I have worked on and rebuilt Altec 19's. When done properly, they are a fine speaker. If you have been happy with your Pioneer Spec Gear, I would stay with Solid state gear, Although 10 watts or more power of tube gear sounds quite good on those. My instinct right off the bat is to look for 30 to 50 watts of pure class A, Although, I've heard them with the same power Class D with great results also. Look for smooth, yet reasonably detailed gear. Things have improved since your spec gear, you're in for a treat.
I feel it is time to upgrade my 1977 system.......
I have been enjoying my Pioneer Spec 1 and Pioneer Spec 2 system for a very long time and I have been having issues that have exhausted my patience and nearest shop is 3 hours (each way) from home. I only listen to my Music Hall TT that pleases me. My speakers are from 1976 Altec Lansing Model 19 that have been freshend up and I love the sound, I guess because I have been so accustomed to them and I'm sure there are many diff speaker options but for now I wish to continue with the Altec's. My quest is to replace my amp and preamp.........I have some logistical problems to deal with. I have ONE!!!! location for new gear, a shelf that is 51 inchs long and 18 inches from a wall to the front edge of the shelf, shelf will handle 200lbs. My Pioneer amp has ample power and I would like to remain close to the same amout of power. If you have some ideas for me I would love to hear them. Not sure how I feel about tube gear since I have no background at all so I (think) I'd rather not go that route, but feel free to change my mind. Budget not to exceed 18k including cables. I know there is a wealth of knowledge here unfortunately I have very little to offer so I thank you greatly in advance......