[Elecraft] K3 Hardware Upgrades

[Dave G4AON]

I have now done all the hardware mods to my K3, none were particularly
difficult to do. I even did modifications that are of no use to me, such
as the -ve ALC and "pull up" resistor mods... At least my K3 is close to
the same mod state as the current production units. The AF amplifier
(replacement RF choke feeding the audio amp) did not seem to make any
difference at my station, I am using a pair of HiFi bookshelf speakers.
Likewise the line out mod didn't appear to make any difference, although
for the most part I run Amtor or Pactor rather than sound card data modes.

There is no real reason to not do these mods, they have no unwanted side
effects and may in fact be of benefit.

73 Dave, G4AON
K3/100 #80
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I did -not- apply the AF Stage upgrade for LINE OUT and speaker
can anyone suggest that there is a perceptable difference to be heard
with this?