Can't say about the 3026A, but the 3006A power amp is anything BUT bright. Its character is warm and slightly dark. I used this amp in my main system for about 15 years. The 3008A companion pre-amp is slightly bright, so the pair gives a pretty neutral overall sound. In comparison, the 3006A is somewhat darker than the Rowland Model 10 I currently use and quite a bit darker than an Aragon 4004mkII. Its sound is actually quite similar to a Cary V12 tube amp I had on loan, except the Cary had a looser bass. I currently use the 3006A as a subwoofer amp in my home theater where it does an excellent job.
Tandberg sounds bright.
Just got a Tandberg 3026A 150X2 amp. After letting it run for 24 hours I gave it a critical listen and it just sounds forward and bright. I did have it worked on for a weak solder joint. One channel did drop out again but came back. Anyway, are Tandbergs all forward and bright or is this weak solder joint(and resistor replaced) causing this. I thought this was a very good amp. Comparing to a Bryston 4BSST. The reason I got the Tandberg is I could not afford one years ago and just wanted to own one now and see how it sounds. Any and all replies welcome about any aspects of Tandberg. Mike