Spirit MK2 Stereo Amplifier

Spirit MK2 Stereo Amplifier

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Spirit 300B Reference Stereo Amplifier

Stereo two-channel amplifiers are still the most popular and convenient configuration in high-end audio and are most often placed between the speakers. Raven Audio’s handsome and well-appointed 14-tube Spirit 300B Reference Stereo Amplifier delivers a robust 28wpc from a quartet of 300Bs.

The Spirit 300B Reference stereo chassis is machined-from-solid-billet aluminum with solid-bronze corner posts, brass trim and stainless-steel screws. Chrome ball footers isolate the amplifiers and tubes for better sound while avoiding scratches on your fine furniture.

The Spirit 300B is all hand-wired point-to-point with silver-plated PTFE-coated conductors. Raven uses three types of solder and a 99.999% pure-copper buss bar in the pursuit of ultimate sound. Raven Audio customers can choose contemporary 300Bs or NOS (New Old Stock) if available. All Raven Audio amplifiers are auto-biased; you never have to adjust tubes for a perfect match.

Raven Audio tube components bring the added dimensions of emotion and excitement, a nearness to the music that makes everything breathtakingly real. The clarity, air, soundstaging, sheer palpability and smooth frequency response allows listeners to easily suspend disbelief and fall into the music in a completely visceral way.

We understand, the richness, the closeness, the musicality of tube components is totally captivating, and Raven Audio built the Spirit 300B Reference Stereo Amplifier to give the tube aficionado an elegant amplifier with the special transparency and inner-light that only 300Bs can produce.

Besides sounding wonderful, Raven Audio products have a sumptuous look and feel.

Features and Specifications

  • Output: 28wpc
  • Frequency response: 20Hz ~ 20kHz
  • Input terminals: Balanced XLR and single-ended RCA
  • Speaker terminals: 4 and 8 ohm
  • Recommended speaker sensitivity: 90dB - 96dB
  • Dimensions: W 19.5" x D 13.5" x H 9.5" (or) H 10.5" (with 300B tubes installed)
  • Weight: 64lbs

Tube Complement

  • 4 x 12J5 - First stage amplification and phase inverter
  • 2 x 12SN7 - Driver tube
  • 2 x 12SN7 - Cathode follower
  • 2 x 12SN7 - Auto biasing
  • 4 x 300B - Power tubes
  • Power tubes auto bias featuring an interstage transformer