Originally Posted by keyboardcat
if the old amps parts still work perfectly and the sound is the same, then people are wasting money on a new rotel amp?
First off, your fundamental assumption being that "the old amps parts still work perfectly and the sound is the same" is a hypothesis that needs to be tested, one old amp at a time.
As Knucklehead says:
"Very often all an old piece of gear needs to play like the day they were built is a shot of Deoxit on the volume & tone pots and the switches. Recapping is often a necessity with 40+ year old stuff but its worth it - unlike most newer gear"
The above statement covers a very large span - like the difference between soup and nuts. The possible courses of action range from doing almost nothing to a total rebuild.
I agree that some old gear needs nothing but a little cleaning and some needs a very thorough refurbishment. You can tell which is which by simply looking at it. Hooking it up and listening gets you further down the road but the best way to form a strategy for putting old gear back into service is thorough bench testing which takes resources that the average audiophile lacks. The average audiophile lacks the resources to do a thorough recapping and replacement of other parts that degrade in use or storage.
When equipment is refurbished most of it remains old. Old parts are ticking time bombs. One argument says that they can be more reliable because they have lasted so long and still work while another argument says that their technological clock has been ticking for years and will go off tomorrow. It just isn't tomorrow yet! Both rules can apply to different parts in the same component.
Is part of the reason that some of the vintage Rotel amps under a 100 dollars because of how they look? People might think that they look ugly and don't match decor?
Used equipment values are interesting. Look at the prices paid for used MacIntosh, and early Marantz as compared to Fisher and H.H. Scott as compared to Dynakit and Sherwood. The differences now are often far greater when everything was new.
Why are Rotel prices what they are? Well first off they are pretty good because much equipment from that era is pretty much worthless. Rotel entered the market relatively late compared to the manufacturers I just mentioned so the age factor isn't there.
In the modern equipment market we have equipment like analog 2-channel receivers, integrated amps and power amps that could have been built as they are today but 30 years ago. OTOH, we have the modern mainstream AVRs that could not have been built as they are today even just 3 years ago because of the advanced technology that is within them.