How would improving power supply regulation by using say 300VA toroidal transformers and larger filtering capacitors suit the AKSA?
We have found that overly large toroidal transformers do not actually improve this amplifier, rather, they appear to slow it down. Two transformers give much superior stereo image, particularly depth, and once you have heard the difference, you’d never use a single power supply for both channels. Mounting in the one box is fine, and causes no problems. Transformer regulation should not be better than about 5%; more regulation sharply increases primary and secondary inductance, which adversely affects the sonics of the amp. For similar reasons, the capacitance should not exceed 10,000u F per rail per channel. We realise this is in surprising disagreement with many commercial solid-state amps. They seem to benefit from very large power supplies, but the reasons are related to the nature of the feedback overload function and the operation of the voltage amplifier, which in the AKSA amp s is super-fast; we use 100MHz transistors in this role. We emphasise that the amp was not merely develo
