Wharfedale Diamond 12.1i: One-minute review

The Wharfedale Diamond 12i standmount speakers are the latest in the line of ‘Diamond’ speakers that has, one way and another, been around since 1982. The most recent (and wildly acclaimed) series, the Diamond 12, launched back in 2020 – so it’s about time the Diamond 12i range made an appearance.

(Obviously not everyone loves a ‘13’ name, and Wharfedale is open enough to acknowledge that this new range of loudspeakers is not a ground-up redesign of the range it’s replacing – so ‘12i’ it is.)

The Wharfedale Diamond 12.1i tested here is a two-way bookshelf (or, more accurately, standmount – I’ll come back to this) design that sells for the same £249 that the outgoing Diamond 12.1 launched at – which does, of course, mean it’s less expensive in real terms. It’s not a situation that occurs all that often with the sort of hi-fi equipment I deal with. In the US, the new model costs $499, and in Australia it’s AU$699.

But if you think Wharfedale has cut corners to get the Diamond 12.1i to market at this very aggressive price, think again. Build quality is more than acceptable. The trio of available finishes look (and even feel) good. Best of all, though, is the way the Diamond 12.1i sound. They’re perfectly OK at lower volumes – but let them loose even just a little and they really come to life, combining insight, balanced, dynamic potency and simple entertainment to periodically thrilling effect.

The specification (with highlights including a 25mm woven polyester tweeter, a 130mm mid/bass driver made from mica-enhanced polypropylene, a carefully tuned rear-facing bass reflex port, and some very judicious cabinet bracing), results in a speaker that’s easy to drive and has a frequency response of 65Hz – 20kHz.

The front baffle of each Wharfedale features the tweeter positioned behind a minimal waveguide – the idea is to expose the driver as much as possible in an effort to achieve wide dispersion. Below here is the 130mm ‘Klarity’ mid/bass driver, backed by a substantial magnet with an aluminum compensation ring, with a voice coil that’s wound on a glass-fibre/epoxy resin bobbin.

The crossover between the two drivers is positioned at a sensible 2.6kHz, and is performed by a Linkwitz-Riley network featuring air-core inductors – it has been specified with minimal phase-shift and smooth integration in mind.

Wharfedale’s description of the Diamond 12.1i as a ‘bookshelf’ speaker is, I think, just a little bit naughty. Yes, you may have a bookshelf big enough to accommodate the cabinet’s 250mm depth (which rises to 280mm once you include the speaker binding posts, and more if your speaker cable is terminated with plugs) – but when you factor in the breathing space the rear-facing reflex port needs, even the deepest shelf is unlikely offer the breathing space the Wharfedale require. Let’s just go with ‘standmount’ and leave it at that, shall we?

At 312 x 180 x 250(ish)mm (HxWxD) the Diamond 12.1i are tidily proportioned for standmounts, and the standard of build and finish is more than good enough to justify the asking price. Both of the available colors (‘deep’ black and ‘stone’ grey) are in a kind of semi-matt finish that looks nice (to me, at least), isn’t all that reflective and is actually slightly soft to the touch. Your other option is ‘classic’ walnut, and I will have to reserve judgment on its qualities as I have yet to see (or feel) it.

Each of the finishes is supplied with magnetically attached, full-length grilles finished in black fabric – it certainly makes for a clean look, but I feel it’s a shame to hide the mildly shiny driver surrounds and clean overall appearance. You may feel differently.

On the inside, the Diamond 12.1i feature minimal and carefully targeted ‘spot’ bracing designed to keep both resonance and resonance transfer to a minimum. In conjunction with cabinet walls of varying thickness, plus the resonant properties of the glue holding everything together taken into account, this is a slightly more sophisticated piece of engineering and design than the asking price might lead you to believe.

Some loudspeakers don’t alter their character no matter the volume level you’re listening at. The Wharfedale Diamond 12.1.i don’t undergo drastic volume-related changes, I must emphasize – but at very modest volume levels they can sound just a little matter-of-fact. All you need to do is nudge the level north just a little, though, and these speakers come bounding to life – and then they reveal themselves to be one of the very best budget options around.

Detail levels are impressive, too, so there’s plenty of variation where tone and texture are concerned to go along with the straight-ahead punch. Transition into the midrange is clean, and once there the Wharfedale demonstrate a similarly insightful and animated attitude – the details of attitude and character in the voice are just as readily available as those regarding phrasing and technique.

At the top of the frequency range, the Diamond 12.1i have quite sensibly decided that discretion is the better part of valor, staying relatively constrained in the mix – but although the highest rebel sounds are dialed down just a little, there’s still no shortage of bite or the overall enthusiasm for attack.

With the discretion at the very top of the frequency range borne in mind, the frequency response here is nicely even and even-handed – and while the overall tonality has a nice little suggestion of heat to it, it’s not even close to becoming overcooked.

The attention to detail the speakers pay extends to the most transient or fleeting harmonic variation, and there’s a respectable amount of dynamic headroom available for when the tune shifts through the ‘volume and intensity’ gears.

Soundstaging is convincing, and the Diamond 12i are able to escape the confines of their cabinets, just a little, in every direction. The layout of the stage is plain, and while the Diamond 12.1i manage to give every participant on it just a little breathing space they’re capable of offering a sense of unity and togetherness at the same time.

The Wharfedale seem in no way demanding of their partnering equipment, either – they don’t get flustered by sitting at the end of a disproportionately expensive system, and they don’t seem to mind being driven by some standard all-in-one electronics costing less than they do. There are qualitative differences, of course – but broadly speaking the Diamond 12.1i are easy-going and adaptable.

Bear in mind that the Diamond 12.1i, just like every other pair of passive loudspeakers, needs a degree of ‘running in’ before they sound how they are intended to sound – certainly you should ensure they have quite a few hours on the clock before you judge them.

The entry-level in passive loudspeakers has enjoyed a very successful decade so far – and this is in no small part thanks to Wharfedale’s efforts. Yes, the company has inspired some very credible rivals to take this area of the market properly seriously (I’m thinking particularly of the excellent Dali Kupid), but there’s just no getting around the fact the Diamond 12.1i offer prodigious value for money in every respect.

They look and feel more expensive than they are, and once they’re properly positioned they sound it too. Unless you’re been suckered in by the promise of an actually bookshelf-friendly design, I cannot think of a single meaningful downside to Wharfedale Diamond 12.1i ownership.

Wharfedale Diamond 12.1i review: Price & release date

• Launched in December 2025
• Priced at $499 / £249 / AU$699

The new Wharfedale Diamond 12i range of entry-level loudspeakers launched in December of 2025. This 12.1i model is, at £249 in the UK, the second-least-expensive of the five-strong newest Diamond range of stereo speakers. In the United States it sells for $499, while in Australia the going rate is AU$699.

This compares very favorably to options from the likes of Dali, Monitor Audio or Q Acoustics.

Should I buy the Wharfedale Diamond 12.1i?

Buy them if…