The Rondo Gold set comes with two different E strings. The gold-plated E was of course very brilliant and a bit more prone to whistling (but as usual, this might just be what I expect and therefore I hear it that way). In comparison, the tin-plated E seemed to blend very well with the rest of the set. When I used the Rondo Golds with the Pirastro Gold E, the Rondo Golds sounded somewhat hard in comparison, even after two weeks of playing. Indeed, I found they had a certain hardness in their sound that I also observed in Evah Pirazzi Golds. Both sets are advertised as being more "golden" (darker?) variants of their brighter sister sets Rondo and Evah Pirazzi green. Maybe the sound of those strings simply becomes somewhat harder if the high frequencies are reduced?
I then switched to Rondos that I had played for about six weeks so far. I thought they were a bit thinner physically and had a mellower "sweeter" sound (more high frequencies) – I guess one can hear this on my recording (see below). Rondos also seemed to have a somewhat lower volume; coming from the Rondo Golds, the higher registers on A, D and G of the Rondos sounded relatively thin to my ears.
After two days, I switched to my old Dynamos – I'm still a fan of their warmish neutral sound. The only thing I was missing was the full and brilliant sound of the Rondo Golds on the higher register of the G string. I soon discovered that I was also missing some volume on D and A, so I switched back to Rondo Golds and will play them for a while. From the recording and from my personal feeling, it seems to me that Thomastik made the Rondo Golds a slightly more "soloistic" string than Rondos and Dynamos. One can hear on the recording that the response to bowing is a little delayed in comparison, which might be caused by a slightly larger diameter of the strings (if this is correct), aiming for a higher volume. Nonetheless, response is still excellent, and it is easy to play at very low volume and still have a satisfying sound.
Of course, it is unfair to compare Rondo Golds that were played for two weeks with Dynamos that are seven months old. I'll make a second comparison in about six months! The following recording was made when all three sets of strings had about the same age of two or three weeks (I recorded the Rondos and Dynamos earlier this year, using the same room and settings).
UPDATE: Four weeks with Thomastik Rondo Gold strings
I've now played Rondo Golds in several orchestra rehearsals and in a quintet rehearsal (Mendelssohn Op. 18). When playing quintet, I thought the sound of the Rondo Golds was surprisingly similar to the sound of the cello; and with the empty G and D, they had a certain bell-like character like Evah Pirazzi Golds (only in the Evah Golds, this character seems to disappear after the first few days...). I generally thought that Thomastik may have planned the Rondo Golds as an alternative to Evah Golds. However, I thought that both sets of strings are not for me and my violin, because both had a certain hardness in their sound that did not disappear after four weeks. At least it did not disappear in Rondo Golds: my quintet colleagues said the strings sounded good but slightly metallic, but that this might eventually disappear after the first days of playing them (but I had already played them for four weeks!).
So, I agree to where Thomastik has placed Rondo Golds in their string chart: to me, they are dark sounding strings (I think in their chart, "warm" means reduced high frequencies = dark. And yes, gold is probably darker than silver). Also, Rondo Golds did have this cracking at the beginning of a bow stroke that I knew from low tension strings and from gut strings. However, unlike Evah Golds, I thought that Rondo Golds also had some sweet high frequencies and a satisfying sound in pianissimo. It is just that when practicing Mozart Divertimento (KV 563) these days, I thought that the strings sounded too dark and not mellow enough for me, so today I switched to Peter Infeld strings.
Stay tuned for ... Rondo Adamantium......
As an aside, I see that Larsen has just released Il Cannone Gold strings, complete with the world's first gold-wound D string (not joking). They have an unusually high string tension, even compared to some of the other strings discussed in this chat.
I was looking for a string that was warmer than the Rondos and slightly less tension which compelled me to try the PIs. These Rondo golds seem like they could be a better option for me since they share similar DNA with the normal Rondos.
https://fiddlershop.com/products/larsen-il-cannone-gold-violin-string-set
Loot at those tensions:
G: 4.8 kg
D. 5.1 kg
A: 6.0 kg
E: 9.0 kg
That is insane! Are they going to be classified as "medium"? LMAO
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