The SE300B supplies a power of 10W RMS and functions in pure class-A with single-ended mounting (the two tubes are in parallel) with an automatic bias. The two high voltages, driver and power, have vacuum-tube power supplies. The bandwidth (at –3dB) is from 20Hz to 20kHz, without any feedback. The driver stage, powered at 400V, is built around a double-triode 6SN7. The two elements of the tube are mounted in cascade. The output stage is powered at 320V, which allows the tubes to work in the best conditions.
There is one thing that generally speaking, 300B-based amplifiers do so well: they breathe life into the music. But the Jadis amplifiers breathe more than life into the music; they impart light as well. This is how I would define ultimate transparency
– Jonathan Scull Sam Tellig