SWAMP stands for SWitchingAMPlifier. The Swamp is a PWM-controlled power amplifier and is therefore one of the first "digital" power amplifiers with powerful performance. The power amplifier was built around 1978. This SWAMP was only built very limited (150 pieces). It was part of a small series together with the F.E.T.Preamp and the Servostatic System.
Some technical data:
Information comes from www.infinity-classics.de and the release of the data is approved.
Output power: 250 watts RMS 8 ohms per channel
Frequency response: 10 Hz - 100 kHz
Power bandwidth: 20 Hz - 20 kHz
Harmonic distortion: less than 0.1% to full output power
IM Distortion: less than 0.1% to full output power