This is a lovely whistle which was given me for Christmas by my lovely wife:
The top whistle is the Burke Brass Pro narrow bore; the lower whistle is my Burke AlPro.
Here is a sound file, the old song “Down by the Sally Gardens,” where both parts of the duet are played on the Brass Pro:
http://www.flutesite.com/samples/sallyburke.mp3
This is a visually striking, lovely little whistle. It has a bit of heft compared to the Alpro, which I like. The finish and workmanship are perfect in every way.
Intonation is absolutely precise through a better variety of blowing pressures than I figured it would be. A minor quibble is that this whistle requires ( o x x |x o x ) for an in-tune first octave C-natural, where I prefer (o x x | o o o ), which is sharp on this whistle at all but the lowest blowing pressures. Normal fingering for 2nd octave C-natural (o x o | x x x ) works fine.
This whistle doesn’t seem to have an upper limit on how high it can be played. Using fife fingerings I have played well into the 3rd octave and the whistle stays well in tune and even pleasant to listen to!
I was also afraid the lowest notes would be sacrificed for the lovely second octave, but they aren’t: I am pleased to report the low register is rich and dark and not weak at all.
Overall the tone of this whistle is incredibly pure and clean, with just a touch of overtones providing a touch of a lovely darkness to the sound.
This is an outstanding whistle, pure, crystal clear, with volume capacity ranging from soft to moderate, a lovely dark tone against the brighter purity of the AlPro. Together, these are the best whistles I have–it would be hard to have to pick between them. They are both that good, and both are head and shoulders above any other whistle I own.
–James