Now I can see, definitely a 3.3K (that second band will burn from white to grey but its still orange so it was never white before as orange burns to brown). I have probably changed too many burned resistors in my time....Bleh!
Knowing these old NAD amps quite well (but not really this particular one) I can guestimate as per picture above that top left is the phono section, top right the preamp, bottom right the preamp power supply, then bottom left the section of interest. From the pic, what can think is the "square" group of components that ran hot and burned looks something like two class A buffer amps between the pre and power section. Probably localised damage that didn't go any further then, replace both transistors and use 3.3K half watt resistors or even 1 watt metal film instead of the 1/4 watt that was in there. Measure all other resistors around the burned section don't trust they are ok even if not burned, sometimes they blow open circuit with no burn.
Many of these older NAD amps like to burn resistors, and very often they just shoved a 1/4w into where the service manual says a 1/2 w must go, see it all the time with them.
Hopefully you replace transistors, electrolytic caps and the resistors in that section and are good to go! (The green poly caps you can leave in, they last forever and I have never found a shorted one)
It may be a good idea to change the op-amp in the pre section (top right) just in case. With these things one needs to get all the possible blown components in a single shot otherwise the replacements keep blowing each other up and down the chain wasting time and confusing the issue.