
Elite Series · 300B Monoblock Tube Amplifiers
Spirit 300B MK2
The 300B power triode has never been equaled for the unique sound characteristic it delivers. The Spirit is its pinnacle.
Studio photography in progress
Reference 300B single-ended triode monoblocks
Smooths edginess without losing detail
Plays as loud as a solid-state amp 5× its power
Hand-built to order in Texas
The Sound
The 300B power triode was first invented by Western Electric back in 1938 and has never been equaled for the unique sound it delivers. The Spirit is the pinnacle of 300B tube amplifiers.
A lot of the recordings we love are not always pleasing to the ear — a solo violin or electric guitar can be downright unpleasant at times. The Spirit smooths this edginess away without degrading the instrument or the recording in a way no digital processing can. And although 300B amplifiers are not known for raw power, the Spirit is a beast: it plays as loudly, without distortion, as a high-current solid-state amplifier 5× its rating.
Hand-built to order in Texas
Specifications
- Power Output
- 26 watts per amplifier
- Tube Type
- 300B power triode
- Configuration
- Monoblock — sold as a pair
- Inputs
- Balanced XLR + single-ended RCA
- Speaker Taps
- 4 Ω and 8 Ω
- Frequency Response
- 20 Hz – 20 kHz
- Recommended Sensitivity
- 84 dB+
- Dimensions (each)
- 11.5" W × 19.75" D × 9.5" H
- Weight (each)
- 68 lbs
- Origin
- Hand-built to order in the U.S.A.
“The realistically bold-sounding Raven Spirit Mk2 monoblock has earned its place among them.”
Questions & Answers
How can a 26-watt 300B amplifier sound powerful?+
300B amplifiers are prized for quality over raw wattage, but the Spirit's design lets it play as loudly without distortion as a high-current solid-state amplifier rated at 5× its power.
45-Day Risk-Free In-Home Trial
Hear it in your own room. Risk-free for 45 days.
We build every amplifier by hand and stand behind it completely. Audition a Raven in your own system — if it isn't the most musical thing you've ever heard, send it back.

