A m p l i f i c a t i o n
Tube configuration
Pre amp tubes
The Stage 20 has 2 x JJ ECC83 (12AX7) pre amp tubes, and 1 x ECC803 tube as the phase splitter.
The ECC803 is a "long plate" version of the ECC83, and in this position it provides a stronger, more detailed
and more controlled bass response.
Power tubes
The Stage 20 Triple has a pair of fixed-bias 6L6GC power tubes, with a power output of 20 Watts RMS.
We use the traditional method of measuring power output, measuring maximum clean signal at the speaker.
Tube replacement
Depending on how frequently and how loud the amplifier is played, tube life can vary greatly. Generally, pre amp tubes
last for many many years, although it is recommended to replace them once every 4 years, or as soon as a drop in
performance is noted.
Power tubes normally require replacement every year, or as soon as a drop in performance is noted. The power tubes
must always be replaced with a matched pair, and the bias must be set each time by a qualified technician.
Tube configuration
ECC83
ECC83
ECC803
6L6GC
6L6GC
