OT: Elektor audio

[Edu Silva]

Hi, DIYer's!

Sorry for this off-topic, but as we're speaking a lot about audio stuff
lately...

I've found these two books from Elektor (avaliable by mail order), but
before buying, It'd be nice to hear one or two opinions from one who
knows them. Someone?

BUILD YOUR OWN HIGH-END AUDIO EQUIPMENT
ISBN: 0-90570-540-8   1st edition / 1995     

BUILD YOUR OWN AUDIO VALVE AMPLIFIERS
ISBN: 0-90570-539-4   1st edition / 1995     

Edu Silva // ES2 Audio