All time classics? Your top 3 or 4?

Most of us here on AudiogoN have had more than our share of components and speakers...so:

What items do you feel are "all time classics"?

These would be audio products that set the standard for others and are (likely) even now well thought of.

I will start things off with:

1. The Dahlquist DQ-10
2. The Large Advent
3. The Conrad Johnson ART pre-amp.
4. The Classe CAP-100 integrated.

(I could/should have mentioned others...but that's why I started this thread!).