Pair of AMPEREX MULLARD EL37 EL-37 Amplitrex Tested Tubes

This is a pair of Amperex Mullard EL37 vacuum tubes, which have been tested using an Amplitrex AT1000. The tubes are in excellent working condition and have no defects. They were manufactured in the United Kingdom and are suitable for use in vintage audio equipment. These tubes are highly sought after by audiophiles and collectors alike. The EL37 model was designed for use in high fidelity audio equipment and has a reputation for producing warm and clear sound. Don't miss your chance to own these rare and valuable tubes!