What can you say, they are great, affordable, hand wired amps.   If you bought a complete amp, make sure you check the bias after it gets to you.
Good Luck

I wouldn't worry too much about the biasing, I'm sure it's biased before shipped, chances of it drifting enough to affect anything seems slim...but...it's something worth knowing.

The amp is set up with bias check points.  You'll see four red jacks and one black on on the back of the chassis.  With a DMM set to measure voltage (mV), you plug the red probe of the DMM into any of the red jacks and the black probe is grounded through the black jack.  This bias points have a 1 ohm resistor to ground installed.  Thanks to Ohm's Law, you can then read 1mV for each 1mA of cathode current.  So, if you need to bias a tube to 40mA, dial in the bias pot until your DMM reads 40mV.

From there a simple table like this can help you...
http://www.webervst.com/tubes1/calcbias.htm

Note, you need to know the plate voltage.  Normally, we get this on a EL34 amp by measuring voltage from Pin 3 (red probe on pin 3, black probe to ground, like the chassis).  This exposes you to high voltage...400-500VDC in enough Amperes to kill you.  So, if you aren't wanting to go through all the reading and preparation and safety precautions to become an amp tech...just as Nik what they are averaging in his shop...or ask around here.  Changes in wall voltages will affect plate voltages, but that's unavoidable (you can't count on amp techs or clubs to have the same wall voltages as your house anyway).

As for dissipation...I start around 60%, the recommended 70% is often quite hot, and modern tubes are the most robust. 

You'll note you have 4 tubes , 4 bias points and only 1 bias pot.  Well, you have to average everything out so all the tubes are as close to you intended point as possible.  This is were matched sets come in, if a set is truly matched they should all bias up to within a couple of mAs of each other.

2555, eh?  That's a hell of a lot of output, good luck with that Prince Albert Hall gig. 

Thanks a lot guys. I'll plug it in and if it sounds flabby, I'll just take it to a tech. Hopefully this tech will give me some hands on. It doesn't sound like its safe enough for a new guy just to "just go in there". I decided the 100W would be better in the long run. I like to buy things I will keep for a lifetime. I think I read every forum on the internet that mentioned Nik's amps and the only bad things I heard were other amp makers complaining about the price. From what I heard this guy is one of the best. I hope he never changes. Someday i dream of a wall of amps and with his prices and quality I just might get there.

No punctuation necessary, Wyatt is my real first name. 

This thing sounds awesome. I just can't get enough of the sound this thing has. Lots of chunk, not a super high gain, and if you want cleans try something else. The cleans are alright but not good or even great but thats cool because I wasn't wanting that anyway. I wanted good Marshall crunch and this this delivers. Period! Nik hooked it up too. I can't believe he sent this amp to me stock with JJ tubes. Thanks a lot Nik. Well I will soon be posting a sound clip and a Harmony Central review. Thanks a lot every one. Look for me soon posting about other Ceriatone amps.

No.....I like the crunch I'm getting. I am totally satisfied. No changing.