John Rumm wrote:
On 04/03/2011 08:55, sm_jamieson wrote:

There are some caps (more expensive) marked "for audio" etc.
Is this just marketing, or is there anything different ?
Surely in the power supply they cannot make much difference ?
I am sceptical myself.

When you think that an amplifier is in its simplest analysis a voltage
(or current) modulated variable output power supply, you appreciate the
PSU is a fairly critical part that is actually in circuit with the load.

Fairly NON critical part actually. Since the feedback that controls the
output is taken from across the load, not the power supply.

That is the trouble with 'simplest analyses'..