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Boomers are indeed a step towards flats compared with most nickel rounds. Round core boomers are another small step beyond regular Boomers in that same direction. And yes I’m a boomer, so if you want advice about Boomers from a boomer, I’m your guy.
If neither of those is Claris enough, Pressurewounds are the next step
In addition to my previous post I might also add that if you like the Rotosound Swingbass 66 nickels and just want to go SLIGHTLY warmer there's also the Rotosound Rotobass strings. Both are nickel plated steel but the cheaper Rotobass strings are closer to "middle of the road" nickel plated steel strings from other manufacturers.
I've been using either Roto Swing nickels (on my jazz) or nickel Lo Riders (changed my P to this) for years. That's the tension/stiffness I like, and I want something deeper sounding, without losing the top end of most flats. I've been thinking of trying GHS nickel plated Boomers (Products - BASS BOOMERS® - GHS Strings).
Can someone tell me how they would compare, both in terms of feel and sound? Many thanks.
I haven’t tried NLRs before, but Bass Boomers are my favorite NPS strings, and I have Rotosound SB-66s on one of my basses.
Feel-wise, Boomers have a smidge more string tension than SB-66’s, but overall they feel very similar. In surface texture, Boomers feel slightly smoother, but that might just be that I’m more accustomed to them, but in this regard they’re also very close IMO.
Both sets have a strong, punchy low end. I feel SB-66’s have more high mids, whereas Boomers have more low mids. I feel SB-66’s have more high end than Boomers, both when they’re brand new, and after they’re broken in.
I feel both sets are excellent. And IMHO broken in, they’re more similar than they are different. Boomers have a darker sound, but in the live mix, I find them very audible. SB-66’s have a high mids punch that makes them cut through the mix beautifully.
Fyi...
We have confirmation directly from Rotosound that the Swing Bass 66 Nickels and the Roto Bass are exactly the same strings except for the blue silk; there is no difference in terms of materials or construction otherwise. That would also mean no difference in tone.
That's strange because I have confirmation directly from Rotosound that they use different type of wire and are NOT identical. I asked them because I read here on talkbass that they are identical but my ears told me something different.
Are you talking about "SB-66" as in Stainless Steel or Nickel?
Interesting... And thanks for the info. Now I don't know what to believe. Maybe I should just stay out of discussions on Roto strings.![]()
I once did an almighty amount of Internet searching on this topic, which brought me previous posts from you. It is certainly true that Rotosound have changed their story on the difference between these two strings more than once. Sometimes what they've said simply hasn't added up. The last time they were asked, which was this year, they said the strings are the same (which, of course, doesn't mean they always were...)won't rule out the possibility that the Rotosound rep I talked to gave me incorrect information

I once did an almighty amount of Internet searching on this topic, which brought me previous posts from you. It is certainly true that Rotosound have changed their story on the difference between these two strings more than once. Sometimes what they've said simply hasn't added up. The last time they were asked, which was this year, they said the strings are the same (which, of course, doesn't mean they always were...)
To my regret, I never found another post like the long one of yours from a few years ago detailing the differences between the Swing Bass Nickels and the Roto Bass.
For what it's worth, I've a set of the 45-105 Roto Bass on my BB424 and like them very much. If my shoulder hadn't fallen out with that bass, I would have played them a lot more. The next time I buy Roto Nickels, I intend to get the Swing Bass version and see if I can detect any difference in feel or sound. If I can't, I'll be happy to have frittered away an extra 5 quid on some pretty silks, just the once![]()
I just heard back from Rotosound regarding the difference between the Roto Bass and the Nickel Swing Bass.
Here's what "Jack" from Rotosound wrote:
"Yes, they are constructed the same way using the same material – except for the silk."
Here's the report of the most recent comment from Roto Customer Service:
Which is written in the present tense with no reference to the past.
That's strange because I have confirmation directly from Rotosound that they use different type of wire and are NOT identical. I asked them because I read here on talkbass that they are identical but my ears told me something different.
In my experience the Rotobass sets go dead (or mellow out, depending on how you look at it) very fast but the Swingbass 66 nickels take a very long time to lose the metallic zing/clank.
I trust my ears over any internet rumours and I stopped using Rotobass because they went dead too fast for me and not in a good way. I generally like warm/mellow strings but I didn't like the way Rotobass strings mellowed out. They just became totally lifeless.
The 66 nickels on the other hand are a touch too clanky/metallic in the upper mids for my taste and it took me forever to get rid of that metallic, zingy tone. They're good strings but if I want the classic Roto tone I prefer 66 steels. For nickel I prefer other brands.
Have you actually tried these strings yourself?
Of course I won't completely rule out the possibility that the 3-4 sets of Rotobass that I've tried were all from a bad batch AND that the Rotosound rep I talked to gave me incorrect information but it seems highly unlikely. Until proven otherwise I will say Rotobass and Swingbass 66 nickels are NOT the same strings.