Vitus RS-101 Stereo Power Amplifier

The RS-101 is Vitus Audio's Reference Series stereo power amplifier — a fully balanced, Class AB design that delivers 300W per channel into 8Ω and 840W per channel into 4Ω, and that sets a new standard for what a dedicated power amplifier at this level can achieve. It is the natural partner for the RI-101 Mk.II in a bi-amplification configuration, or as a standalone power amplifier driven by a preamplifier of equivalent ambition — and in either role, it brings an authority, control, and dynamic headroom to demanding loudspeaker loads that an integrated amplifier, however exceptional, cannot fully replicate. The RS-101 is not a compromise; it is a declaration that more power, more control, and more authority are always worth pursuing.

Fully Balanced Architecture

The RS-101 is designed around a fully balanced circuit from input to output, accepting both balanced XLR and single-ended RCA inputs. The fully differential signal path ensures that common-mode noise is rejected at every stage — a discipline that is audible as a blacker background, finer retrieval of low-level detail, and a more stable and precisely defined soundstage. This is the same fundamental architecture that runs through every product in the Vitus Audio range, from the RS-101 to the Masterpiece Series monoblocks — a discipline that Vitus Audio's engineers refuse to compromise at any price point.

Class AB Operation

The RS-101 operates in Class AB throughout its power range — a topology that Vitus Audio's engineering team have refined over decades to deliver the musical engagement and low-level transparency of their Class A designs, without the thermal and power consumption demands that pure Class A operation at 300W per channel would entail. The Class AB operating point has been set with the same care and precision as the Class A bias in the higher Vitus products, and the result is an amplifier that combines the authority of high-power Class AB with the musical immediacy that defines every product bearing the Vitus Audio name.

Bi-Amplification with the RI-101 Mk.II

The RS-101 was conceived as the ideal power amplifier partner for the Vitus RI-101 MK2 in a bi-amplification configuration — a combination that transforms an already exceptional integrated amplifier into a system of considerably greater authority and dynamic control. Used together, the RI-101 Mk.II and RS-101 form a Reference Series system of extraordinary coherence, combining the preamplifier section of the RI-101 Mk.II with the dedicated power amplification of the RS-101 to deliver a result that neither component achieves alone. For those considering a dedicated digital source to complete the system, the Vitus RD-101 DAC is the natural Reference Series partner.

Technical Specifications

Who Is It For?

The RS-101 is for the listener who wants the authority and dynamic headroom of a dedicated stereo power amplifier within the Reference Series — whether partnered with the Vitus RI-101 MK2 as a bi-amplification system, or driven by a dedicated preamplifier of equivalent ambition. For those considering stepping further up the Vitus power amplifier range, the Vitus SS-025 and the Vitus SS-103 Power Amplifier make illuminating comparisons at our Norwich showroom — and we will ensure you have the time and the system context to make the right decision.

Buying from Martins Hi-Fi

Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind. The RS-101 is available to audition at our Norwich showroom — speak to Dave or Chris, who know the Vitus Reference Series in depth and can guide you through the choice between integrated and separates amplification, and the considerable merits of bi-amplification with the RI-101 Mk.II. A power amplifier at this level deserves a proper audition, and we will ensure you get one.

Contact us at info@martinshifi.co.uk, call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.