SUGDEN: Masterclass FPA-4 Power Amplifier

They say .....

The FPA-4 power amplifier is the latest member of the Sugden Masterclass Family. This output stage is of the classic Sugden pure class A single ended design which has given musical satisfaction to thousands of discerning music lovers over many years. The amplifier benefits from a comparator and correction circuit so that errors which would occur in the power stage, due to varying loads and distortion, are corrected to match the output of the high impedance input amplifier.

Whilst it is maintaining the signal authenticity it is also increasing the load stability and forces the output impedance to zero. The Amplifier with Sugden Error Correction has extremely low open loop output impedance with a resultant high damping factor at quite high frequencies.

Coupling of the output of the Amplifier to its .....

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