Welcome to my guestbook, where you can see what previous visitors think about this site and my projects and articles. Many thanks to everyone who has left messages - your feedback really is appreciated!

Guestbook entries from 2020 (4)

    • David
    • Wakefield
    • 5 June, 2020

    just thought I'd have a look at your website and then spent a couple of enjoyable hours going through it! I particularly enjoyed reading about your Hacker volume control repairs and your NICAM decoder project!

    • Steve Faulkner
    • Kansas City, USA
    • 28 May, 2020

    Mark, thanks much for this site. It's tough to find much technical info on these old amps, much less anything so well done. I've got an A100 that I purchased in 1987. It hasn't seen much use since the late 90's, but still runs like a champ. I'm going to spend some time over the next few months updating it, and the info you've provided will be more helpful in that effort than anything else I've found...and infinitely better than what Musical Fidelity was willing to provide (that is, zero).

    • Al Davies
    • Glasgow, UK
    • 15 May, 2020

    As a beginner in electronics I found your site very useful. I'll be delving into op-amp cicuits soon so every little bit of knowledge is a good thing. Thank you.

    • Hector Plain
    • England
    • 17 January, 2020

    What a superb site. I stumbled on this whilst looking for info on my beloved Hacker RP25. Mark I think you would make a smashing teacher or author of technical books. The ability to convey intricate detail whilst maintaining interest is a rare skill indeed and you have mastered it.

    The writing style reminds me of my favourite electronics book, Principals of Electronics by Colin Simpson, no big words or anything too clever just important information delivered in a digestible manner.