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Thomastik Spirocore Double Bass Strings, SET

By Thomastik

Our price:
from £199.68 inc VAT & Free Delivery in the UK
You save:
£27.95 (12%)
VAT removed at checkout for non EU orders

Purchase options

4/4 scale (110cm), Medium tension
2 in stock
4/4 scale high tension (Stark)
Despatch will be delayed
4/4 scale low tension (Weich)
2 in stock
3/4 scale (106cm), medium tension.
2 in stock
3/4 scale, Low tension (Weich)
2 in stock
1/2 size (96.5cm scale)
1 in stock
1/2 size, Low tension (Weich)
Despatch will be delayed
1/4 size (90.5cm scale)
Currently unavailable
£200.05 Currently unavailable

* All strings are ball end, unless otherwise specified.

Shop for single strings and/or alternative tensions


Spirocore strings have a flexible multiwire spiral rope core which results in a longer vibration period with reduced inertia. They are highly responsive and long lasting and are ideal for both pizzicato and bowing. Widely regarded as the reference standard in double bass strings.


  • Steel rope core
  • All sizes
  • Made in Austria

Customer reviews:

Rating Summary
25/08/2011 16:22
Brighton, United Kingdom


Spirocore Light, (Weich), very nice strings
9 out of 11 found the following review helpful

Pros: I got the light, (weich), set. Still loud, like the normal, (medium) set but not harsh or metallic sounding. They are much easier on the fingers due to the very low tension, (several pounds pull less on each string than most other sets). They bow very easily with a warm clear sound, very expressive. Pizz playing, which I do mostly they give a clear round fundamental tone, but with good 2nd and 3rd harmonics present, making for a fat round sound. So overall they play like gut strings but sound fatter and rounder and bigger. Very warm and clear.

Cons: None really.

Other: If you are used to playing gut strings, then these light spiros will feel very slim under the fingers. However they are very elastic and flexible like the gut.

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19/06/2012 20:33
Letchworth, United Kingdom


Thomastik equals Fantastik
4 out of 5 found the following review helpful

Pros: Nice full round sound. Easy to play. Good pizzicato - have not done bowing yet.

Cons: My set of strings did not arrive with a complementary bottle of Remy Martin Cognac.

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26/10/2011 19:32
Hereford, United Kingdom


They sound great and have excellent tension
2 out of 3 found the following review helpful

Pros: They sound great and have excellent tension

Cons: none

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Tom D
21/05/2019 18:05
Cornwall, United Kingdom

Keen Amateur

Brilliant strings for jazz & pizzicato work

Pros: I’ve been using Spirocores for a few years now. They produce a lovely bright pizzicato tone with plenty of “bite”, and work very well for jazz playing. They retain their character well as they age, too. I’m sure there are better strings for arco work, but they work just fine for my purposes.y

Cons: The only drawback really is the price. Thankfully us double bassists don’t get through strings as fast! You do get what you pay for, though.

Other: The last pack I ordered had a “dead” G string - String Zone were most prompt and helpful about sending me a replacement and getting the faulty one back to them. Top customer service.

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28/02/2018 16:00
Leatherhead, United Kingdom


Good all round strings

Pros: Good all round strings

Cons: None

Other: I was using a set of medium tension strings that I found just too difficult to work, so I feel weichs are a must for beginners. These are good for piz and arco.

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11/12/2015 19:07
Bradford, United Kingdom

Keen Amateur

Great double bass strings!

Pros: Quality Strings - great quality, easy to play, great sound.

Cons: Not cheap!

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07/09/2015 16:48
Upper Beeding, United Kingdom

Keen Amateur

I love Thomastik Spirocores

Pros: Great strings - excellent for jazz pizz. Work ok for arco, too. Love these strings and have the equivalent on my two bass guitars as well. Thomastik strings rock.

Cons: None - as far as I am concerned.

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15/07/2015 08:07
EXETER, United Kingdom

Keen Amateur

Superior strings for ease of playing.

Pros: Have been using Spirocore mediums for years then after a 20 year break from Double bass playing have returned with a new Wilfer Lion Head 3/4 Bass and after lowering the action fitted Spirocore Weich strings. They are just so good giving a much lighter feel and brighter with more sustain. Simply put they are the best for jazzing! They arco well too and facilitate faster passages. On the Wilfer bass the tone is just amazing. Not cheap though.

Cons: Price.

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Eistrophe Smith
14/07/2015 18:35
Bristol, United Kingdom


Spirocore, a classic all round double bass string

Pros: I purchased the strings for my electric upright bass and found them to work pretty well on it. I used to use Spirocore hybrid strings because, although I'm a jazz bassist, I do a lot of bowing and thought a hybrid string was the best option. I found the classic Spirocore works much better and responds to the bow movement quicker.

Cons: Can't see any particular down side to them, excluding the price of strings in general.

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14/07/2015 07:44
Reading, United Kingdom


Great sound

Pros: The strings were on my bass when I bourght it and I was very happy with the sound and feel so I replaced them with the same, Great sound and last a long time.

Cons: I liked averything about the strings

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