The XM126 is simply the vauum tube version with an output power supply. 

There are different output impedance characteristics than the XM44, that help this piece mate with certain vacuum tube amplifiers better. 

This also allows you a spot to tube roll, if you so desire. 


Also made to order and confiugurable as a 2,3,or 4-way channel, call and contact before placing your order.

Marchand Electronics XM126 Vacuum Tube Electronic Crossover (BASE MODEL)