MAD No. 6 - $7,900

MAD NO. 6 - 5 tube preamplifier
Back with DAC option
Dials for tube selection, lean to fat, source, and volume

Multipurpose Amplification Device No. 6 is the product of a collaboration between Swan Song Engineering and professional musicians to develop an amplification device that can be used in the recording studio or in the home.  In order to accomplish this lofty goal, the team focused on the areas of studio level sound quality, control, and flexibility.

The key to a high quality audio recording or reproduction is low noise.  MAD No. 6 uses both advanced power filtering and current sources to keep its power supply noise astonishingly low.  This means that MAD No.6 can operate in true SET fashion without any feedback.

With the power supply and current sources in place, the engineering efforts focused on making MAD No. 6 a first in preamplifier flexibility.  This starts with the ability to use the ECC85, 12AU7, 12BH7, 6CG7, and 6SN7 tubes.  Simply insert the tube of choice, set the first dial to the tube being used, set the lean to full setting, and enjoy.  MAD No. 6 can now produce 20 different "sounds".  

Flexbility continues with the configuration of MAD No. 6.  Configuration options include:

  • Choice of Analog, DAC, or Phono input module
  • Guitar amplifier module
  • Conversion into a amplifier with the buffer module
  • Choice of headphone amplifier module
  • Customizable edgelit lighting

Like all Black Swan products, no expense is spared in the building of MAD No. 6.  All parts are professional grade, interior signal path wiring is silver, and the chassis is powder coated stainless steel.

MAD No. 6 defines a new product category.  It provides the flexibility and control to meet your needs in a variety of scenarios.  From the headphone listener to the full blown stereo system.  From the consumer to the professional.  MAD No. 6 is designed to be customizable to meet your needs, tailored to meet your desired sound, and grow as your system needs change.

Here are are two sample files showing the differences between the 6CG7 and 6SN7 tubes both set to their fullest sound setting:


6cg7 sample full.wav


6sn7 sample full.wav


1kHz Signal to Noise at 2.83v into 50K ohms (6SN7 10dB per division)
  • Gain: 16 to 49
  • Distortion: Tube dependent .07% to .26%
  • Tube complement: 6CG7, 6SN7, 12BH7, 12AU7, ECC85
  • Signal to noise: Better than 90dB
  • Vampire Wire gold plated solid copper RCA jacks output
  • Neutrik Heapdhone XLR combination output
  • Phono Preamplifier option MC > 0.3mv with 4 loading options (configurable)
  • DAC option 2 192kHz optical, 1 coaxial (configurable), 1 set of analog inputs
  • Chassis: Powder coated stainless steel
  • Chassis color: Customizable
  • Logo: Customizable startup and ready colors
  • Dimensions: 12” wide 13.5” deep 4.5” tall
  • Weight: 22 pounds