Spirit 300b MK2

Monoblock Amplifier (Built to order)

The pinnacle of 300b tube amplification.

$26,995.00

Spirit 300b MK2

Monoblock Amplifier (Built to order)

The pinnacle of 300b tube amplification.

$26,995.00

"Klaus Voorman's bass in "Well Well Well" sounded monstrously good"

~ Art Dudley - Stereophile Magazine


"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."

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The Spirit Character

The 300b power triode 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.

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.

Proprietary audio/power transformers

One important aspect of driving speaker with authority from a 300b tube based amplifier is the power supply. Raven's unique custom power supply and audio output transformers combine with the rest of the amp's design to create a truly uniquely powerful 300b amplifier.

Proprietary Capacitors

Capacitors have a significant impact on the sound of an amplifier. On tube amplifiers they are critical. This is why we manufacture our own capacitors. They are a cost-no-object design and are born out of our Elite series amplifiers engineering efforts.

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.


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.


Proprietary audio/power transformers

One important aspect of driving speaker with authority from a 300b tube based amplifier is the power supply. Raven's unique custom power supply and audio output transformers combine with the rest of the amp's design to create a truly uniquely powerful 300b amplifier.


Proprietary Capacitors

Capacitors have a significant impact on the sound of an amplifier. On tube amplifiers they are critical. This is why we manufacture our own capacitors. They are a cost-no-object design and are born out of our Elite series amplifiers engineering efforts.


Build Quality

The Elite Series chassis are machined-from-solid-billet aerospace aluminum plates with solid-bronze corner posts.  Construction is maintained with high-grade stainless-steel screws throughout. The adjustable chrome-plated stainless steel ball footers insulate and isolate the amplifiers and tubes for a better sonic response which is freer of conductive resonances, also good for avoiding scratches on your furniture. 


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

Build Quality

The Elite Series chassis are machined-from-solid-billet aerospace aluminum plates with solid-bronze corner posts.  Construction is maintained with high-grade stainless-steel screws throughout. The adjustable chrome-plated stainless steel ball footers insulate and isolate the amplifiers and tubes for a better sonic response which is freer of conductive resonances, also good for avoiding scratches on your furniture. 

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