Rank #8 in Best Bookshelf Speakers 2026: 10 Ranked, From £94.99
Fosi Audio BT30D Pro 2.1 Bluetooth Amplifier, TPA3255
Price and rating as shown on Amazon when we collected them. Both change.
The Fosi Audio BT30D Pro is a 2.1 mini amplifier rather than a speaker: the listing gives it two sets of passive speaker outputs and one set of passive subwoofer outputs, so the speakers are yours to supply. It sits at number eight in this guide at £109.99, with 4.4 out of 5 from 1,901 ratings.
The number the listing leads with is the one that does not hold together. The BT30D Pro is advertised as delivering up to 165W x 2 + 350W, which comes to 680W in total, and the box contents list a 32V/5A power supply — 160W of input feeding a 680W output claim. The same listing states the item weight as 680 g. Everything on this page is taken from the Amazon listing as we received it; we have not measured, tested or listened to the amplifier ourselves.
How those 1,901 ratings break down
An average hides its own shape. This is the spread behind the 4.4 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £109.99 |
|---|---|
| Rating | 4.4 out of 5 from 1,901 ratings |
| Claimed output power | 165W x 2 + 350W (as listed) |
| Supplied power supply | 32V/5A, or 160W of input |
| Amplifier chips | Two Texas Instruments TPA3255 (as listed) |
| Bluetooth | 5.0, stated range up to 15 m (as listed) |
| Item weight | 680 g (as listed) |
| Outputs | Two sets of passive speaker outputs and one passive subwoofer output |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Surprisingly powerful amp. I built myself two floor standing speakers with 8-inch subs 6 in mids and tweeters. This amplifier drives them speakers brilliantly. Loud enough to annoy the neighbours. Five six doors down. The protection features means you can't cook the amp. I've turned it up far too high with the base and it just cuts out when stressed which protects the speaker when abused. For the price, I don't think you can get better.”
Verified purchase“Really impressive little box, i bought as a back up while my main amp is being fixed. drives 2 large mission mx5 speakers and a sub very well. super happy , small box, big power”
What it is up against
The rivals it was ranked against in Best Bookshelf Speakers 2026: 10 Ranked, From £94.99.
Questions people ask
How much power does the Fosi Audio BT30D Pro claim?
The listing states it outputs up to 165W x 2 + 350W, using two Texas Instruments TPA3255 Class-D amplifier chips.
What power supply is in the box?
The box contents list a 32V/5A power supply, alongside a Bluetooth antenna, the amplifier itself and a user manual.
Does the Fosi Audio BT30D Pro come with speakers?
No. The listing describes it as a 2.1 channel amplifier with two sets of passive speaker outputs and one passive subwoofer output, so speakers are bought separately.
Which Bluetooth version does it use?
Bluetooth 5.0, with a stated connection range of up to 15 metres.
How heavy is the Fosi Audio BT30D Pro?
The listing gives the item weight as 680 g.
What controls does the Fosi Audio BT30D Pro have?
The product name lists bass and treble controls, and the listing describes two dedicated subwoofer knobs, including a SUB FREQ knob for adjusting the frequency of a passive subwoofer.
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