I've done a lot of research on the Yamaha saxophones (I already mentioned I ran saxpics.com for 10 years). You can see it at http://www.thesax.info/mediawiki-1.10.0/index.php?title=Yamaha
Whenever I question if a Yamaha is a little bit of this model or that model, I look at the Yamaha Parts List. All three instruments share some parts, but the 23 and 25 share a lot. The 275 has a lot more unique parts than the 25.
YAS-275
YAS-25
YAS-23
Hey. The 275 has parts that are used on the 62. That's kinda kewl.
FWIW, I think you're referring to the layout of the G#/C#/B/Bb cluster and keyrods. I'll definitely grant that the 275's and 25's look more similar to each other than the 23, but I'm more interested in the body tube. Unfortunately, each body tube has different part numbers. So, you could say:
* All of 'em are pretty much different.
* All of 'em share a bunch of parts, but the 23 and 25 have the most parts in common.
* The 25 and 275 look a lot alike, but there are a lot of dissimilar parts.
The Vito 7131, I had always heard, was a copy of the YAS-25, not the 23. Amusingly, I can't find good pictures of the 7131. If someone has one, post 'em! Prove me right or wrong! (The pic I have linked to doesn't have an altissimo F#, so that = YAS-23, so you're right and I'm wrong. For now )
Whenever I question if a Yamaha is a little bit of this model or that model, I look at the Yamaha Parts List. All three instruments share some parts, but the 23 and 25 share a lot. The 275 has a lot more unique parts than the 25.
YAS-275
YAS-25
YAS-23
Hey. The 275 has parts that are used on the 62. That's kinda kewl.
FWIW, I think you're referring to the layout of the G#/C#/B/Bb cluster and keyrods. I'll definitely grant that the 275's and 25's look more similar to each other than the 23, but I'm more interested in the body tube. Unfortunately, each body tube has different part numbers. So, you could say:
* All of 'em are pretty much different.
* All of 'em share a bunch of parts, but the 23 and 25 have the most parts in common.
* The 25 and 275 look a lot alike, but there are a lot of dissimilar parts.
The Vito 7131, I had always heard, was a copy of the YAS-25, not the 23. Amusingly, I can't find good pictures of the 7131. If someone has one, post 'em! Prove me right or wrong! (The pic I have linked to doesn't have an altissimo F#, so that = YAS-23, so you're right and I'm wrong. For now )