Since 1968:
Lafayette 2-way 8" acoustic suspension.
KLH 32
Advent Smaller
Advent Loudspeaker
Dahlquist DQ10a
Double (stacked) Rogers LS 3/5a
Quad ESL(57)
Celestion SL6
Pro Ac EBS
Meridian M20
B&O 8000
Rogers LS 3/5a single
Silverline SR16
Zu Druid 4
Zu Definition 1.5
Zu Definition 2
Zu Definition 4
Zu Druid 5
Zu Druid 6
Zu Cube
Zu Definition 6
Since 1974: Stax SR-5 powered by SRA3S headphone amp
Also, Jecklin Float headphones powered by modified Dynaco ST70, ~1976-1982
OK, I'm old but so what. I've been spending my own money on hifi since 1968.
Zu has been in my systems exclusively since 2004.
Phil