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Audio Research SP-9 Preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-9-preamplifier/
The Audio Research SP-9 redefined the term “bullet-proof.” While previous all-tube models often encountered noise, channel imbalance, hiss and distortion, this new hybrid design was dead quiet, linear, and most of all, musical. The SP-9 hit retailer’s shelves in 1987 with an MSRP of $1,695 and offered tremendous value.
Minimax or Audio Research SP 9 mk III - High-End Audio ...
https://forum.audiogon.com/discussions/minimax-or-audio-research-sp-9-mk-iii
Minimax or Audio Research SP 9 mk III ? Budget is $600 for tube preamp. Looking to add some body and dynamics to the music. Recently downsized from MWI 9.0 SE Signature and MWI 9100es. System is Sony PSP 1, Red Wine 30.2 integrated and Vandersteen 2ce Signatures with Clear Day Silver Biwire speaker cables. thanks Ken georgia2k 11-30-2008 5:13pm
Audio Research SP-9 mkIII | Tube | Audiogon
https://www.audiogon.com/listings/lisaefjj-audio-research-sp-9-mkiii-tube
Audio Research SP9 MkIII Stereo Tube Preamplifier with MM Phono. 8/10 Excellent condition with minimal visible cosmetic wear including some light nicks around the edges of the top surface. These blemishes are not readily visible and do not detract from the overall appearance. Phono stage has 47k resistors perfect for an MM cartridge.
Audio Research Corp., SP9 MK III High-Definition Hybrid ...
https://reverb.com/item/35868159-audio-research-corp-sp9-mk-iii-high-definition-hybrid-preamplifier-1996
Vintage Audio Research SP9 Mk III, High-definition, audiophile-quality, hybrid (Two 6922/6DJ8 dual triodes & FET's) Preamplifier. This Audio Research SP9 MKIII is an all original (blackface) factory MKIII. (Not an upgraded MKI or MKII). The condition of this unit is aesthetically, mechanically, and sonically way above average.
Audio Research SP9 Review - VintageSonics
https://vintagesonics.com/reviews/amplifiers/audio-research-sp9-review/
The Audio Research SP9 was a complicated, no-expense-spared design that had been ‘shrunk in the wash’ to make it more inexpensive. When it was first released, it was still quite pricey, but you didn’t have to be Richard Gere to afford one. Here was a taste of one of the finest aspects of hi-fi living, brought within audiophiles’ reach.
Audio Research SP-9 mkIII | Tube | Audiogon
https://www.audiogon.com/listings/lisadf0a-audio-research-sp-9-mkiii-tube
Audio Research SP-9 mkIII [Expired] no longer for sale Average Research Pricing Factory built, babied, 1 owner, very light use, smoke free environment. I’m unaware of any physical or performance flaws. This is the factory-built 3rd generation version of the venerable SP9. ARC no longer upgrades earlier models to Mk III specs.
Audio Research SP9 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/739/index.html
Following the introduction of their very expensive, tube/FET hybrid SP11 preamplifier, there were rumors that Audio Research was working on a hybrid tube/transistor preamplifier targeted to cost less than $2000. The rumors were confirmed when ARC showed a black-and-white photo of the SP9 at the 1987 Winter CES. Obviously, like all magazines, we …
Audio Research SP9 MKII Preamplifiers user reviews : 4.6 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp9-mkii.html
Having used the SP9 mkII for 9 years I for one am enthusiastic about it. The amplifier is sweet sounding, smooth and holds its own in the lower octaves. It is sensitive to differences in tubes - tuberolling can yield intersting results. The preamplifier has kept up with the continuing improvemenst in the rest of the system.
Audio Research SP9 preamplifier Guy Lemcoe SP9 Mk.II …
https://www.stereophile.com/content/audio-research-sp9-preamplifier-guy-lemcoe-sp9-mkii-1290
The hybrid SP9 Mk.II uses two 6DJ8 tubes, one in the phono stage and one in the line section, each ringed with tube dampers, like the solitary 6DJ8 in the ARC SP14. The SP9 Mk.II is a revision of the original SP9 introduced in the Summer of 1987, embodying what Audio Research calls a group of 14 different improvements. J.
ARCDB
https://arcdb.ws/SP9/SP9.html
SP9 MKII/III: 250 ohms main output. 850 ohms recorder output. Recommended load 60K ohms and 100pF. (20K ohms minimum and 1000pF maximum) Output polarity - Maximum inputs Phono, 200mV at 1kHz (1000 mV RMS, 10kHz). High …
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