Adcom 555se on a smart strip?


I'm thinking about a used Adcom 555se to power my new Ohm Walsh 4000s as recommended by John and Evan. This amp doesn't have a 12v trigger. My stereo "area" is the living room and the preamp will sit in the built-in cabinets next to the fireplace. I don't really want to put a high powered amp in the cabinet for ventilation reasons, so the basement seems like a good choice (and save space in the cabinets for more LPs). With no 12v trigger to power the amp on/off, I was thinking about having the preamp plugged into the control outlet of a smart power strip, and the amp plugged into one of the switched outlets. This will of course work for powering on, but I'm concerned about powering off. When powering off the preamp which will happen first, will it create a pop sound before the amp gets shut off? 

If this smart strip is a viable way to go in this situation, the used 555se will be a great cost savings. If not, I'll start looking at the Adcom 575se or maybe the Parasound A21+. 

Thanks guys and gals.
keysrawk

Showing 5 responses by keysrawk

I guess coming from the pro audio world and being a bit of a n00b with the hi-fi stuff, I'm confused as to how a 12v trigger powers off an amp appropriately. Maybe this doesn't matter as much in hi-fi. I always shut off amps first, then any other equipment. Perhaps the preamp and amp shut off exactly at the same time?

How could a Parasound P6 output trigger turn off the amp first before the P6 itself goes off? Or, for amps that have auto-sensing audio triggers (not 12 volt), they usually remain on for 5 minutes after no signal, then shut off. Does that mean I tell my wife and kids to wait 5 minutes after their done listening to music before shutting off the preamp? You know that isn't going to work.
Alright, sounds like the smart strip isn't a grand idea. I'm tempted to just stick the amp in the cabinet where it could be powered on and off manually. The cabinet isn't vented other than some grommets in the top at the back for wiring. Manual says 4" clearance around the vents of the amp and I have room in the cabinet for that. I can't imagine it's going to overheat to the point it will hurt the amp. I'd still rather keep it in the basement though. 

Not a huge fan of leaving it on not because of cost but just because it seems wasteful. I waste enough energy for the pool pump running 24x7. But it is an option.

It sounds like some people are saying that the 12v trigger doesn't cause a pop sound on power off. Seems specific to the rig though. Maybe I'm worrying about something that isn't worth worrying about. I'm not aware of any reasonably priced power conditioners that have triggers. Then again maybe I should just pay for an amp that has the triggers I want.

Class D could be cool - maybe I should really splurge with an NAD M33 and let it live on top of the cabinet because it's so pretty. 
I like the Nord suggestion. I have not dived into class D amp research much, but given my small space and heat/ventilation concerns, maybe I should. Maybe a Nord NC500 with a kick ass pre. Oooo, now I can go pre shopping. I was liking the Parasound P6 but if I forget this Adcom and go with a class D, maybe I should look at other pre's that match better. I will die without tone controls so whatever - if the class D is bright, turn down the highs. Purists can melt into a puddle.


I like the idea of just letting this amp in the basement idea go and putting it in the cabinet. The fireplace is gas and doesn't heat up anything really well being a vented box, so it's probably just fine.

Another amp (integrated) that Ohm said to take a look at was the Peachtree Nova 300. I could switch gears entirely and go with this class D to really save on space. I've never heard a class D amp and i know it has it's share of haters, but I'm not sure it matters to me since I'm not a critical listener - I move about while the music is playing. I need tone controls though so I could but a Schiit Loki in the loop output it has - but I also need to feed a separate premap for the outdoor speakers with it, so perhaps I can just use a RCA splitter at the loop output to do that (it has preamp out but that's not good for feeding another volume control). I'm assuming the loop output on that unit has a fixed volume like a REC out.

So, now I'm debating the 555se in the cabinet, or switching to the Peachtree Nova 300. This seems to be an ever evolving research project.