RI-101 MK.II
Integrated Amplifier
Reference Series
Expression, Emotion, Finesse.
Three words that best describe the RI-101 Mk.II and a hint at the feelings this integrated amplifier will engender in the listener. This amp, the first product designed for our Reference Series and the entry point to the world of Vitus Audio, quite simply sets a new standard for sound reproduction at this price point.
Our engineering team have created a component that raises the bar of solid state integrated amplifiers. With Vitus Audio’s signature minimal styling and the possibility of expansion with other components from the Reference Series, the RI-101 Mk.II will happily sit at the heart of your system for a lifetime.
Everything connected
The RI-101 Mk.II has three XLR (balanced), two RCA (unbalanced) inputs and can be specified with an optional DAC board offering a streamer (Ethernet) input, an S/PDIF (RCA) input and an AES (XLR) input. This is the workhorse at the heart of your system giving 300 W per channel to 8Ω speakers and 600 W at 4Ω.
In this iteration, experience enhanced resolution and blackness thanks to the updated input stage and pre-amplifier section. The noise floor is significantly lowered and the incorporation of the higher resolution volume control from our SL-103 and MP-L201 models offers you even greater control.
As Edgar Kramer, Editor-in-Chief at SoundStage Australia put it: “The Vitus Audio RI-101 is a stupendous sonic performer, excelling at the vividness and life of music… tight, punchy and detailed bass jumps from the mix while the RI-101 amplifier simply thinks, ‘Is this all you’ve got?’”
Connectivity with the optional DAC/Streaming module (2023 version)
The RI-101 Mk.II supports Mconnect, UPNP/DLNA, Tidal Connect, Spotify connect, V-tuner, Qobuz amongst others.
The RI-101 Mk.II is now also certified as a Roon Ready endpoint. Find out more on the Roon partner page.
Streaming with the Roon software
It’s important to note that while the RI-101 MK.II with the DAC/Streamer module is Roon Ready, it requires a separate Roon Core to function. The Roon Core acts as the central server that manages your music collection and streams audio to the RI-101 MK.II. This setup ensures a robust and high-quality audio experience, leveraging Roon’s advanced features and the RI-101 MK.II’s exceptional sound performance.
Finishing
The RI-101 Mk.II comes in Pure White, Jet Black and Warm Silver as standard. Titanium Orange, Dark Champagne and Titanium Grey are our most popular unique finishes.
Pure White
Standard colour
Jet Black
Standard colour
Warm Silver
Standard colour
Titanium Orange
Unique colour
Dark Champagne
Unique colour
Titanium Grey
Unique colour
Technical specifications
| Input | XLR analogue | RCA analogue |
|---|---|---|
| Available | 3 (L+R) | 2 (L+R) |
| Sensitivity | 2 VRMS | 2 VRMS |
| Impedance | 16kΩ | 16kΩ |
| OUTPUT (Each Ch.) | Speaker | Pre/Tape out |
|---|---|---|
| Available | 1 set balanced | 1(XLR) |
| Impedance | 0.075Ω | 33Ω |
| Power WRMS (8Ω) | ~8W Class A / ~300W Class AB | |
| Power WRMS (4Ω) | ~16W Class A / ~600W Class AB | |
| Bandwidth | +800kHz | |
| Signal to noise ratio | >100dB @ 1kHz | |
| THD + noise | 0.04% @ 100W / 1kHz |
| Volume Control | |
|---|---|
| Type | Relay controlled fixed resistor network |
| Steps | -80dB to +8dB in 1dB steps |
| POWER CONSUMPTION | |
|---|---|
| Standby | <1W |
| Operation | 90W (no load) |
| Operation with DAC Streamer | 120W (no load) |
| Operation with USB DAC | 120W (no load) |
| Dimensions | |
|---|---|
| Height | 182mm including feet |
| Width | 435mm |
| Depth | 470mm (with connectors) |
| Weight | 38kg (w/o DAC/Streamer) |
| Material | Aluminium for body parts and hidden heat sinks |
| DAC / Streamer Board (optional 2023 version)* | |||
| Inputs | Streamer | S/PDIF | AES/EBU |
|---|---|---|---|
| Connector | 1 x RJ45 | 1 x RCA | 1 x XLR |
| Impedance | 75Ω | 110Ω | |
| Max S/Rate | 384kHz + DSD128** + 384MQA | 192kHz | 192kHz |
| Resolution | 32bit | 24bit | 24bit |
| USB DAC Board (optional)* | ||||
| Inputs | USB | Optical | S/PDIF | AES/EBU |
|---|---|---|---|---|
| Connector | 1 x USB B | 1 x Toslink | 1 x RCA | 1 x XLR |
| Impedance | 75Ω | 110Ω | ||
| Max S/Rate | 192kHz + DSD128** | 96kHz | 192kHz | 192kHz |
| Resolution | 32bit | 24bit | 24bit | 24bit |
*Only one optional module can be fitted at a time
**DSD is converted to PCM
Reviews and awards
- 2025 | The Ear (UK) – RI-101 Mk.II Review (2025)
- 2025 | LP (DE)- RI-101 Mk.II Review (2025)
- 2025 | Audio-2G (IT) – RI-101 Mk.II Review (2025)
- 2024 | Stereophile (US) – RI-101 Mk.II Review – 2024
- 2022 | Image HiFi (DE) – RI-101 Mk.II Review (2022)
- 2022 | The WAM (US) – RI-101 Mk. II Review 2022
- 2019 | Tone Magazine (US) – RI-101 Review 2019
- 2019 | HiFi Plus (UK) – RI-101 Review 2019
- 2018 | SoundStage Australia (AU) – RI-101 Review 2018
- 2017 | Audio Korea (KR) – RI-100 Review 2017
- 2014 | Audio Accessory (JP) – RI-100 Review 2014
- 2013 | Positive Feedback (US) – RI-100 Review 2013
- 2013 | The Absolute Sound (US) – RI-100 Review 2013
- 2013 | HiFi Stars (DE) – RI-100 Review 2013
- 2013 | Australian Hi Fi (AU) – RI-100 Review 2013
- 2012 | ReMusic (IT) – RI-100 Review 2012
- 2012 | Stereo Times (US) – RI-100 Review 2012
- 2011 | GM2000 (TH) – RI-100 Review 2011
- 2011 | Haute Fidélité (FR) – RI-100 Review 2011
- 2011 | Hi Fi Choice (PL) – RI-100 Review 2011
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Create a Vitus Audio product in the style of your choosing. Our bespoke options include unique colour finishes and internal configurations to your requirements. Place your request with our team to create something just for you.
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