Tektons pair best with tubes. I put mine up for sale because I just wasn't happy with the sound. I potential buyer asked if he could bring his amp over. I listened to 30 seconds of the first song and told him that I would honor my offer to sell to him but if he doesn't buy them they are not for sale. He didn't and I'm very happy with them now that they are SET powered.
Indeed they are big, plain, boxy and probably ugly to many. I think a lot of people reject them when the see them and "confirm" when they listen to them.
Jerry