You might want to be mindful of the Adcom’s low input sensitivity and input impedance numbers. The impedance might be a bit low for some tube pres output impedances and the high sensitivity could make the volume control on some tube pres (like some c-j’s) have rather restrictive range.
Recommended Preamp for pairing an Adcom 555II Amp and Theil CS 3.5 speakers
My Bryston 0.5B preamp was inadvertently put down over the holidays by an incident now known as 'The Sippy Cup Mystery'. Regardless of the cause, I need a new preamp for my system. I am driving a pair of Thiel
CS
3.5 (with the electronic bass equalizer) speakers with an Adcom GFA-555II amp. The majority of the eclectic music (classical, 80s, folk, funk) being played on the system is streamed from iTunes through my Audioengine B1 DAC. I have read a number of posts with various recommendations for the GFA-555II or the Thiel CS 3.5s but not for their paring. Short of winning the lottery this week, cost is a factor. Any suggestions or directions would be very much appreciated.
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- 26 posts total
You might want to be mindful of the Adcom’s low input sensitivity and input impedance numbers. The Adcom GFA-555 II Spec sheet states an input impedance of 100Kohms, which should be fine with almost any preamp. http://www.kenrockwell.com/audio/adcom/gfa-555-ii.htm#spex The CJ PV-10A output impedance is measured by Stereophile at 690 ohms. https://www.stereophile.com/content/conrad-johnson-pv10-preamplifier-measurements No problem at all. Good reco Jerry (pops)! Cheers, John |
- 26 posts total