Quattro

About the Quattro

The Audion Quattro is a high-end, hand-built stereo preamplifier featuring pure Class A operation and a fully hard-wired audio circuit using solid silver wiring and specially selected components such as tantalum resistors. It includes a moving coil (MC) phono stage capable of handling the most sensitive cartridges and four line-level inputs plus an MC input. The design emphasizes simplicity and superb execution, with only four tubes in the entire signal path and a dual-mono construction with separate power supplies using polypropylene capacitors. The Quattro offers outstanding transparency, lightning-fast response, and exceptional resolution, delivering a fluid and controlled soundstage with seamless roll-off and convincing depth. It is available in two versions: a 2-box and a 4-box configuration, with 17 and 21 active power supply stages respectively. The chassis is made of black powder-coated aluminum with a mirror-finished stainless steel top plate and badge. The phono stage uses a step-up transformer-less design for speed and fluidity without matching concerns. It is widely regarded as one of the finest stock preamplifiers ever made, praised for its sonic performance and build quality.