All Bach leadpipes in use today are freer than the 25 (Except the 6, used on the TR300). But they each have different degrees and types of openness. the 25-O has a similar sound to the 25, the 43 is brighter, the 44 is even brighter, and the 7 is darker than the 25. There's also reverse tuning slide. Each one is different and none of them are the end all for a free blow. As Rowuk said:
Quote:
Originally Posted by rowuk  Resistance is not a pure mechanical phenomenon. How well you hear the instrument makes a big difference in how you perceive the blow. |
Although the 43 does seem to be one or the most popular leadpipes (up there with 25 reversed).
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Daniel Lan
"In you're not improving, you're falling behind." - My Trumpet Teacher, Steve
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