Audio Research Sp-9 Mk Ii Tube Preamp

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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 SP-9 MKII // Solid-State Tube Hybrid | …

https://reverb.com/item/49275907-audio-research-sp-9-mkii-solid-state-tube-hybrid-preamplifier-orig-box

Meet one of the sexiest preamps to come our way. The ARC SP-9 has long been one of the most desirable, and for good reason. Turntable ready, this preamp delivers surgically clean signal through ARC's hybrid FET/Tube audio circuit and solid-state power supply. And you'd never know it's over 30. W...

Audio Research SP-9 Preamplifier – Old School | TONEAudio ...

https://www.tonepublications.com/old-school/audio-research-sp-9-preamplifier/

Clearly, the Electronic Industries preamp I had on the bench was quite a bit different from the Audio Research SP-9, which was created later in 1987. This preamplifier was a standard tube design. The latter, as Johnson explains it, is the culmination of numerous experiments with transistors and eventually FETs to come up with a hybrid design ...

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.

Audio Research SP9 MKII Preamplifiers user reviews : 4.6 ...

http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp9-mkii.html

The preamplifier has kept up with the continuing improvemenst in the rest of the system. The SP 9 mk II is a sensible choice, especially given the low prices on the 2nd (or 3rd) hand market. NAD 1020, Copland 301, Music Reference RM 5, ARC LS2B, ARC LS3B, QUAD 405-2, Futtermann OTL amplifier, ARC VT 100 mkII.

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