RP5 discontinued

The RP5 is the low-compromise development of the RP3-VT.

The input stage uses two triodes while the output is a pure A-Class current stage employing bipolar power transistors — a hybrid technology that allows a direct output without transformer, maintaining all the natural sounds produced by the input tube stage.

Maximum circuital simplicity joined to precise calculation of the values and accurate selection of components. The design made wide use of computer simulation using Spice language, with mathematical models and algorithms created by the designer himself.

The amplifier topology is Single-Ended, Class A, Zero Feedback. The power supply is completely oversized, using a joint of classic RC cells and capacitance multipliers to give the purest DC supply.

Mechanically very solid, built in heavy aluminium and copper. Frequency response almost flat from zero to 50,000 Hz (< 1 dB); the exclusive IHC (Induced Harmonic Compensation) technique reduces harmonic distortion to a mere 0.2% at normal listening level; IMD is negligible. The RP5 drives headphones from 24 to 600 Ohm.