Unfortunately, not true. The Transtubefex is the only one with the headphone jack.
You could use a headphone amp, connecting the left and/or right outputs to it. Peavey made a nice one, I see them on Ebay on occassion. Also there are other brands of headphone amps available that should accept the line level (1 volt RMS) output from the Profex 2. Here is one for you:
http://www.musiciansfriend.com/srs7/g=home/search/detail/base_pid/180615/
[This message was edited by Ken Fox on 17 August 2005 at 05:04 AM.]