“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
“I put the Tellurium Q Silver [range] power cables in my system and haven’t wanted to take them out… they all justify their price points and will improve the sound quality of whatever you plug them into.”
“The Silver Diamond is the sweet spot of the range and gives you the biggest bang for the buck. It gets you closest to what the Statement power cable will give you. Improved clarity, bass, presence and control.”
– Terry Ellis, Pursuit Perfect System
“I am using a 28 year old Pioneer A300R Precision amplifier instead of my TAD pre and power amps until My amp is repaired. I Fitted one of the silver diamond power cables to my Pioneer PD-70AE SACD player, the quality of sound from the two pioneers is incredible. The SACD player is really good but with the silver diamond power cable it has been transformed. There is no way you would think that you are listening to a £400 amplifier. The cables keep getting better and better.”
– Jim Desmond, Ireland
“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
“After only ten seconds of listening, I found that the overall sound field has undergone subtle changes. Not only has it become larger and grander, but the details of weak sounds have a clearer outline, and the faint and trivial sound effects that are usually difficult to detect have also become very obvious. …The most commendable thing is that the tone is still so bright and beautiful, all of which brought me a joyful surprise.”
– Thomas Wang, HiFi Review
“Silver Diamond takes this midrange clarity and energy and builds significantly on it. There’s more than a touch of Tellurium Q’s ‘Statement’ cable to Silver Diamond, and that means more space around the instruments, more frequency extension (top and bottom, but with that, yet more of that energy and clarity of Silver), and more dynamic range let through.”
– Alan Sircom, HiFi Plus product of the Year
“There’s more than a touch of Tellurium Q’s ‘Statement’ cable to Silver Diamond, and that means more space around the instruments, more
frequency extension…. Interestingly, this is not just an exercise in expense; I used Silver Diamond to affect significantly a Leben integrated amplifier that cost only slightly more than the cable itself. But if all your audio ducks are in a row, Silver Diamond can make an already singing system sound like it just got Aretha and the Monteverdi Choir stepping up to the microphone.”
– Alan Sircom, HiFi Plus
“….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
“Good heavens, this was no subtle improvement. The Yamaha seemed to have somehow gained volume and resolving capability and the music was absolutely cascading from the Harbeth’s small main drive units in a way that I had not previously heard. This was a serious sit up and take notice moment.
In the right context they might turn out be the best ‘bang for buck’ upgrade you could buy.”
– Chris Kelly, The Ear
“True to form, Tellurium Q products have a smooth and sophisticated sound, but never sound dull or veiled; the Silver epitomises this and the Silver Diamond adds extra insight and scale. Both are there or thereabouts in terms of being the best value at their respective price points, especially the Silver Diamond, which is hard to beat at any level. Tastefully turned out, superbly built and sonically excellent – both are state-of-the-art power cables that don’t disappoint.”
– Jay Garrett, Stereonet
Stereonet | Applause Award
HiFi Plus | Editors Choice 2026
The Ear | Five Stars
The Audiophile Man | Deeply Groovy
HiFi and Music Source | Best of 2025
Stereonet | Product of the Year 2025
HiFi Plus | Best Loudspeaker Cable 2025
HiFi Pig | Pick of 2024
Mono & Stereo | Best of 2024
The Ear | Best of 2024
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Tel: +44 (0) 1458 251 997
