Depending on your appetite for second-hand (quite old) equipment, i would go for Forte 4 amp...Class A, sweet, very powerful and well within your budget as an amp. Will drive Silverlines well which i recall are reasonably efficient. There is a Forte 6 amp,not quite as refined as the smaller Forte 4, but good.
audible illusions 3 preamp? tubed but much less maintenance than tubed amp...exceptional value for money and 2 here for sale at $1000.
audible illusions 3 preamp? tubed but much less maintenance than tubed amp...exceptional value for money and 2 here for sale at $1000.