I have old version of stereo valve amplifier (product K4040) and there is no problem with it. I see, that you improved design of this product.
Is it possible to get somewhere those chrome rings for valves, which are around valve on housing? On my version of amplifier is a hole between valve and metal housing.
Thanks,
Tomaž
Normally, these items are not sold separately.
All will depend on the willingness of your Velleman distributor.
They will have to special order for you, as our distributors do not stock these items.
You will need 8x Velleman part# CKRING47 and 2x Velleman part# CKRING35.
Please turn to your distributor for availability and pricing, as we do not sell direct.