MX-R Twenty : mono amplifier
Details
The MX-R Twenty was released in September 2014. This is the largest transformation we have ever made to a product. As an MX-R owner, you will keep your chassis, transformers, and binding posts of your current MX-R and literally everything else will be changed. Here is a short list of the new technologies and circuit changes;

Completely new "AyreLock" power supply.

Optimization of the current mirror in the Equilock gain stage.

Ayre’s exclusive Double Diamond output stage.

Significant part upgrades in all critical areas of the audio circuit.

Thorough fine-tuning of the audio modules.
Proceedure
Every MX-R being transformed to the MX-R Twenty needs to be returned to the factory or an authorized distributor.

To arrange an appointment for your MX-R please contact your local dealer.

In North America MX-Rs purchased from an authorized Ayre dealer will receive a new 5 year warranty upon transformation to a MX-R Twenty. If you live outside of the US, please check with the distributor in your country for warranty details.