AudioNautes OTL

COMING SOON

The model OTL is the only AudioNautes amplifier without audio trasformers!

This is the result of 15 years of personal research on OTL schemes and materials and for the first time ever it will offer a carbon fiber chassis (with wood), able of effective vibration damping.

Moreover, this amp is completely Single-Ended with pure triodes, meaning the output stage it's not push-pull or balanced.

One channel of the Thesis prototype of the 1998

In 1993 the very famous quasi-single-ended OTL power amp was born, with an article published by Bersani-Camorani on the Italian magazine Costruire hi-fi in for parts in 1994. That fantastic project never stopped so far and a few years later two versions were published on Sound Practices, one with a microprocessor controller and the other one with 3 pairs of output tubes and zero-overall feedback. In 1998 a no-limits vesion was born, the one you see in these pictures.

One channel of the Thesis prototype of the 1998

Inside one channel of the THESIS prototype

Thsi version is 100x50cm per channel, weight is about 100kg per channel. Consumption is about 1000W (per channel) and the output power is 25W in pure class A (8ohm).

After more than 10 years, in 2010 we will present the LAST version. The best we can find worldwide for OTL topology, no-limits.

Main features:

pure triode circuit
no transformer in the signal path
full single-ended topology, from input to output
completely zero-feedback
hard wiring
multiple choke filtering power supply
fixes bias for both stages
fast-soft recovery diodes
low dissipation for triodes, for a very long life
mono
~30W @ 8ohm
wood and carbon fiber chassis

OTL is built on demand. Contact us.