1980's Issue XFDT988N1:2 1:1 & 1:2 Hi-Fi Vintage Iron Step Up Stereo Audio Transformer | bignoiseradio.com/product/audio-magic-xfdt988n12-hi-fi-audio-transformer-step-up-iron

The "Audio Demo" has been done in 4 Bar sections; the 1st 4 bars start with the transformer enabled. Four bars in you will hear the transformer switched off (disabled), 4 bars after that the transformer is switched on (enabled) again. This is repeated across the entire track.

This essential passive audio magic XFDT988N1:2 brings depth, color, detail, improved sonic image, spacial separation, harmonics, volume boost and glue to your audio mix. Low-frequency phase shift enhances bass frequencies. A switch at the rear of the unit allows you to select 1:1 or 1:2 operation. Low through mid frequencies are enhanced in an amazing way when audio is passed through a step-up transformer. These are limited edition 1988 East European manufactured transformers, that were used in telephone systems, and are responsible for high performance audio distribution. Dubbed the Audio Magic XFDT988N1:2, this piece of gear will add subtle character to your audio recordings and mixes. Sounds are glued together, in an ear pleasing way, as they transition through the magnetic medium.

This stereo European new-old-stock high performance audio output transformer, is a no compromise, professional audio signal transformer primarily intended for line level input and output applications. This broadcast / pro-audio quality audio signal transformer offers low distortion, even at high signal levels. These rare units provide a unique sound. We chose the 100% iron core transformer for this design because of it’s vintage coloring. It exhibits wide bandwidth, common mode rejection ratio (CMRR), and distortion characteristics from 30Hz to 24kHz. Steel transformer shield to provide electrical shielding.