"Q Acoustics’ floorstanding soundbar replacements are obviously more focused on music than they are on movies and TV, but they still sound phenomenal for both...For music, the M40 are an excellent all-in-one choice for the discerning listener who doesn’t want a full-fledged hi-fi system."

"Q Acoustics has decent form in powered speakers with the fabulous M20 but even so, the M40 HD raises the game considerably...It represents all the system that many people will ever need and it represents formidable value for money. This is one of the reasons why 'Hi-Fi systems' are changing shape but when the result is this good, we're not going to stand in the way of progress."

"It has very natural tonality, which is one of Q Acoustics best attributes…great timbre, great clarity, great realism and a huge soundstage...I love the M40. It is the first powered speaker that I’ve really liked. The first powered speaker that can hang on its own without a subwoofer...At $1,000 this is a bargain and put out way more bass than it has any right too. "

"Fun is back. And not a moment too soon…the Q Acoustics M40 micro-towers soar over the wireless speaker competition priced under $1,000…Are they worth $999 USD? Without question."

"The M40s sound great, look good, and sonically punch well above their size…in real-world conditions, the mini towers managed to be relatively unobtrusive while sounding anything but. Maybe, just maybe, it really is what you do with it that counts…These punchy mini-tower speakers are hugely impressive and highly recommended."

"'Convenience' ceased to be a dirty word in hi-fi circles some time ago, and Q Acoustics has long been on a mission to rehabilitate the word 'affordable' too. With the M40, the company has combined convenience with affordability, added a hefty dose of performance, and manifested it in a compact package that's easy to live with and enjoy."

"The Q Acoustics M40 is another fun and thoroughly engaging speaker system that plays nicely with a range of sources. This micro tower is easy to accommodate, less conspicuously hi-fi in its looks, and packs a rich, warm performance… in terms of opening up a new space within the market, I think Q Acoustics is onto a winner with the M40."

"(Slightly) big and (certainly) clever, the M40 HD is Q Acoustics doing what Q Acoustics does best...If you want some full-scale streaming performance from a slightly-less-than-full-scale system at a less-than-full-on price, you won’t go far wrong here."

"This is a just-add-smartphone complete system that’s simplicity itself to set up and operate….There are many admirable aspects of the sound quality available here, but most immediately impressive is just how much of it there is…Smaller room? Suddenly that’s no impediment to getting a bigger sound - and without breaking the bank, either.…it’s hard to find fault with the M40 HD’s presentation."