First, thanks for all the replies, much appreciated and a lot of good suggestions.
Unfortunately, the guy who had the LV-103U for sale, sold it to someone else despite having agreed to sell it to me... So, for now, I'm on a single LV-103U, but I do see these pop up every now and then here in Denmark, so perhaps in the future I'll pick one up. Still, I have a few questions/answers to the different replies:
#2 I'm aware what the word redundancy/redundant means, but not in this context. I'm very new to everything hifi, so any hints would be greatly appreciated. Tried googling "amplifier redundancy" and the like, but didn't really find anything that made sense. :b
#3 Unfortunately not (as far as I can tell). I'm running a pair of Cerwin-Vega A 103s.
#4 You're very right, I really enjoy this amp as it is. Don't know if they are modable?
#5 I'll definitely pick one up as spare, should the opportunity occur again. And I think that's a good way to go about, replacing components with something straight up better, not just something different. Not sure I get this "vertical improvement makes more sense than horizontal redundancy".
#6 Spares are definitely nice.
#7 Very true, unfortunately it slipped away, but I'll keep looking.
#8 That sounds interesting, if I get a second one, I might look into it.
#9 That's the one - and yeah, keeping one as spare makes sense.
#10 Good suggestion, and a second set of speakers would be nice regardless.
Again, thanks for all the suggestions and input, much appreciated!
Now, as a bit of a twist to it all, I picked up a Denon POA-2200 Power Amplifier a couple of days ago at an insanely low price (by DK standards). It works/sounds really well, cosmetically it's a bit "worn" to say the least - the power button won't stay in by itself, so I have to put a small piece of whatever to get it stuck/keep it powered on. Any suggestions how to fix something like this - or what it should cost at a technician? As far as I can tell it's just the button that's worn out after many on/offs.
Anyways, I'm not sure I'll keep it, might resell a bit further down the road, but for now I'd like to test it a bit more and get it up and running in my setup. However, I don't own a pre-amplifier currently, so I was wondering if I could use my LV-103U temporarily as a pre-amp? It has "Signal Processor In & Out" on the back which I'm currently using to run the signal into a Kenwood equalizer and back. Now I'm wondering if I could run the signal from my Luxman LV-103U into my Kenwood EQ and then onwards into my Denon POA-2200? Is "Signal Processor In & Out" the equivalent of "Pre-out & Main-in" on other integrated amplifiers?