Following the success of the KT120 and KT150 tubes and the popularity of these tubes with High-End Audio manufacturers, the Tung-Sol KT170 tube has been developed to provide a beam tetrode with even more power capability.

The Tung-Sol KT170 has an original shape glass bulb that was designed specifically to maintain the highest vacuum and dissipate heat when the tube is operated at high power levels. The Tung-Sol KT170 also has an equipotential cathode for increased reliability and to effectively amplify audio frequencies in the output stages of High-End Audio equipment.

It is the largest and most powerful tube in the 6550, KT88, KT90, KT120, and KT150 series of audio tubes, with a massive power dissipation of 85 watts allowing amplifiers using a pair of these tubes to reach power output levels in excess of 300 watts.

Evatco sells single, matched pairs and matched quads of KT170. Remember you will need matched pairs or quads when replacing all but single tubes in your amplifiers.

Once purchased you may need your amplifier power tubes to be biased to ensure the longest life from your tubes whilst providing the best sound. Whilst some systems provide a bias function, often you will require the help of a technician to bias your tubes.