Q-tron Audio PA3B 2x8W Push-Pull Tube OTL Power Amplifier

The A3B is a tube OTL amplifier that achieves 10 times lower distortion than other OTL (Output Transformer Less) amplifiers due to its unique driver circuitry. Each channel is equipped with two 6C41C tubes, and a unique driver stage achieves an output of 8 W. Distortion at 0.5W is as low as 0.01%, and active noise reduction also keeps hum and noise at very low levels.

The PA3B uses a Futterman circuit that eliminates the output transformer and provides excellent frequency response and outstanding low distortion. Futterman circuits are known for maximizing the clarity and realism of sound, especially in OTL (output transformerless) amplifiers, and are designed to maximize their characteristics.

The PA3B is a low-power version of the PA12, and the PA12 was reviewed by Dick Olsher in "Enjoy The Music" and rated "The Q-tron PA-12 is second to none". It was also hailed as "a tube amp that redefines the possibilities of push-pull design." You can fully enjoy the excellent sound quality and transparency of the PA12 with the PA3B.

The design of the PA3B uses a large PCB board, with the exception of critical parts that significantly affect sound quality, and the critical parts are assembled using point-to-point (PtP) technology. It uses ceramic solder supports and is built to withstand up to 5 kV. The chassis is made of 10 mm thick aluminium, which provides outstanding mechanical stability and completely eliminates noise caused by vibrations.

The PA3B is a model that pursues the rich expressiveness of a tube amplifier and the transparency of an OTL amplifier to the utmost limit. Its clear sound will deliver a new excitement to true music lovers.