ECC81 -- can you swap in an ECC82 without causing a meltdown?

[Rodney_gold]

Bought this amp from sweetsound to drive super efficient speakers
http://www.avforums.co.za/index.php/topic,22747.0.html
I have quite a few good pairs of ECC82 valves but the amp uses ECC81's..can I safely swap out the 81's with 82's without causing the amp to blow up or damaging it?

 

[Andre Vermeulen]

 

[Rodney_gold]

 

[Family_Dog]

 

[Waterhond]

 

[MusicBob]

 

[darrylo]

 

[Steerpike]

 

[Andre Vermeulen]

 

[Ampdog]

 

[Ampdog]