Not everyone other knows about the existence of the official Western Electric® 300B ($50.000) 97-A monoblock tube power amplifiers. Eight 300B tubes per channel produces around 80 watts...
SPECIFICATIONS
RATED POWER OUTPUT
80 watts RMS per channel
INPUT SENSITIVITY
0.50 volts for full output
INPUT IMPEDANCE
500k ohms
FREQUENCY RESPONSE
+/- 1 dB from 10Hz to 100kHz
TOTAL HARMONIC DISTORTION
10 watts output: < 0.05%
50 watts output: < 0.15%
80 watts output: <.90%
SIGNAL-TO-NOISE RATIO
-100 dB below 80 watts
DAMPING FACTOR
16
POWER CONSUMPTION
400 watts (true RMS)
OUTPUT IMPEDANCE
4 / 8 ohms