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*(Quad Mono is  RudiStor trademark and mean Dual-mono Balanced made by four Single Ended Amplifers)

RPX-303 is a full balanced quad mono amplifer dedicated to high demanding audiophiles, is it made by two independedent dualmono solid state A-Class, amplification units, with double power supply.It have unique 4 section high quality potentiometer in otder to make simple the use and the reaching of desired volume

RPX-303 is a pure Class A amplifier, working both in balanced or unbalanced modeaither in  input and output, or in any combination of them. The high current output, the absolute zero negative feedback (local or global) and the great capability of controlling the transducers make RPX-303 an astonishing transparent and dynamic amp.

The double dualmono topology ensures the deepest and more natural head-stage. The oversized four section power supply ensure more then needed clean current, the enclosed transformers ensure no EMI roaming around amplifier, hence no hum or buzz.

What to expect from its sound?

Well the feeling of sound deepness, along with the sound coming with incredible dynamics form a pure black background, in a correct linear reproduction, is the best way to describe the performance of the RPX-303 that improve the already top notch performance of the 300, sure it will surpass the most exquisite demands of the more refined audiophiles.

It is well known that an headphone amplifier is always a good preamp for power units driving speakers,as well as for amplified boxes so a top unit like the RPX-300 become an unbeatable preamplifier. In order to give the user the possibility of fully enjoying this feature the RPX-300 have a double pre-out connection (balance and unbalanced)

RPX 300 operative modes

• Balanced Input to Single Ended Output
• Balanced input to Balanced output  ( full Balanced mode)
• Unbalanced Input to Balanced Output ( trough an internal phase splitter)
• Unbalanced Input to unbalanced output. ( traditional SE dualmono amplifier)

Headphone Outputs

• Balanced left and right
• 2 x 6.4mm jack ( unbalanced out)
• All the output can be used at same time

Preamplifier output ( standard )

• Balanced Out XLR
• Unbalanced Out R-L RCA

 Two set of input ( balanced and unbalanced ) and volume controlled output

The set of output sockets can be configured to be controlled by the volume knob, making the RPX303 a great pre

The RPX-300 comes from the research done at  RudiStor R&D labs, it use only discrete components,  since RPX-300 use four independent high current power amplifiers based on bipolar transistors, it is a pure quad mono amplifier. The amplification units work two per channel , with seprated power supply and separated volume controls, it have zero negative feedback. Some real no compromise solutions

RPX 300 Quad Mono Headphone Amplifier is made in Europe in respects of CE regulations by profesionlas and qualified laboratories under supervision of  RudiStor R&Dlabs

.SPECIFICATIONS