ARC Ref 6 plexiglass cover

folkfreak writes that "[t]he cover has holes in it, so dust will get in anyway. At least with it off you can see and remove the dust, and if you’re bothered put it back, or another type of cover, when not listening"

I own several ARC pieces and they all have metal covers with air vents.  Can't say that I noticed excessive heat, but I'm sure dust works its way into all of my gear.  Why is dust a problem?  Does it affect performance or reliability?

If so, I could always use our home vacuum cleaner (with extension tubes) to clear the dust out.

Thanks.

BIF

@stereo5 ....I agree....ARC had to take into account now when they redesigned the new plexiglass cover about how much heat it could withstand. Wow what a difference . Its at least twice as thick as the original thin and flimsy plexi glass cover., You will not even be able to bend it its that thick. Also the front and 2 sides are beveled because it is higher than the chassis. Makes it look very nice too. Also i have a split system ac mounted on my wall behind the ARC 6 and with the ac on it blows ice cold air on top of the ARC 6 . No heat at all on the top of the 6550 power tube. It feels cold to the touch.. I didnt even think of this when i put my ARC 6 there until i started using the AC. But even if i didnt have the ac on with the new cover i would not even worry about it getting to hot and getting a heat warp bubble on top like my used 5 se when i bought it the first thing i noticed was that warp bubble on top of the 6550. Very unattractive. So now with the brand new Ref 6 and newly designed cover and the ac right on the wall in the back of the 6 i think i got the best of both worlds. Btw my ac split system is whisper quiet.   

@folkfreak   Marigo Mystery feet ...Wow they are very expensive. About $1400 for 3 ? 

Yep, the series H are $2k a set, but the upgrades are audible

the key issue with alternative footers on ARC preamps is clearance under the amp. There isn’t much room between the front of the amp and the raised under cover so larger footers will not fit. Putting the footers only on the metal under cover sounds terrible.  In the case of the Marigo you need to have it half on the frame and half on the under cover which is not ideal but works

@folkfreak ..... Putting footers only on the metal under cover...  I thought you had the plexiglass undercover. Dont you have the Ref 40?