Economy Mullard 3-3 stereo amp.

[Murphyv310]

       
Hi.
I've been adding some refinements.
A headphone socket has been fitted along with a suitable attenuating network and some top end frequency lift for my failing hearing, this network is in circuit all the time but a change over switch is added to switch off the speakers and add dummy loading for the output.
A mono stereo switch has also been added.
There is a slight amount of hum detected on headphone but it is leakage from the mains transformer to the outputs more so on the left channel. Perhaps a different orientation of the mains transformer would help or even a drop through type.
Next is to make a template for a facia panel and make one up.