Product Description
*Available for Special Order, Call Store for Details*
Virtus S1S is a brand-new solid-state reference power amplifier in class AB with the first few watts in pure class A.
The "Virtus" was a specific virtue in Ancient Rome and it carries connotations of valour, manliness, excellence, courage, character, and worth, perceived as masculine strengths.

Highlights
- A fully symmetrical amplification stage is implemented using high-quality complementary J-FET transistors in the input section.
- The copper plates of the 350 mm² cross-section installed in the Virtus S1S are designed for heat dissipation without using heat-conducting washers, making the heat dissipation design from the power transistors highly effective.
- The copper plates designed for heat dissipation also supply voltage from the high-capacity capacitors to the active components. That helps transform the dynamics peaks from the capacitors directly to the speakers reducing the output impedance.
- Ultra-low distortion of 0.006 % / 1 kHz, 5 W.
- Error correction is used to linearize each amplification stage individually. It involves applying local feedback to correct the signal provided by the swing stages of the VAS. This helps to prevent transient distortion from occurring
in the first place, rather than relying on overall feedback to suppress it. Ideally, this results in a weaker overall feedback circuit compared to one without error correction. - Virtus S1S features 5 pairs of output transistors per channel, with matched parameters to ensure uniform load on individual components.
- High damping factor and ultra-low output impedance.
- Virtus S1S features power and signal sections that are mechanically separated with 10 mm thick aluminum shielding.
Specifications
Output power | 2 x 400 W / 4 Ω 2 x 250 W / 8 Ω |
Gain | 26 dB (XLR), 20 dB (RCA) |
Frequency range | 20 – 20 000 Hz -0.1 dB / 5 W 5 – 250 000 Hz -3 dB / 5 W |
Input impedance | 200 kΩ (XLR), 33 kΩ (RCA) |
Inputs | 1 XLR pair, 1 RCA pair |
Total Harmonic Distortion | < 0.0002 % / 1 kHz, 5 W |
Signal-to-noise ratio | > 120 dB |
Filtration capacity | 107 600 uF / 100 V (per channel) |
Trigger | Yes |
Power | 230 V / 50-60 Hz / 1600 VA |
Dimensions (w x h x d) | 450 x 210 x 522 mm |
Weight (net) | 39 kg |