Virtus S1S • Reference Line

Dual mono transistor power amplifier

 

Reference-class transistor output stage with Class AB technology, which reproduces the first watts of power in pure Class A circuitry.

Highlights

 

  • Fully symmetrical input stage with high-quality complementary J-FET transistors
  • Extremely effective heat dissipation with 350 sq mm copper plates, which also supply the active components with voltage from the high-performance capacitors in order to transfer the dynamic peaks directly from the capacitors to the loudspeakers and reduce the output resistance
  • Extremely low distortion of 0.00025% at 1 kHz 5 W error correction to linearise each individual amplifier stage with local feedback to correct the signal provided by the VAS oscillation stages in order to prevent transient distortion from the outset, rather than relying on overall feedback to suppress it
  • 5 pairs of output transistors per channel with matched parameters for even loading of individual components
  • Unique heat dissipation via copper plates also reduces output impedance
  • Special feedback circuits for linearising the amplifier stages
  • Extremely low distortion factor means ultra-low distortion
  • Recommended retail price: 19,990.00 €

 

Animated 3D view

Silver-coloured housing design

Rear view

Technical data
Output power: 2 x 400 W at 4 Ω • 2 x 250 W at 8 Ω
Gain: 26 dB (XLR) • 20 dB (RCA)
Frequency range: 20–20,000 Hz (−0.1 dB at 5 W) • 5–250,000 Hz (−3 dB at 5 W)
Input impedance: 200 kΩ (XLR) • 33 kΩ (RCA)
Inputs: 1 x XLR • 1 x RCA
Total harmonic distortion (THD): < 0,00025 % at 1 kHz, 5 W
Channel separation: 120 dB
Filter capacity: 107.600 μF / 100 V (per chanel)
Trigger input: yes
Power supply: 230 V / 50–60 Hz / 1600 VA
Dimensions (W x H x D): 450 x 210 x 522 mm
Weight (net) 39 kg