Concerto II

Concerto has always been an outstanding amplifier. But when we reintroduced Concerto II in 2002, we did so with a single goal in mind: taking the power and performance of the original and pushing it to a whole new level. Enter Concerto II: an amplifier created for listeners who crave power, yet demand the purity and transparency that characterize classic single-ended design. Listeners who seek a rich, real harmonic structure balanced by a more natural bass decay. Listeners who are passionate about percussion, and demand an amplifier that will capture bold, boundless percussive energy each and every time they take a favorite album or CD for a whirl. In short, Concerto II is a push-pull amplifier that provides single-ended sound at a truly surprising price point. What's more, Concerto II offers maximum flexibility by allowing our listeners to use their choice of three different output tubes -- without having to adjust bias.

  • Low-level 1.5dB. of feedback
  • Self-biasing circuits (one per channel)
  • Flexibility of three different output tube choices
  • Output transformers are 100-watt devices fitted with grain-oriented laminations
  • High quality mil-spec, multi-layered 2-oz. copper trace circuit boards
  • Capacitors are low ESR/ESL types for increased high- frequency performance
  • Satin-black chassis with chrome accents (optionally finished with a polished, non magnetic stainless steel chassis, chrome-plated transformer caps and nameplate

  • Type: Push-pull, transformer-coupled, pure class A, parallel output, low-feedback, ultralinear stereo amplifier
  • Output Power: 40-48 wpc
  • Input Sensitivity:
    • Direct Drive stage 700mV (U.S. only)
    • Cascode front end stage 400mV
  • Input Impedance: 470K ohms
  • Output Impedance: 4 and 8 ohms
  • Frequency Response: 20Hz to 60kHz ± 0.3dB.
  • Tube Complement: 4 x 6550, KT88 or KT90, 2 x 12AU7, 2 x 6DJ8
  • Dimensions: 18.25" x 13.75" (incl. heat sinks & terminals) x 10" [ W x D x H ]
  • Weight: 60 lbs.