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Andrew75 Is a Hi-End vacuum tube power amplifier distinguished by a passionate craftsmanship.

The accurate designing of every single detail, the exclusive use of the finest quality materials, the workmanship make Andrew75 a refined audio product, unassailable by time and fashion.

Stabilized power supply (discrete components), vacuum impregnated output transformers with split windings and special low leakage cores, final stage balance automatic control (ACCUBIAS *), highly symmetric circuits are only some of the features implemented after six years of innovation and listening, aimed at achieving the absolute sound purity.

According to Andrew75’s style, VU meters are vacuum tubes too.

Magic eyes, beyond their stunning appearance, allow bias adjusting and functioning control for a correct amplifier usage.

Input and output jacks are all gold plated. On off switch position and power supply plug are inspired by professional equipment standard. Output transformers, as known, are the components that mostly concur in making the quality of a power amplifier. Their construction is carried out with no compromise: the several layers winding requires many hours of an experienced technician’s work. Everything is enclosed in a screening stainless steel case, and then vacuum impregnated with resin. Through an apposite circuit, Andrew75 allows dumping factor equalization. In this way it is possible to drive loudspeakers reproducing an unrivalled natural sound. The musical involvement is so intense that elevates the listening experience to unprecedented heights. Accubias is an electronic circuit that automatically balances idling current between the power tubes.Its intervention is very slow and does not absolutely affect signal sound quality. By avoiding the magnetization of the transformer core, caused by an asymmetry in the final stage, Accubias prevents the possible deterioration of the output transformer transfer function and improves amplifier performances. Its action guarantees uniform ageing of power tubes, maintaining the finest sound quality as long as possible.