High Current SS amps with input impedance = 200K

11-07-09: Bob_reynolds
...there are numerous examples in the Stereophile archives where the output impedance of a tubed preamp gets very high in the bass region. Without JA's measurements the consumer is truly in the dark about which amps will mate well with such preamps.

Amen to that, Bob. It's a point I've attempted to drill home to whoever will take the suggestion.

As much as we sweat the details of cables and electrical outlets, to not consider proper impedance matching between components just doesn't seem rational to me. I'm glad to see that Mapman is attempting to get a good fit.
Bob_reynolds (Threads | Answers)

Can I get another Amen!

How about a few Hallelujahs?

Very nice to see a good discussion showing a sensible approach...of course, many audiophiles will continue to blame their interconnects and keep spending when their problem is simply a matter of a poor impedance match and choice of components...around here cables and interconnects often get blamed for what are really equipment design/selection issues.

...of course, many audiophiles will continue to blame their interconnects and keep spending when their problem is simply a matter of a poor impedance match and choice of components
Shadorne (System | Reviews | Threads | Answers)

Tell it! Tell it!

Hallelujah!

Amen from me too, of course.

I found the review very quickly because I was too dumb to think of looking in the component category listings. It is in the Power Amp category, because it was reviewed in conjunction with an ARC VS110 power amp. I just entered "Audio Research SP16" into their search function.

Best regards,
-- Al

Thanks everyone for sharing your expertise and attention on this. Much appreciated. Impedance matching is one of those things that I know makes senes to look at for optimal "synergy" between components, but I learned a lot regarding the details of what might go right or wrong here.

Just because the IC connectors are physically standardized to connect things doesn't mean any two things all do it together equally well electronically for sure!