Shop by Price


Online orders & demonstration rooms are operating as normal. Read more here »

Synergistic Research 5 x 20mm SR-20 Quantum Fuse T
Zoom  Zoom

Synergistic Research 5 x 20mm SR-20 Quantum Fuse T

  (7 Reviews)
£33.29 Exc. VAT |  



Synergistic Research 5 x 20mm SR-20 Quantum Fuse T - Slow Blow

Please Note: Priced Per Single Fuse 

Available in the following ratings: 

  • 100mA, 160mA, 200mA, 250mA, 315mA, 500mA, 630mA, 800mA
  • 1A, 1.6A, 2A, 2.5A, 3.15A, 4A, 5A, 6.3A, 8A, 10A, 12.5A, 16A 

Synergistic Research Quantum Fuses employ a custom alloy treated with 2,000,000 volts of electricity! With over 60 values to choose from, you’re sure to find the perfect value for your system’s components.

Also available in 6.3 x 32 mm Fast Blow or Slow Blow versions and 5 x 20 mm Fast Blow, please see the separate listing or contact us. 

Average Rating (7 Reviews):  
Write a Review and share your opinions!

Believe the hype
Wednesday, 16 December 2020  | 

Nearly £40 for a simple fuse seems to many like madness however the difference it makes is well worth it. As with mains cables it is the fuse closest to the source that makes the most difference (so forget your house wiring etc). Why I don't know but I've been at this game now as a hifi enthusiast for over 40 years and about 25 years ago I somewhat sceptically entered this murky world of mains cables and fuses by accident when I was given some to evaluate. They do make a difference and the difference with good equipment is not slight but massive! I used this as the input fuse for my new Leak cdt and it turned what was already a good sound into one where I was hearing much more detail and 3 dimensionality. Bandwidth seemed to be much improved as well. At first it was a little 'harsh' after putting in for the first time but sure enough after 200 hours (standby use is good enough for this) it sweetened and all the fullness and detail came through. I know that there'll be some who will cry 'snake oil' or 'confirmation bias' but I can tell you that even my un audiophile wife can hear the difference. It isn't just a small difference, it is very plain to hear. I don't know how all this works and according to the 'electronics manual' it shouldn't but it definitely does and if you've got anywhere near a decent system this is really the best £40 you'll ever spend.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Effectively upgrading amplifiers
Friday, 16 October 2020  | 

I suspended my 'snake-oil-audiofoolia' response and took a - modest - punt. Result: v pleasantly surprised: it was like I had upgraded my Roksan K3/K3 Power amps (which handily have prise-out power input fuse holders): more detail & definition; a cleaner, more focused, communicative sound.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Best upgrade without breaking the bank !
Sunday, 26 July 2020  | 

Each fuse got its sound characteristics.
Can do good or harm your system performance.
Keeping that in mind, mine is pretty neutral and I compared the SR20 to a Furutech Rhodium.

The SR is better in every aspect.

The sound is more natural with much better focus and the layers are well separated : what a treat !

I used it on a digital transport where it helps bringing a more analog style sound... the goal here is to forget Digital sucks and The SR20 fuses are doing well !

Was this helpful to you?  Yes  /  No

This review has not been appraised.

very suprised
Saturday, 15 April 2017  | 

I didnt believe that it can make any difference. But wanted to try to tweak my audio system. Very very surprised with the new sound of my amplifier. I can say that the sound became much pleasant and musical as i expected reading the reviews.

Was this helpful to you?  Yes  /  No

0 of 1 people found this review helpful.

Synergistic Research 20 /5mm 4amp slow blow fuse..
Saturday, 27 June 2015  | 

In a nutshell they work. Soundstage, separation, clarity all improve as well as bass, mid & trble response. If you haven't looked into upgrading mains cables & fuses then do so you will not be disappointed. A really significant improvement can be made for not a great deal of money, look into DIY mains cables, connectors & fuses you'll be glad you did.. All in all a top quality product with a top quality service from Analogue Seduction..

Was this helpful to you?  Yes  /  No

This review has not been appraised.

A New Lease of Life
Wednesday, 10 June 2015  | 

I already own the Red 13amp Quantum fuses that feed each separate component of my HiFi. However I replaced the 2 standard internal fuses in my Chord Electronics SPM600 amplifier with SR20 250V t6.3amp slow blow fuses.
It was well worth the expense and has improved a very good amp's performance to the next level without having to buy a new one. It's like having a new amp at the fraction of the cost.
After a few days settle in period, they have given an overall evenly balanced and detail sound. Timbre and the naturalness of instruments has improved whilst voices are clearer allowing the emotion of the artist to come through. The performance of the amp has improved across all the frequency ranges. Bass is not deeper, but just more natural and balanced. Just sounds right. As a consequence, I just can't stop listening to music. Brilliant.
If your equipment uses internal fuses, you won't regret upgrading to these.

Was this helpful to you?  Yes  /  No

1 of 1 people found this review helpful.

SR-20 fuses
Friday, 14 March 2014  | 

I would like to say the service has been fantastic and l was unsure about trying these SR-20 fuses butwith the 30 day return i thought go for it after reading up about how good these fuses were. Iv tried most fuses but as soon as l replaces my hi fi tuning fuses for the SR -20's in my amp ans cd'player it was instant, everything was better, mid range, better tighter bass and more detail, more fuller spaced sound, guitar cords were just amazing, these fuses do work, one of the best up grades l have ever made and would certanly recommend them, simply amazing fuses, l strongly advise you to give them a try, fantastic upgrade. Paul

Was this helpful to you?  Yes  /  No

2 of 2 people found this review helpful.

01733 350 878
GBP EURO USD YEN   TOTAL: £0.00    View Basket 
Analogue Seduction