Raven Audio Spirit 300b MK2 Monoblock Amplifier


The 300b power triode was first invented by Western Electric back in 1938 and has never been equaled for the unique sound characteristic it delivers. The Spirit is the pinnacle of 300B tube amplifiers. A lot of the recording we like to listen to are not always pleasing to the ear. A solo violin or electric guitar can be downright unpleasant at times. The Spirit smoothes this edginess away without degrading the sound of the instrument or the recording in a way that no digital processing or remastering can. Although 300B amplifiers are not known for raw power, the Spirit is a beast. It can play as loudly without distortion as high current solid state amplifier 5X its power rating.

Hand-Made in America

Hand wired point to point and therefore 100% upgradeable forever. The Raven Audio Elite Series is made with highest quality parts like Raven Capacitors, V-Cap, Mundorf, MIT-RTX capacitors and Raven transformers allied with classic tubes like Telefunkens, Valvo, Tung Sol, Seimens, Amprex, Sylvania, RCA, Philips, GE, National, KenRad and Tungsram.

Proprietary output/power transformers

Because output and power transformers are essential to the Elite series sound, we've designed custom wound transformers for both electrical power and audio output. Our proprietary transformers are designed to the highest specifications, are built in the U.S.A. and crafted to last a lifetime.

Audiophile Connectors

All of our Elite Series has audiophile grade RCA connectors. They are made of 99.95 percent oxygen-free copper and are gold plated. Each heavy duty connector is individually hand soldered to oxygen free copper wire.

The speaker binding post are also 99.95 percent oxygen-free copper with gold plating. They accept banana, spade, and bare wire as large as 8 gauge.

Features and Specifications

  • Output: 26 watts per amp
  • Frequency response: 20Hz - 20kHz
  • Input terminals: Balanced XLR and single-ended RCA
  • Speaker terminals: 4 and 8 ohm
  • Recommended speaker sensitivity: 84dB  and above
  • Dimensions: W 11.5" x D 19.75" x H 9.5"
  • Weight: 68lbs

"I'm one of those listeners who believe there exist, among amplifiers, many different paths to glory—yet who has a special place in his heart for low-power, push-pull tube amps, especially monoblocks.

A number of such models have impressed me over the years, and the realistically bold-sounding Raven Spirit Mk2 Monoblock has earned its place among them."

~ Art Dudley - Stereophile Magazine

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