# Audio Research SP9MKII

- Marchio: Audio Research
- Disponibilità: non disponibile
- Categoria: Archivio, Preamplificatori
- Pagina: https://audiocostruzioni.com/prodotto/audio-research-sp9mkii/

## Descrizione

Dal sito:

 

http://www.arcdb.ws/SP9/SP9.html

 
SP-9 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.
- In the CD unit the gain has been reduced by 12 dB, allowing operation of the gain control in its mid rotation or high positions, while still leaving all other inputs with normal gain for lower input program sources.
- Low-level hum in the line section is reduced 10-20 dB, which is noticeable primarily in systems with high-efficiency speakers, small “live” rooms, high-gain power amps, or low-noise CD program sources.
- The power supply and phono sections are “beefed up” to prevent accidental damage if a CD source is mistakenly connected to the MC phono inputs and is p…

## Specifiche

- Anno produzione: 1991
- Paese di origine: USA
- Tipologia amplificazione: valvolare
- Stadio phono: MC
- Ingressi analogici: CD, phono MC, linea
- Valvole utilizzate: 6922

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Venduto da Audiocostruzioni (Carpi, Modena — Italia). Prezzi in euro, IVA inclusa.
Usato, vintage ed ex-demo sono pezzi unici: disponibilità e prezzo cambiano, la scheda in pagina resta la fonte buona.