At a single glance, Audio Pro speakers look very bulky and spacious that serves as a huge turnoff. However, if you love your speakers to have that traditional touch like Audio Pro C5A, looks won’t be an issue for you. The increased power and driver and cabinet size predictably ushers a grander performance each step you take up the chain, with the Addon C10 particularly able to rattle trinkets from the mantelpiece or twist our insides with its low-end authority. Though there is a pair of unknown quantities in the Audio Pro line-up as far as we’re concerned – the Addon C-Sub can help those smaller speakers delve deeper into the low frequencies, while the A40 is set to receive a wider release following its design for the company’s 40th anniversary– our time spent with the rest of the company’s speakers allows us to confidently celebrate it as the best-sounding multi-room suite available for the money. These are limited to optical and analogue auxiliary - though with a 3.5mm-to-RCA cable included, connecting to pretty much any existing set up could hardly be easier.

It's fair to say that the sound isn't the sweetest around, but it is essentially smooth and very even-handed, with a lively and expressive disposition and an impressive openness that is particularly engaging with voices in general, but especially on speech.

On top of the sub is the second part of the Drumfire’s set-up, containing two 11cm woofers and a 25mm tweeter. This box has an RCA input for an external analogue source, as well as an ethernet port and 3.5mm input. The bugs are neither constant nor devastating, but the odd stutter and hang – particularly when pairing or splitting speakers – gets annoying in a short time. Each comprises the 'koala bear' driver configuration that has become these speakers’ distinguishing feature, with a pair of 2cm soft dome tweeters and mid/bass drivers (and reflex ports, incidentally) growing in line with the cabinet. You can also change the source in the Audio Pro app. Select the device where the turntable/CD-player is plugged in to.

It doesn’t produce a particularly wide soundstage. However, there were plenty of times where I’d stopped what I was doing and just listen. No matter where I placed the speaker, so long as it was facing outwards, it sounded great. As the Addon C10 is to the Addon C3, similarly the Drumfire’s better-honed talents run further than the added power and bottom end over its family members – it is again a step up in terms of performance across the board.

Specification

The A10’s design means it won’t take up space on a table or desktop. You will need to place it close to a mains plug to power it, though. You shouldn’t buy it if… So, about that Connect/Reset button. It’s a small change that has a significant impact. The Connect button on the A10 enabled the speaker to join Audio Pro’s web of connected speakers. With Google onboard, that’s no longer possible. But it’s important to point out the Audio Pro is far from the most limited multi-room app out there, and its occasional bug and rudimentary nature is forgivable when you consider the price and sound quality of the speakers it's controlling. All four speakers house a large circular volume control flanked by sets of four smaller buttons on the top: for power-on, play/pause, input selection and Bluetooth pairing to the left, and pre-sets to its right. Our latest speaker tests include models from Audio Pro, Marley, Bluesound and Fresh 'n Rebel, including two stylish portable speakers that look ideal for using out and about, and two home Alexa speakers for controlling with your voice.