Sputnik Modular's Spectral Processor is a filterbank of 16 bandpass filters tailored for a variety of spectral applications. You don't need a keen eye to see that this module is inspired by the Buchla 296. It differs from its predecessor in that the bandpass program control now features discrete transistor VCA's on all channels. The odd and even amp controls now have full attenuation capabilities, plus the added benefit of soft saturation beyond 60% travel, allowing for richer, more textured sounds.