You do have a very good point regarding speaker quality, so yes I have started looking around at what speakers could possibly replace them. At least they have never been in storage, they went directly from my grandfathers house to mine.
Do they work at all? Since you have a working receiver (one that you're somewhat eager to see die, even), I would check that first. What speakers are you currently using with the receiver?
But here's the rub: the current amp is such a low end thing (Yamaha RX-V357 home-theatre AV-receiver) that someone in the "Schiit Happened" thread already replied to my first inquiries, that this thing "really makes music unlistenable". And that's what my wife has been telling me since we got it, but I never yet could be motivated to think about upgrading since anything we would look at, if we would like the sound of it then it would instantly be far above our limited budget. But with a bit of Schiit, I might finally see a way to gradually improve the sound quality without breaking the bank.
But the ****ty amp must go first. No pair of speakers will sound good with that AV-receiver-amp-thing. And when I have a good amp, I can use that as a basis for a speaker-search, and take my time for that.
That's kinda my current plan.
As the owner of an RX-V377, I suspect that's fair.
I was using it with the Yamaha NS-SP1800BL, a 5.1 surround set that I paid $135 for ($180 for the receiver). Much later I got great headphones and wanted to enjoy music with speakers, too, but didn't with this system.
I thought I primarily needed better speakers since the Yamaha seemed reasonably powerful. Checking out the KEF LS50, Chris Livengood (with Audio Vision SF at the time) suggested there's no point with that amp. That spooked me, so I got a Vidar and a SYS, and used an iFi nano iDSD as the DAC. I tried them with the stupid little Yamaha satellites and the cute 8" ported subwoofer that has no phase adjustments or built-in crossover, just a volume knob.
Holy Schiit! Music! It sounded so much better already, I was shocked.
That initial comparison was so stark that I never bothered to try other speakers with the Yamaha receiver, only with Vidar and now Ragnarok 2. I probably should, just for giggles. I did use it as a headphone amp for one review, and it has that same killing-the-music ability there.
Generally, yes, transducers are where you should start, but at least my cheap Yamaha receiver is simply not capable of revealing a speaker's potential, so upgrading that in some fashion seems vital.
I've also used the Jotunheim as a preamp into Vidar for a bit, and a Topping DX7s as a DAC/preamp combo. Saga in passive mode sounded roughly the same, Saga active turns on a spotlight in the center of the sound stage that I don't want to miss anymore. Both the stock tube and LISST did that, but I stayed with LISST. The Ragnarok 2 as an amp, or as a preamp into the Vidar, has that same quality.
Since you're looking for something to grow with, I'd consider Freya S (or +) instead of one of the Sagas, it gives you more flexibility down the line in terms of adding another Aegir (apparently often a solution if it doesn't quite have enough oomph), or hooking up a truly balanced DAC. I still have to experiment, but Bifrost 2 is only "cheap ass balanced" (much like Chord DACs), so single ended into Freya S or Ragnarok 2 (Nexus either way) could potentially be even better than relying on the opamps in Bifrost 2 for the conversion to balanced.
In my case, an Audioquest Niagara 1000 made a huge difference in the sound of my speaker rig, but it only has one high current outlet. I upgraded to the 1200, which has two such outlets, one for Ragnarok 2, the other for my subwoofer. If I went with mono blocks instead, I'd need a third high current outlet... So the Ragnarok 2, being an integrated balanced amp, can save money on the power conditioner side as well, though I'm generally a fan of specialized components. Something to consider.