2sk400/2sj114 suitability

[RKH]

Can anyone comment on the subject mosfets for suitability in audio power amp applications?

Thanks,
Ryan

[jacco vermeulen]

Originally Posted by RKH

comment

Sure, Hitachi J114/K400 can and have been used for audio power amps.

Neither meat nor fish, they require a bias level that suits a vertical MOSFET but have similar low transconductance of a Lateral.
Means having to use a steep rail voltage and/or plenty of these devices in parallel.
OK in the old days, when vertical MOSFETs were less educated and a lot more expensive.
Nowadays you'd have to find 'm by the cheap for them to hold up against the steep vertical competition, i reckon.

Same goes for J118/K413 and J119/K414