Would you change your amp selection knowing...?

^While I agree with your point, there’s no need to even consider replacing one’s amplification. As I’ve said before: there’s no sound reason not to use the provided RC networks (zobels). 

What would be considered high capacitance in, say a 10' speaker cable?

Zip Cord is ~15pF/ft, Belden 1311A ~22pF/ft so 150 to 220pF for 10' is 'normal'. Some Goertz is 100 times as much and that is high.

A few Cardas cables can be pretty high...

http://www.cardas.com/clear_sp.php
This one is  278 pf / foot x 10 = 2780 pF for a 10 ft cable- that's pretty high

This is probably their highest capacitance cable

By comparison - The Van den Hul D352 is  32.5 pF / meter. so that's about 100 pF for a 10 ft cable

Don't let that put you off Cardas - some of their cables are much lower

At least Cardas makes the capacitance of their cables knowm
- which makes me think they are aware of the issue
- and feel the audiophile should know about it

Many companies do not 

Regards - Steve

Speaker Cable:
Speaker cable is a bit different from a lot of the interconnect cables we handle, in several respects. Because speakers are driven at low impedance (typically 4 or 8 ohms) and high current, speaker cables are, for all practical purposes, immune from interference from EMI or RFI, so shielding isn't required. The low impedance of the circuit, meanwhile, makes capacitance, which can be an issue in high-impedance line or microphone-level connections practically irrelevant. The biggest issue in speaker cables, from the point of view of sound quality, is simply conductivity; the lower the resistance of the cable, the lower the contribution of the speaker cable's resistance to the damping factor, and the flatter the frequency response will be. While one can spend thousands of dollars on exotic speaker cable, in the end analysis, it's the sheer conductivity of the cable, and (barring a really odd design, which may introduce various undesirable effects) little else that matters. The answer to keeping conductivity high is simple: the larger the wire, the lower the resistance, and the higher the conductivity.

Hello Steve - I copied the above from the Blue Jeans site.  I wonder if their, "...barring a really odd design, which may introduce various undesirable effects...." is tacit acknowledgement of the oscillation risk you raise (among other things, I suppose).  In reply to your original question, knowing an amp was susceptible to high capacitance induced oscillation would not put me off from buying that amp (assuming it was desirable to begin with) BUT I would certainly exercise care with the speaker cables attached to it.

Thanks for the Cardas info.  By contrast to the high capacitance number for their Clear spkr. cable I note their Parsec cable is 30 pf/ft.  

If bi-wiring, how would these capacitance numbers work...simply additive? or something else??

Anyone have an idea about capacitance of the Clear Day Double Shotgun speaker cable?

Thanks again.