Classic is a 30 W with a 15-inch Blue Marvel HP (quite rare to find a 15 inch on a guitar amp).
Vintage Tremolo effect without the switch to "on" or "off": you have to turn the intensity to reset it.
Settings classical effects loop, speaker output external footswitch to change channels clear saturated.
No line out.

UTILIZATION

The manual is not worth it, you'll branches and you play. You just turn the equalizer to see the changes, the tremolo to see that it works (and it works well except that Peavey could still make a switch to cut it!)
This is a vintage style amp so the sound is there now, then this is the way to play that will create the sound, do not expect the possibility of change fulgurentes sounds: there is a clear The saturated and equalize it a little above it all.

SOUNDS

I play in the pop / rock / blues influences with SRV, Stones, Hendrix (the right time what) with a strato plugged into a Tube Screamer and a Boss ME 50 multi effects but mostly it's guitar + TS (crunch) directly into the amp and the amp there is need for fans of blues / rock that exudes a well moist.
Its clear it's true that it is not crystalline, it crunches slightly from 3 or 4 of volume but I tried a Fender Blues Deluxe (the same kind of amp) and it was even worse clear. In fact it is the same as the Classic 30 with more fullness and accuracy because of the HP 15. Be said that the original HP Classic 30 is not a success (it's not the Celestion).
I also have a semi-hollow Yamaha (SA1200) connected above one can very well do a good jazz thanks to the roundness of HP. I also did a test by putting a équalizeur in the effects loop and through the distortion of the Boss ME50, and there digging equalizer (Beringher FBQ1502) we arrive at a sound very interesting for many of the hard tough : good sense of power just as if played on a 4x12 cabinet.
As against the little less on this amp is like the Classic 30: The channel is saturated medium (flat, a little runny), it can help but honestly it's much better to connect a pedal to the clean channel, it does much better.
The tremolo, it can still be used on some pieces but the knob on the speed can not be used under 8 or so I did not understand the value of a tremolo speed slow - in short c ' is not really necessary especially as it takes effect plug a footswitch (not supplied) to cut it.
In short, it's an amp that can suit all types of music from jazz / blues / rock, even going so hard on the pedals you plug that go. I even plugged my Dobro on it and it came a super well rounded and very clear.

OVERALL OPINION

I bought this amp yesterday to 750 euros by sharing my Classic 30 of the same brand in my music store. It was on that I'm not into the unknown with this amp but I was fine to try other amps, I find the Peavey Classic has its own sound and this sound that I like (especially plug a good Start it and you tell me the news).
What I like most is "potato" of the amp when you put the volume at 6 and we feel the vibrations through the guitar and go into the guts, it's almost an orgasm . It's like a 100W head Marshall 4x12 with the body but here you only have to carry 24 kg ...
I tried the same week a Mesa Boogie Express 25: it is on is good, it's all over, it exudes quality manufacturing for 1400 euros but you just have a HP of 10. I tried a Hughes and Ketner 84 DUAL: it sounded good but maybe a little cold or a lack of personality (a bit subjective).
So I had to hesitate a bit tired so I took the Delta Blues (which otherwise could have been called since it is in fact not only for the blues)
and the problem is that in magazines and on the sites we see full of brand and variety of amps in the stores but to try, there is always the same. So I prefer to try before throwing 700 or 800 euros to the merchant.
For 750 euros is a fair price value compared to other brands (Fender Hot Rod Deluxe or Blues for example) and the build quality looks neat. The problem is that I noticed a vibration in the lamps (from the forum, it's a little Peavey Classic disease) but there must be a solution to dampen the vibrations.
This is an amp that I recommend because it has a well-balanced sound that can descend into the grave and it can make good service whether by example or arpeggio solo. He is not slamming / shiny Fender but a grain very well be Texas Blues. I plug in an external HP permanently Marshall cabinet with a Celestion Heritage and it gives her a truly enveloping and powerful.
Yesterday I made that choice, I do not know if I do it again in 3 or 4 years, by then there will be plenty of new models to test ...