I have three of them... one in each case, except for the XOH in my Make Noise case... great little headphone out module...
-- DroneAlone

How does the sound quality compare to the XOH or similar? I'm thinking of switching my XOH for an HPO to save some hp, and since i only have one voice i dont really need mixing capabillities. And im very, very rarely run the modular through my monitors anyway..