has anyone had any experience with an adapter such as this?

[Link: mcmelectronics.com];

Do they work?  Any other adapters that I should look at instead?

Got a boat where the install is complete and now the owner wants to add a Sirius tuner.  Phono is our last available input.

It's cheap enough- why not give it a shot? Maybe you could experiment at home, rather than roll the truck. 35+ years in the business and this is the first time I have seen one of these.
OTOH, Sirius sounds so tinny that maybe sending it right in would make it sound better. Is this for a receiver? Does it have input level settings that allow attenuation?

I am in NJ, the boat is in Florida.  Our guys in Florida will handle the work since the boat is docked right next to our office.  I would test it if I had time, but the owner wants this done by Tuesday and we have a short work week. I was hoping to find someone that has done this before.

It is the the Marantz SR6007 receiver listed in my title.  The phono input has a built in preamp, so it can't be used with line level without some sort of modification. 

I read the reviews on the link and they were favorable, but no personal history with it. Sorry. All of the digital inputs are used too, eh?

thanks, i need to be able to distribute this to zone 2, so I have to stick to analog.

i ordered the part, fingers crossed that it works.

It will probably work. It only takes a few capacitors and resistors, some of which should be 1% values for best fidelity, to make this work, so it should cost about $59, but it will likely be close.

I'd really only wonder about one thing -- since phono jacks have ground connections for the turntable ground, will this thing properly be quiet when fed into a phono input?

In the early 70s I did a similar thing with a phono circuit, jacking it up to line level, then reducing it to phono level, so we could compare the phono preamps of about twenty audio receivers. Worked like a charm, and now that I remember it, without any need for the ground connection.

Someone will ask, so: No. We put the phono signal through a PS Audio II Preamp (back when PS Audio did audio) from which we had gutted the EQ circuit. We fed the resulting line level unequalized phono signal through a store demo-type switcher, then dropped the voltage to phono level with a couple of resistors behind the receivers. No hum, no switching transients, and we really could hear the differences in some phono preamp sections of receivers.

Why not get a analog audio switch?

that is an option, but I'm trying to keep the programming/installation simple and all 12 ports of my MSC400 are used up.

We used one from MCM several years ago with a Yamaha phono input with fine results. I have no idea if it was the exact same model but it looks similar and would tend to think it was since our van "I-Parts" account was for purchases via MCM. It should work.

I have had good results.....Actually I have changed a few resistors to match the low output from SA cable boxes

For a moment there I thought you said "why not JUST get an analog switch?" Glad you didn't.

This device passively converts a useless input into another input. Its installation requires placing it where the cables will reach and plugging it in to the RCA jacks.

An analog audio switch will require either that the client walk over and push a button, which is not a good option from the remote control concept of things. Or:
Have an open power outlet
connect to power outlet
move some input from the AVR to one of the inputs of the switch
add your second input to this switch
add a short cable to the AVR
program the remote with a macro for each of those signals, consisting of AVR input + switch remote code
perhaps add ANALOG mode command so AVR doesn't look at a digital input where you're plugging it in.

All in all, the passive box seems to be better.

While typing that, I remembered a way that I made an additional input for a guy, using no hardware at all -- I left his DVD digital input signal as it was and added DIGITAL input mode to the input selection, then plugged the new analog source into DVD with the selection macro DVD - ANALOG.
This had the single drawback that DVD would not play through zone 2 as the system no longer had an analog DVD audio signal.

Thanks for the replies.  I will let you know how the part works.   

I am going to move the Sirius audio over to the CD input, and connect the TV audio output through the phono adapter and plug that into the phono input instead.  The chances of them using the TV audio output are pretty slim, since it is really only used when they want to plug into the dockside cable connection.  So if the audio is affected in any way, I'd rather have it be on that device.