RPX-300 discontinued

RPX-300 is a full balanced quad mono amplifier dedicated to high demanding audiophiles, made by two independent dualmono solid state A-Class amplification units, with double power supply. It has independent volume controls.

RPX-300 is a pure Class A amplifier, working either in balanced or unbalanced 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-300 an astonishingly transparent and dynamic amp.

The double dualmono topology ensures the deepest and more natural head-stage. The independent volume control avoids any channel signal cross-over, in order to assure the most accurate soundstage.

What to expect from its sound? Well the feeling of sound deepness, along with the sound coming with incredible dynamics from a pure black background, in a correct linear reproduction, is the best way to describe the performance of the RPX-300, sure it will surpass the most exquisite demands of the more refined audiophiles.

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

Headphone Amplifier operative modes

• Balanced Input to Single Ended Output
• Balanced Input to Balanced Output (full Balanced mode)
• Unbalanced Input to Balanced Output (through an internal phase splitter)
• Unbalanced Input to Unbalanced Output (traditional SE dualmono amplifier)

Headphone outputs

• Balanced left and right
• Unbalanced High Gain
• Unbalanced Low Gain

Preamplifier outputs (optional): Balanced Out XLR, Unbalanced Out R-L RCA.

Update — from July 2009 all RudiStor Balanced Amplifiers, in order to ensure the best compatibility to any kind of XLR plug and to reach the highest reliability, have adopted new balanced output sockets.

The RPX-300 comes from the research done at RudiStor R&D labs, it uses only discrete components, since RPX-300 uses 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 separated power supply and separated volume controls, it has zero negative feedback. Some real no compromise solutions.

The illuminated logo gives to the RPX-300 a fascinating and intimate look.

This product is made in Europe in respect of CE regulations by professionals and qualified laboratories under supervision of RudiStor R&D LABS. Made using lead free components and soldered with a lead free tin/silver alloy, in respect of environment as for EU directive.

Price (2011): US $2,800 worldwide (free worldwide shipment included) / €2,200 in the EU (VAT included, free Europe shipment). Delivery: 4 weeks.