ZOTL40
ZOTL40
The latest iteration of LTA's EL34-based ZOTL40 includes a revamping of the chassis designed by Fern & Roby and selected components improvements that take this 40-50 watt-per-channel amp to a new level.
Linear Tube Audio and David Berning have produced the ZOTL40 Mk. II. A worthy flagship and the most refined manifestation of Berning's ZOTL design. The ZOTL40 Mk. II Power Amplifier provides 40+ watts per channel with accurate, uncolored sound and automatically protected circuitry.
The Mk. II version incorporates KT77 tubes and a few other component changes to make this great amp even better.
FEATURES
Designed by David Berning
Hand-wound coils & impedance converters
40 watts per channel with little or no hum
Frequency response flat from 8Hz to almost 50Khz
Transformer-less design eliminates intermodulation distortion inherent in all transformer designs
Impedance converters effectively produce theoretically ideal output transformer turns ratio
Low impedance output easily matches a wide range of speakers and cannot be damaged with no load
No adjustments – tubes are auto-biased
Automatic protection circuitry
High voltage turn on delay to maximize tube life
10 - 20 years tube life depending on use
Push-pull, Class AB output stage
No heavy power or audio transformers
Berning-designed, custom universal voltage power supply (autosensing 100-240VAC 50/60Hz)
Has one input through Alps volume control
Second set of inputs bypass volume control for direct input www.theabsolutesound.com/articles/linear-tube-audio-zotl40-mk-ii-power-amplifier/
Uses 4 KT77s, 2 12AU7s, 2 12AX7s (can be used with EL-34s)
One year warranty including tubes (international buyers pay shipping)
SPECIFICATIONS
Amplifier class: Push-pull Class AB
Sensitivity: 1.2V RMS for 40 watts output
Output impedance: 1.6 ohms
Input impedance: 50k
100V / 120V / 240V operation: Auto-switching
Hum and noise: 94dB below full output (measured between 20Hz-20kHz)
Power output with 4-ohm load: up to 51W, 0.5% THD
Power output with 8-ohm load: up to 46W, 0.5% THD
Frequency response (8-ohm load): 8Hz to 50kHz, +0, -.5dB
Finish: Aluminum case
Size: 8.5 inches, 9 inches, 14.5 inches (including binding posts)
Net weight: 9.7 lbs. or 4.4 kg
Tube complement: two 12AX7s, two 12AU7s, and four KT77s