Di Zhao Alto Flute 100 Straight and Curved head joints

The DZA-401 is  silver plated and includes both the curved and straight head joint.  The Alto flute extends the range of the flute down to a G below middle C, and has a rich and haunting sound.  It's role and popularity has spread from adding depth to flute choirs to a having a growing collection of solos written specifically for the alto flute. Since the head joint is key to the tone quality of the flute, each head joint is hand-cut with undercuts and overcuts making it easy to produce a full and beautiful sound.  All pads are partially shimmed-a process usually reserved for professional flutes. Every flute is made to achieve smooth key action, fast response, and excellent resonance.  Master flute maker, Di Zhao tests and adjusts each instrument in the same manner that the top professional flutes in the U.S. are tested.  All flutes are tuned to A-442 pitch.

The Di Zhao flute is recommended by Chris Potter (chairperson of the Low Flutes Committee of the National Flute Association) in the below $3,000 price category of
alto flutes.  It has excellent response in the low register and an excellent scale.
After the 2009 National Flute Convention in NYC, it was obvious that the new Di Zhao's flutes were a huge hit. I only heard extremely positive comments posted on the various flute lists