Entry level tube amps?

Different tube amps sound different, so I'd hesitate to have you make a decision about how a tube amp sounds based on one particular budget amp. That said, I'll give you some of my thoughts.

1) For a low-budget amp, I love my Jolida 302b integrated. It has a warm, relaxed sound that glosses over only the smallest details.

2) If you're looking for just an amp (as opposed to an integrated), a Cary V12 would be a solid choice to drive your Electra's.

3) If you want something even more on the warm side, try one of the rebuilt Dynaco ST-70's.

4) For just a hint of warmth, I used to own a pair of Audio Valve ppp45 monoblocks that I miss. They're rare on the used market, but available in your price range when they do come up.

I hope that gets you started.

Michael

Check out the Minimax on this site..$650 OBO

I don't know what your power requirements are, but within your budget, these should give you a taste of what you're looking for.

http://www.audiogon.com/cgi-bin/cls.pl?ampstube&1248963171&/Cary-Audio-Aes-Six-Pack-silver

Usual disclaimers, no affiliation to the seller. Yada, yada, yada....

This may sound a bit strange but I advise waiting a few months, actually until October or so. Why? Because of the heat issue.
About three weeks ago I traded an amp for a Jolida JD-202A with a local Audiogon member. Thought I'd give tubes a try.
Hooked it up, turned it on and let it warm up. Sound was very nice. Not up to par with my ss system but the cost difference isn't small.
After an hour of listening I left the room for 30 minutes. When I returned I was hit by the heat in the room. Bottom line, I sold the amp today.
If I had tried this in the fall or winter I probably would have kept the amp around for a more rigorous evaluation.
If you do go with the tubes be prepared to crank up the AC.