Hi. I am a 65 year old hi-fi enthusiast, milling operator and car mechanic from Norway. Hi-fi and motorcycles are in my hobbies. Now I am in for buying a Bryston 4B-st amplifier, but I am unsure what to look for, I don't want to fell in a costly trap. There is only one owner from new. No documented services. You have to excuse my bad English writing. From before I have some JBL ti5000 speakers in excellent condition, as I think can work perfectly fine with such an amp. Does anybody have an opinion about buying this Bryston 4st amp? Best Regards.