakers.
    I connected my DAC/Headphone amp via RCA connectors, the DAC is fed by USB directly from my computer. With one input only, the SA-50 is a power amp, and some might connect their computer via the on-board sound output, I don't know how good (or not!) on-board sound is nowadays, but for best sound quality I would recommend a USB DAC as a pre-amp, which bypasses the on-board sound.
    The sound is clean, clear and neutral. I have the volume control set at about 3/4 of full, and adjust volume via my DAC. It gives plenty of volume and makes snare drums sound sharp, bass guitar sound deep, and lead guitar has a satisfying bite, or an enveloping bluesy smoothness, depending who I'm listening to!
    I am very impressed by this unit, it represents great value, and gives a sound different to, but as good as, the old amp which it replaces. It fits neatly on my computer desk (actually a large gaming desk). Sometimes, audio equipment can develop an even better sound with use, so I'll update this review if necessary.
    In the meantime, I can't argue with such a good price for so much sound. Highly recommended.
    EDIT
    After a couple of weeks, the unit kept cutting out on the left channel, then the channel failed completely. This seems to have happened to other Amazon buyers too.
    I took the cover off and saw that the wires to the output connectors we not attached with sufficient solder, so I re-soldered them all, just to make sure. The amp is back to normal, so maybe this is a fault which could be easily fixed if it happens to you, save having to send it back, but of course it would invalidate the guarantee.
    One person found this helpful
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  • Funkymonk
    1.0 out of 5 stars Excellent amp for the price (update - broken)
    Reviewed in the United Kingdom on 9 December 2014
    Verified Purchase
    Small desktop amplifiers are becoming a popular item and there's plenty of competition between Chinese manufacturers. Topping and SMSL seem to be the main brands in this sector. The SA50 is simple - there's just one set of RCA inputs - one set of speaker outputs, that's it. On the front is the on-switch and a volume control. I think some hifi gear suffers from trying to put too much into one box - I'd looked at the Topping VX1 which also features a DAC and a headphone out, but reviews suggest the headphone out is a rather poor tapped output from the speakers. So I decided to keep things simple. I've driven Wharfedale and QAcoustic speakers from the SA-50 and the result is as good as any hifi amplifier I have owned. Obviously it's not ideal if you want more than one input, but there are plenty of options there. SMSL makes a great headphone amp/DAC in the 793II which you can then feed to the SA-50. My SA-50 currently receives a feed from my Xonar DX soundcard, but I'm adding an SMSL M2 USB DAC soon. Anyway, the SA-50 is superb. I'd happily build a regular hifi system around one, let one a desktop one. Buy one before they realise what a fantastic piece of kit it is and demand drives the price up.

    Edit: Well here I am in August 2015, around eight months after I bought the SMSL SA-50 and it is broken. One of the two RCA inputs has failed leaving me with one stereo channel. So fun while it lasted, but iffy build quality.
    18 people found this helpful
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  • Fleurdelyes
    5.0 out of 5 stars Punches above its weight !
    Reviewed in the United Kingdom on 11 September 2015
    Verified Purchase
    I wanted a good powerful cheap amplifier to drive a couple of speakers in my garage and I wanted it to be small ..... I wanted to be able to listen to music and radio from my phone whilst doing those little jobs that never seem to end up being little jobs...... well, I can't praise this little amp enough !
    I have had a number of very nice amps, speakers and have always spent my spare time with music playing. I recently went wireless with a Sonos system which is very convenient and sounds okay. This little amp drives a couple of Wharfedale diamond III speakers and the source is provided by a mp3 player and my phone ( note 2 ). The sound from something so small and compact is quite honestly, amazing. At first I had the amp connected to a couple of monitor speakers ( purchased off Amazon ) and it sounded tinny and hollow..... I was a little miffed as I expected a lot more...... I then changed the speakers and wow ! This amp drives the speakers superbly. The sound is crisp, bassy, balanced and most of all clear.
    If you want a small amp that has more power than it should have and a sound that far exceeds your expectations then this is quite simply the only choice ( the 60 is very very good aswell ).
    The company who supplied this were excellent. I had contact from them to confirm delivery and to enquire whether I was satisfied with the product..... I most definately am. Highly recommend this product.
    One person found this helpful
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Top reviews from other countries

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  • MichaOderSo
    5.0 out of 5 stars Potenter, neutraler und dynamischer Kraftzwerg
    Reviewed in Germany on 13 September 2018
    Verified Purchase
    Ich habe schon mehrere Class-D-Verstärker von S.M.S.L. besessen und nutze bereits seit einigen Jahren den Q5 Pro als Allrounder im Wohnzimmer (zahlreiche Anschlussmöglichkeiten und Fernbedienung). Mein erster AMP dieses Herstellers war ein SA-60, welcher potent und glasklar an meinen Standlautsprechern aufzuspielen vermochte.
    Da ich nun noch einen kleinen Kollegen für den heimischen Arbeitsplatz brauchte, um meine beiden Dayton Audio Reference RS-400 in einem von mir leicht optimierten CT265 (backloaded Horn) zu betreiben entschied ich mich der Einfachheit halber für diesen AMP.

    Der SA-50 spielt sehr dynamisch und kraftvoll in allen Bereichen auf. Er verfälscht oder verzerrt die Wiedergabe nicht, auch nicht bei höheren Lautstärken. Insgesamt handelt es sich hier um einen sehr neutralen Verstärker, was ich persönlich sehr begrüße.

    Verarbeitung und Preis-Leistung sind absolut top. Ich greife jederzeit gern zu Produkten dieses Herstellers.
    Report
  • Giuseppe
    3.0 out of 5 stars Buon ampli ma non Hi-fi
    Reviewed in Italy on 27 April 2018
    Verified Purchase
    L'amplificatore, in classe D, è dotato del chip TDA7492, accreditato di 50W per canale a 6 ohm o 40W a 8 ohm, con un'alimentazione da 25v 5/6A.

    Punti a favore:
    - ottima costruzione, robusto, esteticamente gradevole
    - molto compatto
    - pronto nell'erogare i watt disponibili: non ho effettuato misurazioni, ma la potenza sembra quella dichiarata. Pilota agevolmente una coppia di Indiana Line Nano 2 (mai portato il potenziometro del volume oltre metà corsa...)
    - elettronica silenziosissima: col potenziometro a fine corsa, in assenza di carico, è virtualmente silente (si devono attaccare le orecchie ai coni per sentire un flebile, e fisiologico, fruscio elettrico)
    - alimentatore a corredo di buona qualità, robusto e pulito nell'erogazione della corrente (non produce alcun disturbo nel segnale).

    Contro:
    - il suono è un po' compresso sulle frequenze medie, medio-alte e medio-basse, rendendo un po' affaticante l'ascolto prolungato in prossimità dei diffusori (la classica situazione con le casse posizionate ai lati del monitor di un PC). Concordo pienamente con un'altra recensione 'di minoranza' del prodotto (non la troverete qui, ma in un'altra inserzione del marketplace)
    - non molto dettagliato, ma come chiedere di più ad un'ampli di questa fascia?

    A questo prezzo non credo ci sia di meglio, tenendo conto che l'alimentatore è incluso. Confrontato con Sabaj A1 (TPA3118), Yeeco 1600076EU (TPA3116) e Breeze Audio TPA3116 (TPA3116D2): stravince sul TPA3118 e di misura sul TPA3116 (chip che presentano altri problemi).
    Se tuttavia cercate l'alta fedeltà dovrete spendere un po' di più, rivolgendovi altrove.
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  • Kenji
    5.0 out of 5 stars PCスピーカ用に使ってます
    Reviewed in Japan on 14 July 2019
    Verified Purchase
    出力50Wはアッシの用途ではオーバースペックですが、音質は問題ありません(テユーカそこまで真剣に鳴らすスピーカでもないですし、必要も無いので…)。
    筐体を含め、ボリウムつまみの質感は良いのですが、動作フィーリングはもう少し粘りがある方が好みです。
    ボリウムつまみの奥の青く光るLEDはもっと明るくても良いと思います。
    Customer image
    Kenji
    5.0 out of 5 stars
    PCスピーカ用に使ってます

    Reviewed in Japan on 14 July 2019
    出力50Wはアッシの用途ではオーバースペックですが、音質は問題ありません(テユーカそこまで真剣に鳴らすスピーカでもないですし、必要も無いので…)。
    筐体を含め、ボリウムつまみの質感は良いのですが、動作フィーリングはもう少し粘りがある方が好みです。
    ボリウムつまみの奥の青く光るLEDはもっと明るくても良いと思います。
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  • hn
    1.0 out of 5 stars 一ヶ月で壊れた。
    Reviewed in Japan on 9 November 2015
    Verified Purchase
    ある日音がおかしいと思ってチェックしたら、なんと左右のバランスが狂っておりました。
    いつの間にかボリュームを回すとノイズが入るようになりました。
    音はそこそこ・・・CPはなかなか? と思っておりましたが、
    さすがに1ヶ月で壊れるとは、イメージも悪くならざるえません・・・
    Report
  • 奥沢
    4.0 out of 5 stars 電源入らず返品＊アマゾンマーケットの別色へのリンクあり
    Reviewed in Japan on 16 June 2016
    Verified Purchase
    電源入らないと思い返品してまた買った、、、間違いでした　なんでそんな間違いをしたかといえば、電源オンで光るはずのLED９（ボリューム裏）が光らないから、正確には光っても見えません、これ同品の別色　SMSL SA-50 デジタルアンプ 50Wx2 T-AMP 高品質HIFI （銀）の「三番目の写真」のように、電源ランプが光るのかと（だって同じ製品だから）思ったが、まったく光っていることさえ確認できず、電源が入っていることをLEDでは判断不能　というか暗すぎて判断無理　これ改善して欲しい。

    肝心のアンプはクリア　入れた音がそのままでる感じ　特にバスレフのない密閉型のスピーカーとの相性はいいかと（YAMAHA １０Mなど）ボリューム最大でもノイズなしなのはデジタルゆえなのか驚いた。
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