Silver Family


Silver Diamond Speaker Cable

Speaker Cables  >  Silver Diamond
Silver Diamond Speaker Cable
UK retail price per single metre
Purchase example: 2.5m stereo pair would contain 5 single metres (2.5m to each channel). This also allows you to order uneven lengths e.g. 2m left channel/3m right channel. So, 2.5m pair = 5 single metres x £1108.62 which is a total of £5543.10.
Upper Echelon Class
HiFi Plus Awards 2016
Equipment of the Year 2018-2019
HiFi World Best Loudspeaker 2015
HiFi World 5 Globes
HiFi Pig - Outstanding Product
Tone Audio Product of the Year 2016
Stereo Times Most Wanted Components USA
Wave Online
HiFi Plus Innovation Award 2021
Silver Diamond Speaker Cable

The Silver Diamond are the cables that we were not sure could be made (although we hoped they would be possible). If you read through the “Our Focus” section on the website, we talk about the fact that any cable from any manufacturer is an electronic filter, whether you want it to be or not – that is just a fact of life. Being a filter, any cable causes relative phase relationship issues for the signal. We have taken our research and development that was outlined in “Our Focus” and just tried to push the concept of a neutral filter as far as we thought it was possible to give you a highly transparent, natural and “real” presentation.

So what’s different? Well, compared to the Black Diamond, which was our award winning multi-product of the year cable, the Silver Diamond has even better bass definition, improved detail and a more extended top end (without any harshness) and something else which people are finding hard to define, simply because they have not heard it before. As one of the first people to hear the cable said, there is a “certain rightness” to the sound and that is because we have got closer to achieving our goal in cable development and have signal transmission than ever before, and you can hear it. Perhaps an analogy would be to talk about the Black Diamond as HD image quality, whereas the Silver Diamond gives you 4K Ultra HD quality with 3D effortlessly thrown in for good measure.

This cable behaves differently to our others, needing a run through of track three from our System disc to properly embed it, before listening on a new system even when it is run in – almost like conditioning the system to make the most of the cable’s abilities. It may sound a bit strange that a system needs to be tuned up or put in tune to get the most from this cable, but the cable is something quite unique as you will hear if you get the chance to listen to a system using it.

We are very proud to have this cable finally crowning our ranges.

Silver Banana Connector
Silver Spade Connector

Note: All Tellurium Q Speaker cables can be Bi-wired by adding an extra cable during manufacture.

Performance Profile
Blue Family
Warm and forgiving for systems with a slight edge or for those who like a more smooth laid back presentation. Blue and Ultra Blue are especially good for AV and home cinema
Black Family
Smooth, fine detailed and great resolution while actually reducing apparent harshness. Music is presented as a coherent, organic whole, with a jaw-dropping sense of realism and naturalness.
Silver Family
Totally uncoloured, acting as a wide open channel sounding unforced, vivid and dynamic with phenomenal resolution, transparency and natural tonal colours. All this while sounding extremely analog and coherent, from the exceptional top end extension to bottom with finely detailed, separated bass notes.
Reviews and User Comments
The Wave Online

“For me, Silver Diamond series signal cable is one of the most impressive products of the year. It conveys details very realistically and giving a natural, clean sound with full power. Significantly, it maintains tonal balance and the phase is more accurate than some signal cables that are almost twice more expensive than this cable.”

– Wijit Boonchoo, Wave Online
The Wave Online
“….the Silver Diamond cable is a unique cable….It is a whole set of cables that gives the most “natural” sound, which is an outstanding feature that impresses me. Other outstanding features are both dynamic The extension range in the light. Giving a soft sound to listen to Indulge in a deep sense of music. Access to the realism of the sounds from each musical instrument, airy, clean, at a level In our lives we rarely meet”
– Wijit Boonchoo, Wave Online
What HiFi Thailand
“I think this cable makes the amplifier and speakers show the highest performance without any color. One of the best and dynamic details I’ve ever heard.”
– Dawn Nathong, What HiFi Thailand
Sound Stage Australia

“I was so impressed by what the Silver Diamond was doing with the bass – among other things, of course – that I started sifting through my music collection seeking out the best bass content…..To conclude, I’d have to reinforce how impressed I was, and how much I enjoyed, having the Tellurium Q Silver Diamond in the system. It is balanced, natural, and neutral and draws the best from your electronics and speakers…

Nailed it.”

– Edgar Kramer, Sound Stage
The Audiophile Man

“The Silver Diamond speaker cables offered a tremendous tonal realism, clarity and detail combined with a naturalistic flow. You don’t feel that music is bumping its head on any unnatural music boundaries which means there is less subconscious tension around the soundstage and that relaxation I mentioned flows in abundance. You feel that you could listen to your music for hours (and hours).The Silver Diamond standard should arrive with a government warning, it’s dangerously easy to listen to these cables.”

– Paul Rigby, The Audiophile Man
Audiophile Videophile
“a euphoric power will liberate freedom, according to the music. Listen, and then feel special, pleasing for this generation of silver diamond cable”
– Audiophile Videophile
HiFi HiEnd Test
“Tellurium Q Silver Diamond is a product of the audio sphere, which can easily demolish all our current assumptions on how a speaker cable should or should not “play”. The above statement is perhaps trivial, but it is justifiable and strongly related to what we hear just after the first contact with this cable, and even what we build assumptions based on the information obtained. Its impact on the sound is very clear and you do not have to attentively listen to the system for a prolonged period of time, as the differences are clear just after the first contact with this cable.”
– HiFi HiEnd Test
HiFi Pig
“These are the best cables I have used in my system… period… and I do not say that lightly! They have been in and out and compared with other cables we have to hand and every time they are taken out there’s an immediate “nope, get them back in” comment from Linette or myself. What they do is difficult to put your finger on exactly; there’s a feeling of rightness and a sense that you are getting closer to the feeling of the music in an emotional sense. There’s more detail, more space…and they just sound right.”
– Stuart Smith, HiFi Pig
Hiend News

“The [Silver Diamond] cable change has brought an elevation in every aspect of the listening pleasure. They cost quite a sum of money, but what they offer; to even a small system such as this is, is arguably worth every penny they do part you with.I knew they were good, but what I didn’t know is that it can make something great, sound astonishingly real”

– Tony Pothitos, Hiend News
Tone Audio
“Should you be a cable sceptic, this is the one to try. The results are not subtle, with no change in tonality or balance. Just more music everywhere is the word. The Silver Diamond cables impart less of a sonic signature than so many other, so much more expensive cables we’ve tried. Every cable sceptic we know has been bowled over by the Silver Diamond cables.”
– Tone Audio, Awards 2016
HiFi Plus
“They [Tellurium Q] focus on Silver Diamond’s ability to act as less of a filter than most cables, and that this performance is particularly well suited toward high-end systems. When the cables are used in that context, asserts Alan Sircom, “Silver Diamond is extraordinary transparent, satisfyingly open, full-bodied, with an awesome bass, and extremely sweet and smooth across the mid-range.”
– HiFi Plus Awards Issue
HiFi Plus
“Silver Diamond is extraordinarily transparent, satisfyingly open, full-bodied, with an awesome bass, and extremely sweet and smooth across the midrange.”
– Alan Sircom, HiFi Plus
Sound Rebels
“Solidly crafted, elegant…. defies all rules and attempts to categorize ….they are a class in themselves”
– Marcin Olszewski, Sound Rebels
Tone Audio

“If you’re looking for a major jump in your system’s performance, I’d suggest buying a pair of these instead of considering a hardware upgrade. Before you write this advice off to cable delusion, expectation bias, or the recent Mercury retrograde phase, please take note: I have never said this inTONE’s 11-year history.Value is a highly relative subject; cable is nearly always a hotspot and I admit to being more prejudiced against spending big money on it, yet the Tellurium Q Silver Diamond speaker cables deliver more music than anything I’ve yet experienced. I highly suggest auditioning them the next time you’re considering spending some money on a system upgrade.”

– Jeff Dorgay, Tone Audio
Stereo Times
“The added resolution, ‘rightness’ and musical truth they impart, while besting cables costing far more than their price point, is your reward for not needing to read specs.”
– Stereo Times, Most Wanted Components Award 2015
AV Premium
“Changes mindsets….Glorious musicality incredible price”
– Salvador Dangla, AV Premium 2015
HiFi World
“The Silver Diamonds are undoubtedly their best loudspeaker cable yet. They are totally uncoloured – instead acting as a wide open channel between amplifier and ‘speakers and so letting more of the music flow through to let you know exactly what the rest of the system is doing.”
– HiFi World, Product of the Year Awards
High Fidelity
“I couldn’t detect any shifts in tonal balance – sound always seemed “normal”, meaning the way I expected it to. I think that most people when comparing it with other cables will find its sound bit richer than with others, like it adds some weight to the sound. I also thought so at the beginning and spend a considerable amount of time listening to recordings where any sort of coloration would have been obvious and unwanted – I mean ones with vocals and piano. And I found out that Silver Diamond added absolutely nothing. It was all about natural richness and density of the sound, and about above average number of information delivered in bass range. It might sound “richer” than other cables simply because these others are not able to deliver comparable richness and as much information as Tellurium Q can. Not even my Tara Labs, although it comes really close.”
– Wojciech Pacula,, 2015
HiFi World
“Admittedly, £800-a-metre may seem a lot to spend on a set of loudspeaker cables. But I’d say that the Silver Diamonds actually stand comparison with rivals costing significantly more, such as Nordost’s Frey 2 (£1800 per metre) which – while excellent – to my ears lack some of the unforced naturalness of the Silver Diamonds.”
– Jon Myles, Hifi World 2015
Mono & Stereo

“Well, I have just stumbled upon a speaker cable that I`m very tempted to put in a class of its own – but I won`t because what we have here is “just” a product that raises the bar of what’s achievable in this field – they`re true SOTA (state of the art) speaker cables and although they`re not cheap, they don`t cost a fortune either. In general: we should try to reserve the term SOTA only for truly outstanding products (regardless of price) and the Tellurium Q Silver Diamonds just happen to be one of them.In my view, the Tellurium Q Silver Diamond speaker cables represent a major achievement in the realm of state of the art loudspeaker cabling. The way they manage to combine phenomenal resolution, transparency and natural tonal colours, while sounding extremely analog and coherent, top to bottom, is almost unbelievable. They sound incredibly unforced, vivid and dynamic at the same time.”

– Mono & Stereo, June 2015
Mario Tantra
“The cables are amazing… it makes the FOCAL sound much better. The harshness of the Beryllium is much more controllable. The bass is more dynamic, full and tight. The staging is wide … even the speaker position is close.”
– Mario Tantra, MDI Audio, Indonesia

“A delighted customer that took the incredible step of getting rid of all his cabling that he had only installed six months previously!!!. This is what he said in a note to our Spanish distributor: “Paco… I want to thank you that a few months ago you sent me the (Tellurium Q Silver Diamond) cables to test them in my system… and be able to appreciate its qualities!I liked them.

But now that all my cables are Tellurium [Q] and paired with tubes the result is MAGIC.
The “naturalness” of those cables, a quality that I like so much, together with all the other attributes, offer a sound that is very pleasant to me and get deep into my soul. The realism of each and every instrument is so huge that I’ve only found something similar in two systems (extremely expensive) from all the auditions that I’ve done over the time.

It’s clear that I’ve achieved also a synergy among all the components of my sound system… otherwise the sound could be very good, but never be MAGIC.

In the flight case that you sent to me there was only one pair of RCA interconnect. The other pair that my system needs I used a [cable brand name removed] although the sound was very good, it never reached the quality that I have right now, with all Tellurium [Q] cabling.”


– Mario, Spain
Steven Lucas

“Thank you very much David for sending the Diamond Silver’s they are stupendous! I thought the Diamond Blacks were brilliant but now I’ve heard the Diamond Silvers I never want to listen with anything else. I am lost for words, beyond belief. They have turned my listening room into a music hall. I never thought for one minute they would sound this good! However anyone can achieve this perfection is beyond me. I have never heard any other hi-fi product this outstanding! Thank you”

– Steven Lucas, Norwich
Razvan Stanciulescu

“Speaker cable S.D [Silver Diamond] is great, one of the best speaker cable I’ve heard in my life, well done, sound is different now from 50-100 hours of burn, sound is great”

– Razvan Stanciulescu, AV Sound Romania
Francisco Moya

“Dear Geoff, Once the Silver Diamond has been fully break-in, I made some serious test this weekend.

Test included:
Silver Diamond SPDIF VS Graphite SPDIF (old model, new one was with a customer)
Silver Diamond RCA VS Ultra Silver RCA
Silver Diamond Loudspeaker VS Ultra Silver Loudspeaker

Initially all the system were wired with Silver Diamond cables… we found the sound excellent. The first thing we made was changing the SPDIF SD with the Graphite. Difference was huge: everything was blured, the piano was now much less vivid… less real, it sounded muffled by comparison. Metals sounded now thing… there was much less metal and the same time there was less “air”. Bass was now boomy and had lost a lot of details. The image was now smaller in the 3 axis… Them we put back the SD SPDIF to confirm what we heard.

Now it was time to change the RCA interconnect. The effect was pretty much the same… and also when we changed the loudspeaker cable. The differences with SPDIF, RCA and loudspeaker was allways in similar terms, so we can say that you have come to an exceptional cable range, coherent and excellent sounding. I can’t imagine using another cable from now… maybe the next top of the line from Tellurium Q.

We found something interesting: it’s better to start with the loudspeaker cable, as all the rest of the changes are much more notable. I mean, with the Ultra Silver loudspeaker cable in place, the change in the rest of the cables was noticeable, but the difference was huge when the SD loudspeaker was in place. The same happens with the rest of the cables, but it was more evident with the loudspeaker cable. So, anyone with the SD loudspeaker cable in place, will buy yes or yes, the rest of the SD range for his system. Congratulations Geoff and the rest of the Tellurium Q team!!!”

– Francisco Moya, Director Tecnico audioHUM, Spain

Fraser Robertson

“Quite difficult to put your finger on why or what makes it so much just sounds very right..detailed but full sounding with a great sense of excitement to the music..brilliant!”

– Fraser Robertson, UK Distributor, Kog Audio

Simon Lomax

“Having used them in my system for mixing and mastering I would now describe them as ESSENTIAL and they are not leaving my system”

– Simon Lomax, music production