Hi Louk,
sorry for the late answer, but i was really bussy in the last weeks, so there was no time to think about amps. The Guyatone 1030 i had, was a quite nice little amp, especially concerning the weight. But the sound was not convincing at all, even after repairing the tremolo and changing all capacitors to new and good ones. It was allmost impossible to get a little crunch with it. Therefor i asked the Forum here for help, which i got from Andy and Michael. With Andy i talked a lot on different possibilities and finally i took his advice to rebuild the amp completely to a Matchle$$ Spitfire clone. This was surprisingly easy, because i was able to keep and reuse all transformers, the complete tube heating wiring, the tubes and the speaker. I took out the guyatone board including the pots in case i want to rebuilt it later on (Which will never happen). As the Spitfire has a simple layout with only little parts the new board was quite inexpensive. It is surprising how well this simple amp is doing. Never thought that i will not miss for example reverb on an amp. you really don´t need, this amp sounds!! Concerning the setup of the amp i had only little trouble with minor bugs. Everything was easy to solve with the help of Andy and Micha. Now after this big success i´m thinking about adding a second stage to the amp. I allready got all parts to build up a lightning (also Matchle$$ clone), but i´m not yet shure how to switch between both stages. If this is not convincing, may be i try another preamp stage.
To come to an end, i like to say that this amp is the first where also my wife said, that it sounds good. Therfore if you are not satisfied with the sound of your guyatone, then sell it or try the spitfire layout if you have some experience in high voltage and soldering.
All the best
Gerhard