LTA ZOTL40
Power Amplifier
The ZOTL40 Reference amplifier is hand-built with premium components in Takoma Park, MD by Linear Tube Audio and designed by David Berning, one of the world’s premier amplifier designers.
Over the past year LTA has been diving into serious design development to expand and grow their business and in the process found opportunities to bring fresh insights and refinements into every one of the products in their lineup, including the ZOTL40 reference power amplifier.
The process to develop the ZOTL40 reference amp (MK III) included:
A thorough audit of the design and engagement with clientele and about how best to improve the product.
A rigorous testing phase including careful component auditioning (review & final selection) with a broad range of available loudspeakers on the market to produce an informed and balanced result based on what people want.
Design & manufacturing of a new chassis with a little help from Tektonics Design Group, the Industrial Design & Manufacturing firm behind Fern & Roby Audio. This included careful selection of materials and finishes, but also emphasized manufacturability, plus grounding and shielding design considerations.
The result is a significant improvement to the ZOTL40 that makes it one of our favorite power amps and our go to component for guaranteed excellence in a presentation.
LTA’s commitment to delivering awesome value to their clientele is demonstrated by their decision to supply the ZOTL40 reference amp with premium NOS Mullard EL-34 power tubes which really make this updated design really sing!
Specifications
Sensitivity: 1.2V provides full output
Output impedance 1.6 ohms
Input impedance: 50k
100V / 120V / 240V operation: Auto-switching
Hum and noise: 94dB below full output (measured between 8Hz-60kHz +0/-0.5dB)
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
Amplifier class: Push-pull Class AB
Net weight: 15 lbs
Finish: Aluminum case
Tube complement: two 12AX7s, two 12AU7s, &
four Mullard NOS EL-34s
Push-pull, Class AB output stage
No adjustments – tubes are auto-biased
More Information
The ZOTL40 Amp provides 40+ watts per channel outputs with accurate, uncolored sound and automatically protected circuitry. The hand-wound coils & impedance converters delivers 40 watts per channel with a frequency response flat from 8 hz to almost 50K hz. Also, the transformer-less design eliminates intermodulation distortion inherent in all transformer designs. The ZOTL40 Reference (Mk.III) sets itself apart from its peers, producing an unforgettably palpable and poignant listening experience, it also comes with a one (1) year warranty.
