Several designs in our product range require matched transistor pairs for optimum performance.
Devices used in our products:-
Suitable thru-holes devices include: 2SC3381, 2SC1583, MAT-02, LM394, SSM2210, THAT3xx, however some of these devices are now hard to source.
It is also possible in some situations to use your own hand-matched devices. When doing so, you should use high-gain, low-noise audio transistors and achieve a Vbe matching within at least 2mV and, ideally, 0.2mV.