Tube sound? I loved "tube sound" when I first got into this hobby about twenty years ago. Tubed products produced now have less of the "tube sound" that many used to find very attractive. The classic sound is very engaging but wears out its welcome over time. If you haven't had the opportunity to enjoy it and have it wear out its welcome, I don't want to be the one to stop you. Lush, exaggerated sound is wonderful for a while, maybe you want that.
I own a pair of 509s. The 509 Mk II's don't have a tube sound and are not a lush exaggerated sound. They are clear, clean and fast with tremendous bass, for any amplifier. Tube sound used to mean "beautiful" in a colored way, that's not the 509's. You may be disappointed if you want rose colored glasses. The 509's are certainly powerful enough for your application.
If you're looking for a typical tube sound, you should probably look elsewhere.
I own a pair of 509s. The 509 Mk II's don't have a tube sound and are not a lush exaggerated sound. They are clear, clean and fast with tremendous bass, for any amplifier. Tube sound used to mean "beautiful" in a colored way, that's not the 509's. You may be disappointed if you want rose colored glasses. The 509's are certainly powerful enough for your application.
If you're looking for a typical tube sound, you should probably look elsewhere.