I owned the BP-20 with MPS-2 power supply. I have heard the BP-17 with Bryston Cubed gear. Bryston's Gary Dayton said the BP-17 was their best preamp (2 years ago) until the BP-26 is refreshed.
I own the HPA4 (LA4 + headphone). For me it is no contest. The HPA4 is the very best piece of gear I have ever owned. The most expensive preamp I owned was a BAT VK-42SE which was $7K I think. The HPA4 has no sound signature so that may not float your boat but for me that is what I am after.
Others are comparing it to $20K preamps. I am going to buy a second one (likely LA4) for my downstairs rig. Since I just finished building my office rig today, I am now thinking of the downstairs rig.
BTW - TAS is reviewing the LA4 this month. I bet it is a rave (but it only costs $2500)
I own the HPA4 (LA4 + headphone). For me it is no contest. The HPA4 is the very best piece of gear I have ever owned. The most expensive preamp I owned was a BAT VK-42SE which was $7K I think. The HPA4 has no sound signature so that may not float your boat but for me that is what I am after.
Others are comparing it to $20K preamps. I am going to buy a second one (likely LA4) for my downstairs rig. Since I just finished building my office rig today, I am now thinking of the downstairs rig.
BTW - TAS is reviewing the LA4 this month. I bet it is a rave (but it only costs $2500)