This was posted 1 year 6 months 20 days ago, and might be an out-dated deal.

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20% off for Fosi Audio BT20A PRO 300W TPA3255 2 Channel Bluetooth Amplifier US$80 (~A$119.00) Delivered @ Fosi Audio

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20% off for Fosi Audio BT20A PRO 300W TPA3255 2 Channel Bluetooth Amplifier US$80 (~A$119.00) Delivered @ Fosi Audio
Go to Deal
MarketingFosi Audio on 13/04/2023 - 19:10 fosiaudioshop.com (363 clicks)
Last edited 13/04/2023 - 19:37
BT20APRO20

300 Watts x2 Power Output: Provided by the TI TPA3255 chip which features an advanced feedback design and proprietary high-speed gate driver error correction. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W.

High Efficiency: A significant upgrade from the BT20A amplifier. There're two plug-ins NE5532 Op-Amps can be replaced by MUSES02, OPA26041P, OPA2134PA Op-Amps etc. To create a different sound quality. SNR≥108dB; THD≤0.005%.

Upgraded Bluetooth 5.0 connectivity: By pressing and holding the volume control for five seconds, the Bluetooth pair can be cleared. In addition, it has a Bluetooth memory function, so it can be easily paired the next time. It also receives an alert tone.

Sound Control: With its unique design, the BT20A Pro amplifier for home audio has a wide range of bass and treble controls. Alternatively, you can turn the treble and bass effects to a middle point to listen to the original sound without effects.

Here is the measurement, https://www.audiosciencereview.com/forum/index.php?threads/f…

Electrical & Electronics Amplifier Bluetooth Amplifier Fosi Audio

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closed Comments

  • Watanabe1995 on 13/04/2023 - 19:23
    +3

    600W, unreal

    • MarketingFosi Audio @ Fosi Audio on 13/04/2023 - 19:25
      -1

      Just use difference power supply. Here is the review from ASR https://www.audiosciencereview.com/forum/index.php?threads/f…

      • WatchNerd on 13/04/2023 - 19:29
        +9

        Ok so it seems you haven't learnt from last time. Don't you think the title is misleading if you state 600W in the title but we need to buy a different power supply?

        • MarketingFosi Audio @ Fosi Audio on 13/04/2023 - 19:37
          -2

          I'm sorry, I have changed.

          • jong on 13/04/2023 - 19:57
            +5

            @Fosi Audio: Still says 300w x2 in the description; is that what you meant?

            (If you describe something as more powerful than it is in Australia, you run the risk of eBay/Paypal/the bank just reversing the transaction, meaning you've given away an amp for free)

            • tonyjzx on 13/04/2023 - 23:08
              -4

              @jong: it seems you guys are really really really adverse to following a link and reading a graph

              with the 48v psu it does 146w x 2 at 4 ohms in a 110v country

              its without doubt gonna hit 300w+ in a 240v country, however this is at 4 ohms so the seller is actually telling the truth

              69w at 8 ohm on the 48v psu

              40w at 8 ohm on the 32v psu

              i mean its all there… it just seems none of you guys have the least bit of interest in finding out for yourselves or maybe even the ability to read the graph… pretty sad

              btw. this is independent testing in the US but a unconnected party, i mean i dont know how else it can be more impartial

              • jong on 13/04/2023 - 23:12
                +3

                @tonyjzx: I didn't look at the graph because it's not my job to tell a vendor how to sell their product, is it?

                I just noticed they'd adjusted part of their ad but not the rest, and as a courtesy suggested they double check their description.

                Still, since you're so keen to work for free - it's bin night tonight, would you mind taking them out for me?

                • tonyjzx on 13/04/2023 - 23:15
                  -4

                  @jong: if youre in it sure thing

                  i find it funny how people seem to wear their ignorance on their sleeve as its a badge of honour

                  go you on your lack of any kind of curiousity or intelligence but par for the course here

                  funny how you think acquring knowledge is 'work', stay woke and dumb

                  btw. jong i gave you an updoot because youre obviously the bigger man with the downvotes lol

              • m9 on 14/04/2023 - 00:40
                +5

                @tonyjzx:

                it seems you guys are really really really adverse to following a link and reading a graph
                with the 48v psu it does 146w x 2 at 4 ohms in a 110v country
                its without doubt gonna hit 300w+ in a 240v country, however this is at 4 ohms so the seller is actually telling the truth

                Hold your horses Tony, the comments above (and some below) were made when the rep had 600W in the title, see revision history. Amir's graphs show that the 600W (300W x 2) claim is bullocks. You can't hit those numbers with the supplied 32V 5A PSU, or the optional 48V 5A PSU.

                i mean its all there… it just seems none of you guys have the least bit of interest in finding out for yourselves or maybe even the ability to read the graph… pretty sad

                They can say the same with you for not checking the revision history before going all guns blazing.

          • maverickjohn on 14/04/2023 - 10:35
            +2

            @Fosi Audio: If I were you I would add the PSU adapted and bump up the price. Then it's not misleading. Right now you are saying it's a 300w X 2 but only if you buy an optional adapter.. and that's only from the comments not even in the opening post. Everything in OP is misleading.

    • Lizard Spock on 13/04/2023 - 19:42
      +2

      The title of their Ebay listing also states 600W 🤔

  • BargainHunterJohnnyB on 13/04/2023 - 19:41

    $120 for this isn't OzBargain worthy - maybe $100 AUD and then it would be worth an OzBargain

  • scuderiarmani on 13/04/2023 - 20:14
    +6

    What's the real RMS figure, outta the box please?

    The 300w per channel figure is complete utter bullshit.

    • Tsapena on 13/04/2023 - 20:21
      +3

      Good call. 300w rms would drill your body to a wall

      • scuderiarmani on 13/04/2023 - 20:31
        +1

        That and it'd be the greatest value amp of all time… Regardless of quality.

    • doxxie on 13/04/2023 - 20:56
      +1

      probably about 13

    • scuderiarmani on 14/04/2023 - 18:28
      +1

      No response? Here, have a neg.

  • Jessie Ryder on 13/04/2023 - 21:40
    +1

    I hate BS marketing.
    Also, you need to answer questions that people ask.. just look at your old posts.

    • tonyjzx on 13/04/2023 - 23:37
      -7

      theres probalby an chinese language barrier problem and really, why would anyone bother

      its clear everyone here is dumb as

  • bigrizz on 13/04/2023 - 22:00

    Here's a link to a review with proper tested performance specs. It's still a good little amp but don't be deceived by the numbers quoted here. That said, few people realise how loud an amp with as little as 20W per channel can get. Watts aren't the whole story. The BS marketing numbers just confuse the uninitiated. FYI, I just bought this amp on eBay as I think it's great value for the performance. I paid about the same.

    • tonyjzx on 13/04/2023 - 23:30
      -2

      this effectively says the same thing as the ASR review but there's extra data from the 48v 5.2amp psu which does ~100w at 8 ohm which is kind of amazing for a $100 unit

      ~160w at 4 ohm that caveat being you need a psu that they dont sell

      i mean it clearly does at least 150w x 2 at 4 ohms with an appropriate psu so there's truth in advertising which many here dont want to admit

      there's an argument to be had about 8 or 4 ohms but i doubt anyone here would get it anyway

      • maverickjohn on 14/04/2023 - 10:39

        You are being quite nasty, not everyone can be a subject matter expert at everything. People also rely on credibility of the person you are buying from. In this case it wasn't there.

  • Nugs on 13/04/2023 - 22:06

    Different amp but not a glowing review
    https://www.audiosciencereview.com/forum/index.php?threads/f…
    .

  • BigBin on 14/04/2023 - 07:43
    +1

    A lot of carry-on about 80 bucks worth of amp. Seems pretty good value at either wattage or impedance. Relax people.

    • barg99 on 14/04/2023 - 08:07
      +1

      Welcome to ozbargain 🫶

    • maverickjohn on 14/04/2023 - 10:36
      +1

      It's just the ethics behind it. He isn't transparent in OP stating you need to purchase another adapter to get the stated wattage.

      • Ham Dragon on 14/04/2023 - 22:50
        +2

        This. Why should we be sympathetic because the reps can't be bothered to QC their posts (if giving the benefit of the doubt as to their claims), or suffer outright deceptive behaviour. Neither is acceptable, and we ought to maintain a standard. They are getting a captive audience, the least we can expect ie not to be bullshitted, or the claims to be valid.

  • crf529 on 16/04/2023 - 09:41
    +1

    Marketing aside, probably one of the best cheap Chinese D-class amps on the market right now. Ordered.

  • bneb on 16/04/2023 - 22:57

    Hey @Fosi Audio, I noticed that this is now available on Amazon AU and Ebay AU. However, it's only the version with the 32v power supply. Any plans to sell the version with the 48v supply in Australia? I'd prefer to order from a local retailer if possible, rather than fosiaudioshop.com.

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