Electar Century 60RD: sounds and settings
I am starting to really like this amplifier (May 2003). The Celestion G12 Century speaker I put in replacing the original was definitely a Good Move. Bear in mind that all comments and sound samples refer to this amp equipped with said Celestion speaker.

The setting above represents a basic tone that I find quite pleasing. The master volume must be at 3 at least, that's when the amp starts to make me smile. Any lower than that and it sounds a bit too harsh.
The gain on the lead channel is set at around 6-7, which gives a nice enough overdrive without being over the top. Reduce it slightly to get nice bluesy sounds, or kick the boost switch in if you're in a metal mood...
Sound samples coming soon...
This other setting uses lower gain and works very nicely with my telecaster. When switching to the lead channel, you can play almost clean by controlling your picking dynamics and/or backing off the volume on the guitar. The bridge humbucker, being hotter, is a bit harder to play cleanly of course. Switching the boost on gives you serious enough gain. So with those three positions plus the guitar volume, you have a wide range of very nice sounds right there at your fingertips. 
July2003

Meanwhile here are some rough'n'ready mp3 clips I just made with a Yamaha AEX502 (P90 pickups) into the Electar, recorded with a Shure SM57 microphone. The recording is plain, without any processing, but I cannot quite reproduce the sound I actually hear. I have to spend some time investigating placement of the microphone etc and this was just the first test, putting the mic about 3cm from the speaker grill, a bit off-center. There may be a little recording-distortion (it was *that* rough'n'ready!). Most are recorded using the neck pickup. Mic placement shown here.

Clean 1 (563kb).

Clean 2 (711kb).

Clean to overdrive (1301kb). Starts clean with a touch of saturation when hitting the strings... I should have set the levels right... last the overdrive kicks in (actually a crap copy/paste, with different sound levels and you can hear the increased hiss when I pasted it... cheap mic preamp...)

Overdrive to boost (755kb). Some overdrive, and kicking the boost to get some more serious overdrive.

Overdrive 1 (968kb). A touch of saturation sometimes too...

Overdrive 2 (825kb). Serious overdrive, with the microphone in another position (not on purpose, it was resting on a box and I moved it inadvertently... it sounds a lot bassier and boxier...)