The amplifier has three inputs, selector, volume control, weighs 15kg, with power of 5W (recommended use with high efficiency speakers in which case the power is more than enough for a spacious room).

About 509

OTL amplifier’s special topology differs from other tube amps because there are no output transformers (which are located between the output tubes and speakers) and the signal travels directly from the lamps to the speakers which provides the highest fidelity sound. The amplifier is crafted in a walnut and its robust 3mm aluminum construction of 3mm in addition to the design, provides the dependability and endurance. Carefully selected components ensure delivery of the highest quality sound and long-standing use.