CordellAudio.com - The Super Gain Clone™

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The Super Gain Clone™

The Super Gain Clone™ stereo amplifier is based on the National Semiconductor LM3886 Integrated Circuit power amplifier chip. Its features are summarized here:

40 Watts per channel into 8 ohms from LM3886 devices
LM3886's operated in inverting mode for best performance
Inverting input buffer stage provides overall non-inverting amplifier
Audio-grade DC servo control of output offset voltage
No output coupling capacitor to degrade sonics
No input stage feedback return capacitor to degrade sonics
No electrolytic capacitors in the signal path
High input impedance
Adaptive soft clipping (Klever Klipper ) ahead of the feedback loop
The amplifier-proper never clips
Extra input-path RFI filtering
Conjugate-matched pi output network for exceptional RFI immunity
Torroidal air core output inductor for HF stability without sonic degradation
Heavily snubbed and bypassed power supply with 60,000 uF per rail

Many details of the design of the Super Gain Clone are covered in Chapter 27 of Designing Audio Power Amplifiers, while the Klever Klipper soft clipping circuit is described in Chapter 17.