It's been a long time since I had to worry about Volume pedals.
Realisticly, you're still going to need a simple, "small mixer - volume pedal-PA(or whatever)" connection.
It's the cleanest way to do it.
Getting into weird connections is going to add extra noise (the only downside of analog IN/Outs).
Boss is OK, but a bit noisy. "Boss" is not really for keyboards, even their top of the line processors can be used as white noise generators,). And most "Boss" stuff is "Line", so some stuff's gonna distort.
If I needed a volume pedal, I'd have one custom built/ Not cheap, but not noisy either. I'd even avoid 1/4 connections and go balanced XLR instead. But that 's just me.(how many synths and small mixers have balanced outs, right?)
ED


[This message has been edited by 3351 (edited 09-10-2003).]