Aura Amplifier Repairs

Aura Evolution VA-100

This hummed and distorted, everything looked fine inside but turned out it was unstable and probably oscillating at some MHz. Reason being; the fusible 10ohm resistors in the Zobel circuits and the 0V return to chassis were open circuit.

Aura Evolution VA-100 Amplifier Aura Evolution VA-100 Amplifier Aura Evolution VA-100 Amplifier Aura Evolution VA-100 Amplifier

Aura VA-100

Aura Evolution VA-100 MkII Amplifier

This had a blown 2SK1058\J162 (FET), a burnt up 2K2 resistor and 470ohm presets also needed replacing.

Aura Evolution VA-100 MkII

Aura Evolution VA-100 MkII Amplifier Aura Evolution VA-100 MkII Amplifier Aura Evolution VA-100 MkII Amplifier

This had been pop\crackling for a while, it got worse until it expired altogether. The plugs for the +\- supplies to the amp had burned away the solder, the tracks needed repairing. Sounded fine after the repair. It uses MOSFET's for the o\p's.