Recommend Class a Amp

looks like Czarivey is correct in saying that the Krell KSA-250 is not full class-A. you can read a little more about that in the following link:
http://www.stereophile.com/content/krell-ksa-250-power-amplifier-when-class-class

a cut & paste from that side-bar article in Stereophile:
"Looking inside the KSA-250, the emitters of the 12 pairs per channel of output-stage transistors appear to standing on series resistors of nominal 1 ohm value. The average voltage drop across these resistors was 110.5mV, implying a standing bias for each of 110.5mA; ie, a total of 1.33A. This will give a maximum power for true class-A operation into 8 ohms of 28.5W (14.5dBW) rather than 250W."

I agree that 200 watts of class A for 3k would be tough, except for considerably older equipment -- which might not be a bad way to go.

On the Pass 30s, I have the corresponding integrated the INT-30A, and while I love it, I diverge a bit from the commonly stated opinion that these amps are up to driving thirsty speakers: I've not found mine to be a great match for them, compared to more robust A/AB designs.

For a very nice A/AB option in your price range, you might also consider Odyssey.

John

Be also noted that old KSA series will most-likely need complete overhaul before you can actually use'm. They run extreamly hot and may develop dried out DC caps.

Good call by Czarivey and Bombaywalla. I dug out the original Stereophile issue to see if there was a manufacturer's comment in response to what JA had to say, and there was not.

To the OP: If I were you I would forget about pure class A operation and jump on this refurbished Threshold S/500 Series II, being offered by a dealer at $2495. I note, though, that in addition to being listed at the dealer's site he is offering it with a "buy it now" option at a well known auction site, so it could be spoken for at any time.

I have no affiliation with or knowledge of the seller.

Regards,
-- Al

This could be interesting...

http://app.audiogon.com/listings/solid-state-pbn-sierra-audio-whitney-power-amp-2015-03-13-amplifiers-32713-debary-fl--2

Looks like it can be run Class A/B or A, and it comes in at half your price target. 120 Wpc but doubles to 240 Wpc into 4 Ohms I'm guessing in A/B and 100 Wpc in Class A that may well double into 4 Ohms. Here's the kicker, you can buy two and still be within your budget and probably be at 200 Wpc pure Class A. I've heard Peter's amps and they are quite special. Very well made and designed and consistently get stellar reviews. I'd be sorely tempted if I were you given your budget and requirements. No ties to seller BTW.