Boss DD-20 sos

[Michał Wiernowolski <mihalw@gmail.com>]

Hello,

Quite recently I've got interested in looping. I'm using software for
practicing,
but I would prefer a hardware solution. It seems the DD-20 has much to 
offer
at a reasonable price, but I'm not sure whether it can do what I want.

Here is the scenario:
I'm creating some fading background (feedback<100%). At some point
I want to freeze it (feedback=100%) and play solo over it. It is important
that the solo part must not go into the loop. After the solo part I want to
unfreeze the loop (feedback<100%) and continue to play with it.

I'm aware this can be done with additional mixer and line selector,
(or in fact two for stereo,) but perhaps there is a simpler solution.

Thanks in advance for your help,
Michal