Hyper Linear Preamplifier

Howdy @AllenB , it appears that whatever "Hyper Linear preamplifier" actually IS, it certainly is not related to Pass Labs. Not even one little bit. Hyperlinear Ltd. seems to have been a (quickly dissolved) partnership between British designers Tom Evans and Anthony Matthews. Neither one of whom is named "Wayne" or "Nelson" or "Joe Sammut". The company seems to have focused upon valve (vacuum tube) circuitry.

Fire up the Googles and see whether you agree.