Rega Exon 3 Mono Power Amp

The Exon 3 is a high performance symmetrical circuit power amplifier housed in an extruded aluminum chassis with heat sink. Rega has improved on the original Exon power amplifier but kept the same level of sonic performance and synergy as the original. The Exon 3 has a fully protected output stage with DC and electronic thermal protection, as well as a supply monitor for both transformers. High performance Evox polypropylene capacitors have been used in the signal path.

The power amplifier uses a fully symmetrical circuit topology throughout, with a low distortion, high linearity and bandwidth common base voltage amplifier driver stage. This type of circuit topology will provide the necessary voltage swing to enable the Exon to drive the speaker system with minimum distortion. Four Sanken 200W output transistors are used in a "triple" high current output stage, thus enabling the Exon 3 to drive the most awkward of speaker systems. Circuit modeling and listening tests have been used to ascertain the highest level of sonic performance and reliability.

The power supply uses two generously rated toroidal transformers with high-grade core material, combined with 37,600mF of parallel connected smoothing capacitors, providing more than enough current to drive the hardest of loads. All input and driver stages are fed from a fully regulated supply providing a stabilized voltage, ensuring the highest level of sonic purity.

The high current supply utilizes fast recovery diodes in the rectifier. These diodes generate less high frequency switching noise, therefore giving rise to a cleaner DC supply feeding the high current power-output stage. High performance Cerafine capacitors are used in all the critical positions within the amplifier circuit. These along with high performance Evox polypropylene capacitors in the signal path yield top-notch sonic performance and musical results.

FSC Quattro is used in the internal speaker wiring, and this combined with improved speaker binding posts will result in a better sonic performance and musical results. The improvements to the power supply and the internal wiring plus the upgrades to the capacitors and transistors, all amount to a significant improvement to the overall performance of this already high performance amplifier.

Rega Exon 3 Features and Specifications