Interstage, Driver Transformers

It is becoming increasingly obvious that applying a transformer at every stage of an amplifier yields a great benefit in sound quality, provided of course the transformer in question is of an appropriate quality and design.

Replacing any coupling capacitor with a well-designed and correctly matched driver or interstage transformer yields an almost shocking improvement in sound and should be tried to fully understand what a good wideband transformer has to offer.

Audio Note offers 3 types based on your preferred interstage valve, see the list below. There are various versions of each available not only copper (primary winding) / copper (secondary winding) but also copper / Audio Note™ silver and all Audio Note™ silver wired versions. There are also the I/E or double C-core versions with different core materials available too.

All Copper – Copper transformers have copper lead-out wires, Copper – Silver has copper on the primary and Audio Note silver lead-out wires on the secondary and silver is naturally silver all around.

All Audio Note`s interstage transformers are the same size, copper frames come as standard, 78mm wide by 67mm high by 67mm deep, with mounting holes centre to centre at 54mm by 54 mm both with transformer standing up or lying down. Step down ratio is 1:1. Standing current where applicable is 10mA for TX-IT-013, 20ma for TX-IT-014 and 30mA for TX-IT-016

SUGGEST VALVES

ECC82, 5687, E182CC, 6SN7, 6463 for TX-IT-013 types.

6BX7, 6DN7, 6SN7GTB for TX-IT-014 types.

437A, 417A or equivalent for TX-IT-16 types.

PLEASE NOTE AUDIO NOTE'S COPPER SHROUDS ARE NO LONGER AVAILABLE