Is it good for a Krell to SIT for 3-5yrs

Not to avoid Krell...Just make sure Dealers/sellers dont take advantage of you.I have been searching for a KSA300s that was a 9/10 and serviced...AND found one that was just recapped last May and in 9/10 condition for a ""FAIR""" price.They are out there.
But funny thing was that I contacted 4 dealers who are selling some 12+yr old amps,never serviced(or maybe only one was out of 2 monoblocks)and act as if there overpriced Item is a DEAL. So watch out.

Well I have to say that the 300s that I am going to sell is a killer amp.It is fully recapped and this is the only way to buy these amps.Do not buy a 17 yr old KSA 300s unless it has been recapped($1500)...unless you get one in good shape for $1500.They have great bass and sonics.I had to get a 600(minimum) for my big speakers.Dont let the critics fool you when they say negative things about this amp.I have had the KSA 250/300s & FPB 600c/700cx.

McSound: Just my 2 cents worth. Suggest you try a Sanders Sound Systems Magtech amp before you jump on a Krell. I owned a Krell FPB-200 for several years. The Sanders is a better sounding amp in every respect IMHO and you can try it for 30 days at no charge and it comes with a lifetime warranty. What do you have to lose by trying it? 500 watts into 8 ohms, 900 watts into 4 ohms and it will deliver that 900 watts down to l ohms. Check Sanders website and give them a call. You wont be sorry I think. Good luck in whatever you decide upon.

Got a non-working /kSA300s and had to recap. I replaced the old Sprague caps to Nichicons. spend 60 bucks. Changed both sides. Perfectly woeking now