Line Stage Preamplifier

Sonus Veritas has designed a quiet, versatile line stage preamplifier that uses an unconventional approach to support the goal of extracting the maximum pleasure from your music sources.  We focused our efforts on developing a preamplifier with the following goals in mind:

  • Very quiet circuitry to ensure that preamplifier noise is never an issue that detracts from low level musical detail resolution
  • Enough user adjustable gain flexibility to accommodate a wide range of power amplifier configurations
  • Low impedance unbalanced (RCA) and balanced (XLR) outputs to enable a high quality interface with all amplifiers
  • Stabilized vacuum tube operating conditions so that no adjustments are ever necessary to get the best performance throughout the life of the preamplifier, even in the face of the inevitable tube replacements
  • Good interface flexibility with provision for balanced and unbalanced inputs and outputs, as well as polarity inversion and stereo/mono switching

After experimenting with a number of approaches, we chose a single stage differential transformer-coupled topology that satisfies the goals above and provides a music reproduction experience that has to be heard to be believed.  Some of the technical attributes of this choice include:

  • Differential circuitry, which rejects common mode noise resulting in cleaner sound reproduction
  • Tube amplification circuitry supported by solid state devices, which provides a near ideal operating environment, for the preservation of music quality
  • Use of Lundahl audio coupling transformers manufactured with high technology amorphous metals to facilitate the optimal interface with source components and amplifiers


  • Four unbalanced (RCA) and three balanced (XLR) stereo inputs
  • Two stereo pair unbalanced (RCA) and two stereo pair balanced (XLR) outputs
  • Flexible grounding options for inputs and outputs to eliminate ground loop hum/buzz
  • Source selection, volume, mute, polarity inversion, stereo/mono, gain, and panel light brightness controllable on the front panel
  • Remote control for power, volume, mute, polarity inversion, stereo/mono, gain, and panel lights
  • Innovative TubeLife Monitor that indicates when tubes should be replaced

6dB Low Gain Mode or 12dB High Gain Mode, user adjustable
Output Impedance
Low Gain Mode: 100 ohms High Gain Mode: 400 ohms
Maximum Output Level
(low gain mode@1KHz): 10VRMS
Frequency Response
-3dB at 5Hz and 85KHz
Tube Complement
4 x 6N30P (6H30pi)
45 lbs (20.4 kg)
Shipping Weight
49 lbs (22.2 kg)
18” W x 5” H x 15” D (46 W x 13 H x 38 D cm)

Please contact us directly for Warranty details.

 Contact us for current options available on the Genoa.