Synthesis Soprano Integrated Valve Amplifier

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The Soprano is a beautiful sounding valve amplifier from Synthesis. Luigi's latest design brings technology and valves together for a sophisticated sound at entry level pricing.

The Soprano provides a minimum of 12 Watts per channel, power output from a pair of EL84's in Ultra-Linear (UL) - push/pull operation and features a newly designed custom output transformer resulting in a rich sound stage but with an authority that belies its 12Wpc.


  • Phono stage: Hi quality Phono stage for MM cartridges.
  • SPDIF inputs (Coax and Optical) Built around a AKM chip. 24 Bit 192KHz Hi Quality DAC for an extraordinary sound result.
  • USB: DAC on board 24bit for a extraordinary listening experience from computer’s file.
  • The Output transformer uses a Hi-Grade iron-Silicon for superb frequency reproduction & width. This newly designed custom output transformer. unique to the Soprano achieves a highly delicate & precise sound reproduction faithful to the original recording.
  • The power supply & output transformers are held by an extremely rigid structure that keeps the unit free from unwanted vibrations which further helps reduce unwanted noise to the tubes.
  • Gold plated professional binding posts along with Ceramic sockets for continued oxidization free connection, further improving sound refinement.


  • Power stage (1 ch): Matched pair EL84/6BQ5
  • Input: Hi Performance audio OP-AMP JRC4580
  • Driver (1 ch): Matched pair MJD340 (Designed for audio amplifier)
  • Output power (each ch): 12W A Class into 6ohm
  • Frequency response: 20Hz to 20KHz - 0,5dB
  • Power stage config.: Push-Pull Ultra Linear 43% tap configuration
  • Input impedance: 100Kohm
  • Sensitivity: 100mV for rated power
  • Distortion: 1% 25W 1KHz
  • Signal/Noise ratio: >90dB (A-weight)
  • Inputs: 1 Line, 1 Phono (MM 47Kohm)
  • Digital inputs: 1 Optical Toslink, 1 S/PDIF coaxial, 1 USB “B” type Windows / Mac / iOs / Android compatible
  • Max Resolution: 24Bit 192KHz
  • Power consumption: 80W max
  • Dimensions: (w,d,h) 310x295x150mm
  • Weight: 10 Kg
  • Remote control: Volume, inputs section