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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
lak's avatar
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lak
4,628 posts
 
Mallen1010,
Welcome to the group.
Maggies do require a lot of power to really sound their best.
I also own a pair of the 3.7's, they are very nice.
I would recommend you pick up a used BRYSTON 4B amp. There are a variety of 4B amps out there that start at 200 WPC and some more then 200 WPC. If you purchase a used one, it would be in your price range and will sound very good.
4B = 200 WPC
4B NRB = 250 WPC
4B SST = 300 WPC
Feel free to PM me if I can try to answer any other questions.
Best Regard,
brauser
525 posts
 
Magnepan and Audio Research have been 'soul mates' for years. Since you already have ARC equipment, just find a less expensive used ARC amp. There are lots to choose from which meet your criteria and are in your budget. Also, remember that the actual performance difference between a 100w amp and a 200w amp is just 3db in volume.
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
simao's avatar
simao
1,819 posts
 
Mallen,

I used an ARC VS-115 with my 3.6R's that matched beautifully. I also swapped in and out periodically with a pair of Rogue Magnum 180 monoblocks that also sounded wonderful. My pre was a Blue Circle.

You couldn't go wrong with the Bryston, but I don't know whether you need that much power at all times. The Maggies project exceptionally well even with 115W.
audiolabyrinth's avatar
audiolabyrinth
4,555 posts
 
Brauser,how does the 3 db for 100 watt's compaire to say ah, 700 wpc?, what is the increase number in db here?, then kick that to 6ohm's, mmm, which would in this case be 900 wpc, now what is the db difference between 100 wpc and 900 wpc?
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