The Trimodal Power Amplifier: 2.0
The Trimodal amplifier is a unique design that is instantly switchable between Class-A and Class-B. There are no compromises of any kind in either mode.
The Trimodal PCB has now been updated so that the latest MT-200 package output transistors can be used. The supply-rejection has been improved so that power supply reservoir capacitors of 10,000uF can be used if required, rather than the 20,000uF originally recommended. The noise performance has been improved, and there have been many other minor improvements.
PCB 002: £28:50 each
P C B
This graph shows the amplifier THD when running from the minimum supply rails. The distortion performance at higher supply rails is slightly improved.
Measurement system: Audio Precision SYS-2702
Measurement bandwidth: 80 kHz, RMS sensing.