
SM-025 marks a new era in Vitus Audio design and the first new product to arrive in a number of years. The Vitus Audio ethos has always been to release products only when they can bring something significant to the table. There’s no annual release schedule because, frankly, creating perfection takes time. And this new dual chassis monoblock amplifier takes the brand closer still to that point of perfection.
Founder Hans-Ole has a visionary design approach and with the SM-025 has delivered a device that celebrates music’s intrinsic emotional depth and vitality. The SM-025 reveals a vivid and holographic soundstage, marked by stunningly realistic dynamics. From intimate acoustic ensembles to expansive orchestral landscapes, the amplifier offers a genuinely immersive listening experience, faithfully capturing the spirit and atmosphere of each recorded moment.

With a robust output of approximately 100 watts in pure Class A and surging dynamically to a formidable 400 watts at 4 ohms in Class AB, the SM-025 confidently drives even the most demanding loudspeakers. At its core lies a custom transformer boasting remarkably low losses (below 2%), coupled with a substantial capacitor bank of 180,000μF per channel. True balanced circuitry from input through to output and an uncompromising zero global negative feedback design ensure sonic purity.
The newly scaled chassis is thoughtfully engineered to enhance airflow efficiency, safeguarding critical components and significantly reducing interference. Every detail – from the refined internal shielding to the meticulously arranged layout – is dedicated to a refined listening experience, free from distractions or technical artefacts.
| Inputs (Each) | XLR analogue: 1 RCA analogue: 1 |
| Input Sensitivity | XLR: 2 VRMS RCA: 2 VRMS |
| Input Impedance | XLR: 10kΩ RCA: 10kΩ |
| Output (Each) | Speakers: 1 |
| Output Impedance | 0.075Ω |
| Power Output (8Ω) | ~50W Class A / ~200W Class AB |
| Power Output (4Ω) | ~100W Class A / ~400W Class AB |
| Frequency Response | 5Hz–100kHz (filter on) / DC–100kHz (filter off) |
| Signal to Noise Ratio | >110dB @ 1kHz |
| THD + Noise | <0.01% |
| Power Consumption (Each) | Standby: <1W Class AB: ~70W Class A: ~135W |
| Dimensions (Each) | Height: 177mm (including feet) Width: 435mm Depth: 436mm / 467mm with binding posts |
| Weight (Each) | 38kg |
| Materials | Aluminium for body parts and heat sinks |
Newcastle Upon Tyne
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