If you have any DIY skills I'd recommend making your own, even if you have to pay someone to make you a wood chassis. I'd get a pair of Shallco 31-position mono switches with circuit boards and resistors, from The Parts Connection, and a good selector switch from them, toggle if you need only two sources, rotary for three or more, good RCA or XLR connectors, and use good THIN internal signal wire. You'll end up with dual mono stepped attenuators equal to anything on the market at any price. If it were me, I'd ask TPC for a different selection of resistors and have 1 db steps of attenuation--the stock resistors give you roughly 2 db steps and you have MUCH more range of attenuation than you'll need. I'd be glad to advise further if this appeals to you. Look me up through Audiogon "Member Lookup" and email.
I've made three or four of these, and would never buy a commercial product. Most have at least one technical flaw and they all cost a LOT more than one needs to spend.
I've made three or four of these, and would never buy a commercial product. Most have at least one technical flaw and they all cost a LOT more than one needs to spend.