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Audio Research SP15 sonics - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-sp15-sonics#:~:text=The%20SP15%20was%20the%20successor%20to%20the%20SP11,and%20to%20my%20ear%20it%20sounded%20that%20way.
Audio Research SP15 sonics - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-sp15-sonics
09-14-2003 7:01pm The SP15 was the successor to the SP11 in its line of hybrid preamps. The 15 used far less tubes than the 11--it was more a solid-state hybrid than a tube hybrid, like the SP11, and to my ear it sounded that way.
The Audio Research SP-11 - soundmovements.co.uk
http://soundmovements.co.uk/diyaudio/SP11.html
Audio Research released three phono preamps over the four or five years after the SP-11: the SP-9, the SP-15, and the SP-14. The SP-15 replaced the SP-11 at the top of the range; it was basically the same preamplifier as the SP-11, but with MOSFETs in the line stage replacing the valves of the SP-11 (though the three-valve phono stage is almost
Audio Research SP11 MKII Preamplifiers user reviews : 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp11-mkii.html
With the SP-11, I believe that I have finally found a pre-amp that is worthy of my power amp. While the bass was leaner on the ARC compared to the c-j and the Mac, the bass control was tighter and the midbass cleaner with the SP-11. My guess is that the SP-11 is the most accurate of the 3 when it comes to tonal accuracy.
Audio Research SP-11 MK2 ... - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-sp-11-mk2
The SP-11 held up very well against his Ref 3. I use the SP-11 quite extensively now, but I do prefer my SP-10 mki for analog playback (60% of the time) and the SP-11 for digital playback (remaining 40%). But then I get my jollies moving power sources and front ends around every 3-4 months (not!).
Audio Research SP-11 preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-11-preamplifier/
Audio Research SP-11 preamplifier. Residing at the top of the heap for at least three decades, Audio Research Corporation preamplifiers are almost default purchases for certain types of tube lovers. ARC preamps are adventurous in their technology yet conservative in execution, so they appeal to audiophiles who like to minimize risks.
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