Allegri Reference

The Townshend Audio Allegri Reference preamplifier is actually classed as an ‘Autotransformer Preamplifier’; an autotransformer is materially different from a standard transformer (which has entirely separate windings between input and output) in that it takes a single winding with 24 discrete output taps. This means that the Allegri Reference offers 129 half-decibel steps; a far wider range than anyone has managed with stepped volume pots. The Allegri works to a pure inverse-square transformer function, where you get four times the drive if you halve the voltage, this is a preamplifier that actually gets better at low listening levels, thanks to improved low impedance1.

The Allegri+ differs in functionality by adding a mute switch and a front panel input on a minijack and in appearance by better finishing and knurling on the knobs.