I picked up an Anthem A2 used for a great deal about 4-5 months ago.

There's nothing wrong with the A2, but I feel like in order to really capitalize on the deal that I got, I almost need to flip it for something else.

The A2 is 200 watts/channel into 8 Ohms and 300 watts/channel into 4 Ohms, whereas the Krell is 250 into 8 Ohms, and 500 into 4 Ohms (not sure whether it actually doubles down into 4 Ohms in the real world or not).

The used KAV 250a would cost about $200 CDN more than what I can get for the A2. Is it an upgrade that's worthwhile? The used KAV-250a I'm looking at has recently been completely re-capped with Mundorf Supreme capacitors.

The speakers are

Selah Audio Vigore which I should be receiving in the next week or so.

I don't have final specs yet, but it's a fairly large 3-way bookshelf, around 86.5dB efficient, -3dB at 35Hz, 4 Ohm nominal, rear ported speaker.

The rest of the system:

Esoteric SA-50 SACD/CD/DAC

miniDSP DDRC-22D (mostly to tame and tailor bass and midbass) <All digital sources run through it, then to Esoteric as DAC (unless playing SACDs)

Oppo BDP-83

Chromecast Audio (soon to be replaced with Bryston or Auralic streamer)

Wyred4Sound STP-SE Preamp

Anthem Statement A2 Power Amp

Pair of Velodyne SPL-800R subwoofers (stereo subs, will be low-passed at 40Hz to augment lowest octave)