Gee… its such a long time ago, that I added first a SNAPS and then a HiCap…!
My HiCap #1 is from 1986 (I have 2 HiCaps, powering my 82…).
I would Just Do It… My 2nd HiCap (which is Olive) cost me £375 from TomTom, preloved, in 2012. Probably more like £450 now. Factor in a service, which will be at least £200 (thats what I paid in 2021) and will be good to go…!
Has your 140 been serviced in the last 8 to 10 years…? If not… it should be.
Great pic. Speakers look in good shape. Have you ever had these serviced? I understand the rubber seals dry up over the years. Got my setup second hand two years ago and thought I might get a few years out of them before needing serious attention.
I remember I replaced the crossover in my ES14 back then.
In fact its not a crossover but a single capacitor behind tweeter.
I went with same type of replacement capacitor as I would like to keep them as close to original as possible.
That was maybe 15+ years ago.
Even then it was a huge “upgrade” so to speak, it proves those things have a limited lifespan as they obviously dry out.
A Hicap will be a nice upgrade, so would a Nap 250, as I understand this is the amp they are developed by.