[musictlk] Feeding my IPhone and Bass guitar both into my headphones

[Robert Moore]

                Does anyone make a portable device that one can plug an
IPhone and a bass guitar into and feed them both into a  pair of headphones
for the purpose of practice 

 I would like to be able to control the volume of the phone and the bass
seperatly  If there is such a thing on the market, what kind of cost would I
be looking at? 

 My point for this kind of practice device is that I play by ear and at this
point I really do not have  enough space in our little hous to have a
usefull practice area without it bothering my wife.  

Robert 

 Any low cost ideas or solutions would be appreciated. 

 Thanks