about as similar as an english sportscar and a dumptruck.
i find the mach series painful to listen to . many listeners like them , but i suspect some of
them were brought up on boomy car stereo systems where they grew accustomed
to an imbalance of deep bass and sizzly highs. a great rap / metal /electronic
disco speaker. super efficient .
A-25s could be considered the exact opposite- balanced ,with subdued bass,
natural midrange and ever slightly rolled off highs...excellent imaging from the huge
dome tweeter . a great jazz, acoustic music , classic rock , blues ,vocal speaker.
-not super efficient, will work with small amps but needs 70-120 watts to really shine.
i love mine with organ combos(jimmy smith,lonnie smith) and acoustic guitar(tony rice)