Linear Tube Audio ZOTL Ultralinear

ZOTL technology replaces the heavy, traditional output transformer with a high-frequency switching circuit. This eliminates the hysteresis and core saturation issues found in standard transformers, resulting in significantly lower distortion and a frequency response that extends far beyond typical tube designs.

Because the ZOTL design operates more efficiently and generates less heat, the tubes in this amplifier last significantly longer than those in traditional designs. You can expect between 10,000 and 20,000 hours of use before needing a replacement.

While 20 watts may seem modest, the ZOTL design provides high current capability and a low output impedance that allows it to drive a wide range of speakers effectively. It is best suited for speakers with moderate to high sensitivity, though it performs surprisingly well with many lower-sensitivity designs due to its exceptional control.

No, you do not need to worry about manual biasing. The amplifier features an autobias circuit for all tubes, ensuring they operate at optimal levels automatically whenever you install a new set.

Yes, the amplifier includes a stereo/mono switch on the chassis. This allows you to bridge the channels for increased power if you choose to use two units in a monoblock configuration.

The ZOTL Ultralinear features an advanced switching power supply that automatically detects and adjusts to 100V, 120V, or 240V inputs. This makes it compatible with power standards worldwide without needing manual adjustment.