The Mach One, whether normal or hooked, sits higher on the shoulder itself, suggesting that the chin at least must be over the tail piece, whatever the model.
I have a Teka-style chinrest, much carved in the spirit of the Wave chinrest, so my chin is over (not on) the tailpiece and my jaw "escapes" via the dip in the edge. I use a Kun bravo, but I wish to try the Mach one for its "hook".
Anyone who wishes can look me up on Facebook and see my public profile picture in which I am using, though you can’t see it, a Mach One.
I used a centre chin rest on my violin up to Toronto Conservatory Level 10. I quit after this and didn't touch the violin again for almost 3 decades. When I started again, I was using the standard left side chin rest, and found this completely comfortable. However, when I restarted, I bought the extra long arms for the shoulder rest. As my skills developed, however this became uncomfortable. Now, I make the legs as short as possible and was seriously considering removing the shoulder rest altogether and just using a pad so as to avoid wood against bone. I no longer feel the same need to grip the violin and there is much more freedom. My desire for this isn't about comfort but rather, I'm finding more range on the violin freeing that space that is "closed" with a standard shoulder rest. My wife told me I'd have more range high on the g-string if I brought violin more forward, only to discover I couldn't because shoulder rest was in the way. It helped to lower the legs. It also helps to put the shoulder rest deeper into the body of the violin for some people, crossing the widest point on the violin body. This offers the same support, but gives more range of motion. You barely feel the shoulder rest, but it stops the violin from sliding.
Anyhow, don't assume that the non standard centre chin rest is the best option for you. You're obviously not comfortable with your current setup. What is the shape of your upper body? Do you have a long neck and a rather underdeveloped chest and shoulders?
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