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 October 2012 (2)

    • Constantiu Soare
    • Bucharest, Romania
    • 29 October, 2012

    Hello Mark,

    Congratulations for your web site!
    After successfully building a DIY air bearing tonearm for my turntable, the next step was to build a decent power amplifier.
    Your Micro-Amp seemed to me the best choice. And indeed it was!
    I used your schematic (except the mute/thermal protection). For the power-on mute I used the simple circuit from the TI LM4780 data sheet which works fine.
    The amplifier worked fine from the first power-on attempt: no oscillation, no hum, just MUSIC


    • Laurence Gibbs
    • UK
    • 24 October, 2012

    Hi really enjoyed the info on the Musical Fidelity A1. I had one from new and had a diode in the bridge rec fail when it was a few years old. Can't remember what i replaced the diodes with now but it was for something a little better quality (i worked for the now defunct Mastercare as a TV & Radio engineer at the time, just out of my apprentiship). Sadly i sold the A1 (big mistake). So I keep looking for one on Ebay at "the right price".
    Thanks for the interesting read.