2. amps-preamps
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Please help a rookie –used amps for magnepan 3.7?

This is my first post on any kind of audio forum, so I apologize in advance for my ignorance if I’m violating any convention/etiquette etc. I love music, but confessed to being overwhelmed regarding all the technical development since the days of tubes.

I am planning to buy some Magnepan 3.7 speakers. I don’t think I can afford to buy the ideal amplifier for my system right now, and would very much appreciate any advice or suggestions about what sort of used amplifier set up would be the best compromise between cost and sound quality for the near term.

I use both digital and analog sources and have Audio Research LS17SE tube pre amp and Bryston DAC and 8 year-old Rotel RB 980 BX amplifiler, which I believe is rated at 125 W. This set up has worked well with my current Vandersteen II ce speakers.

My local audio dealer told me that for the maggies I should get an amp with at least 200 W of power and suggested an Audio Research DS 225, which I could buy used for $3,900. This is a bit more than I would like to spend, however if the consensus of the group is this is the best option I could start saving towards this.

Alternatively, I was wondering if there might be a slightly less expensive amplifier suggestion somewhere closer to $2,500? (I might be able slip that one as my wife with minimal angst).

I’ve always been interested in the idea of separate mono block amplifiers. From my admittedly uninformed perspective, the logic of separate amps, potentially located closer to the speakers seem reasonable, however I have no idea if that’s accurate or even an option I should consider. Maybe I should consider getting another Rotel RB 980 like the one I have now, which I think should be fairly inexpensively – does that make sense?

I very much appreciate any and all advice and suggestions from the knowledgeable members of this community.

Thanks, Mike
mallen1010

Showing 2 responses by mallen1010

mallen1010 OP
3 posts
 
Thanks to everyone for all your very helpful advice and suggestions – much appreciated!

Based on the feedback, I think I'm hearing that a solid-state, class A/B amp with 200 W of power would probably work well.

Is there a way to know which of the ARC amplifiers are solid-state? I'm admitted to being very confused about what their naming convention means.

Another naïve question about mono blocks; if I assume I need 200 watts per channel of solid-state power in a single stereo amplifier, is that the same thing as two, 100 Watt mono block amp's?

Thanks in advance for your consideration and help!
Mike
mallen1010 OP
3 posts
 
Thanks very much, your responses are very helpful – you just increased my knowledge on this subject by 100%. I really am starting from zero.

Brauser, I like your suggestion that since I already have an ARC LS117SC preamplifier, an ARC amplifier would be a good companion.

I am really confused about all the amps ARC has made over the years. For cost reasons, I would prefer to get something used. I was advised that my preamp has "balanced" inputs and therefore I should get an amplifier that has "balanced" inputs as well. I'm not really sure what these are, and don't know if that advice is sound.

My local audio dealer suggested a ARC DS 225. I was advised that this is a class D amp, and that another type of amplifier would be a better fit for my system. Again, I don't know the difference between class D and other types of amplifiers.

Do you have any thoughts/suggestions about what models of ARC amps that meet the criteria above I should look for? Any hints about what a reasonable price to pay would also be much appreciated.

Thanks again for the help. I love music, but of all the things I really care about audio components are the thing I know the least about.

Many thanks, Mike
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