2. amps-preamps
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Audio Research SP-8 or Quicksilver Full Function ?

Hi there I have been looking into tube preamps for a while now and I have it narrowed down to two. The ARC SP-8 or the Quicksilver Full Function. I want it to look good and sound very detailed and natural with a great sound stage. I want to spend under $1000 and must have a great phono section and lots of Line stage inputs.

I was wondering if anyone had actually heard this two and Know the defferances I'm leaning toward the SP-8 and doing some upgrades to the Caps.

My System is
Magnapan 2.6R
Home made sub kit from Parts express with 10" titanic sub and 250 watt sub amp, this is an awesome sub kit.
B&K ST-140
Music Hall MMF-7 with Grado wood Platnum
B&O Cassette
Teac Reel two Reel
Sony ES CD player
Sony CD Changer
Senergenic Research .5 M between Turntable and CD Player to Preamp
Tera Labs 1M between Pre and Amp
Speaker wire old Huge Fulton Gold or Kimber Kable 4pr
I have two preamps now A
B&K pro 10 mc and a Dynaco Pat 5

The Pat 5 actually sounds much better then the Pro10 With much better inner detail in the soundstage and more musical sound
I have been told by many that the Preamp is by far my week link. and I should go with a Tube preamp with the True Ribbons in my Magnapans
I mainly listen to Vinyl I have over 2000 lps
I know I also need a better CD player or maybe SACD player soon also

PS Don't give me more idias for preamp that don't have a Phono sections and don't have many line inputs like everyone seems to always do.
I have rulled out the MFA magus, Audiable illusion 2b,c,d,3ect. Counterpoint, Sonic Frontiers ect.
Thanks Mark In Puyallup WA
markblom
exocet954
98 posts
 
Hifigeek,

How would you compare the SP8/SP6B to your Audible Illusions? Could help but ask....
exocet954
98 posts
 
Sorry question was for CT0517, regarding the difference between SP-8 and the Audible Illusions.

Regards
ct0517's avatar
ct0517
2,041 posts
 
Hi Exocet954

The AI preamp is a very nice preamp for $1k. I find it is neutral sounding - closer to the sp11 in sound than the sp8, and it has a low level filter which is nice.

When I bought the sp11 a few years ago I brought over my sp8 and compared it to the sp11 the fellow was selling and a CAT SL1 that he also had. He was selling the SP11 because it did not have enought gain for purpose.

We listened to all three preamps.

The CAT and SP11 were close in sound from what I could remember. The sp8 was thicker, lusher, tubier - less detail. A nice sound if you like it - many people do and it has a cult following.

I kept the sp8 as a spare and sold it a couple of years later for another project.
hifigeek1
770 posts
 
If my memory serves me the SP-11 is a hybrid preamp where as the SP-8 is very much an all tube preamp except for some transistor constant current sources and filament voltage regulator. The series the SP-8 comes from include the SP-6 and the SP-10. The SP-6 came out years before the SP-8. The SP-8 I believe and was more of a replacement for the SP-6.
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