Just got my copy, thought I would share incase anyone else is interested. Designing tube preamps for guitar and bass is now out of print and being sold for way too much.
Looks like a lot of repeated material from previous books but compiled into one volume specific to guitar amps. https://valvewizard.co.uk/book5.html 10% off lulu discount code: BOOKGROWTH10
new Merlin book
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