The SUBPAC M1 and M2 will no longer be made! The upgrades in the M2x include: Increased dynamic range which gives a more open, accurate and natural representation of your music especially for acoustic genres, lower total harmonic distortion which guarantees a better definition even at higher levels, and a huge 8+ hours of battery use time.
Just got my M2 for christmas after wanting this for yeras. I am shocked to learn the hard way that there is a new version.
Regarding the description above, “the more open, accurate and natural representation” is meant for the bass coming form the SubPac or the headphones pluged into the SubPac. If the second is the case, wouldn’t a Y headphone splitter cable do the same?