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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.
AUDIO RESEARCH SP9 MKII
https://www.audioantiquary.com/en-us/audio-research-sp9-mkii/
The SP9, here in the Mark 2 version, is Audio Research's best-selling preamp ever. Available on the second-hand market at a modest price when compared to the sonic performance, it is really a "best buy". This specimen is a rare version with black knobs instead of silver as usually proposed. Completely overhauled, the old ALPS potentiometer has been replaced with …
Audio Research SP9 MKII Preamplifiers user reviews : 4.6 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp9-mkii.html
The SP 9 mk II is a sensible choice, especially given the low prices on the 2nd (or 3rd) hand market. Similar Products Used: NAD 1020, Copland 301, Music Reference RM 5, ARC LS2B, ARC LS3B, QUAD 405-2, Futtermann OTL amplifier, ARC VT 100 mkII
Audio Research SP9 MKII - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-sp9-mkii
Audio Research SP9 MKII. Hello Found two ARC SP9's for sale. The first is the MKII with 6h23p-eb Russian 6922 tubes the second was a SP9 that was sent back to ARC and upgraded to the MKII, it has 2-6922 Sovtek Tubes installed .
Audio Research SP9 MKII Preamplifiers user reviews : 4.6 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp9-mkii.html?p=2
So when I had a chance to own an Audio Research preamp myself, I grabbed it. With my modest CD-based system of Audio Research SP9 MKII preamp, Quad 405 100 watts per channel amp and PSB Alpha 2, I am already pleased with the clear 3-dimensional sound. Audio Research SP9 can really ensure sterling performance from a modest system.
Audio Research SP-9 MKII // Solid-State Tube Hybrid | …
https://reverb.com/item/49275907-audio-research-sp-9-mkii-solid-state-tube-hybrid-preamplifier-orig-box
STOCK NO. 7533721059549 LINER NOTES. "The SP9 Mk.II produced a fundamentally good sound in my system, with clear, sparkling highs and a rich, if somewhat reticent, midrange and bass. There is a family resemblance between this product and the SP14, especially in the overall "musicality" of the sound.
Audio Research SP-9 Preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-9-preamplifier/
Audio Research obviously knew it was on to something, later offering Mk II and Mk III upgrades, costing $1,795 and $2,495 when discontinued in 1996. With each, there were wiring changes, power supply upgrades and better circuit boards to …
Audio Research SP-9 MKII Amplifier for sale online | eBay
https://www.ebay.com/p/110900181
item 4 Vintage Audio Research SP9 MkII 2 Tube Black Preamplifier Plus Phono w/Orig Box 4 - Vintage Audio Research SP9 MkII 2 Tube Black Preamplifier Plus Phono w/Orig Box $1,495.00 item 5 Vintage Audio Research SP9MKII Tube Preamplifier in Very Good condition 5 - Vintage Audio Research SP9MKII Tube Preamplifier in Very Good condition
Audio Research SP9 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/739/index.html
Audio Research SP9 preamplifier. 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.
ARCDB
https://www.arcdb.ws/model/SP9
SP9 MKII (1991) Technically, the Mark II version of the SP9 preamplifier includes a group of 14 different improvements, utilizing 61 component and wire changes. These combine to provide enhanced reliability and flexibility, in addition to the sonic improvements.
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