You can get in the game at the $1500. Bob Latino ST-70 is a great little amp. I bought one just t dabble in tubes and it replaced a much higher priced and wattage SS amp. The problem MAY be that it is 35wpc & your speakers 90db sensitivity. Sounded great on my Silverline’s. But they are 93.5 db. So I’m unsure. Bob can tell you though. He is very good service & the amp is a tube rollers dream. If you can stretch to the ST120 though it will give you more head room at 60wpc. Both great amps. If you can solder and follow instruction they also come in kits which is in & below your budget. BTW, no affiliation. Just a fan. My review is at AA
tubes4hifi amplifier KITs page
Then too check with Underwoodf Hifi. I’ve seen them have great sales on the Black Ice amps w/ 45-50-55 wpc that fall into your budget. I’ve never heard them but they get good reviews