2. amps-preamps
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Audio Research LS15 vs. SP14

I’m not sure about the production date for these preamps but they seem to be within the same price range in the used market, basically within a $1200-$1500. All things being equal, which one do you folks prefer in terms of sound quality. I’ll be using it just as a basic preamp with an SS amp, ML Aerius speakers and a CD player so I don’t need a lot of features, just sound quality. Thanks.

Edited to add Audible Illusions Modulus3 as another option although it's priced somewhat lower than the ARC components referenced.

kalali
jperry
2,495 posts
 
The Audio Research has most of the information you need. The SP probably has a phono stage the LS does not have a phono stage
jl35
4,255 posts
 
there were also two versions of the LS15, most easy to distinguish by the removable power cord on the later version.  there was also a cap and power supply upgrade
jl35
4,255 posts
 
The Phono Stage is a major plus for the SP14
rodman99999
6,206 posts
 
Yes, a nice tubed phono stage in the SP-14 . Also, given the aluminum chassis, it’s very easy to install an IEC socket(ie: C-14), to facilitate the use of an upgraded power cord. 
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