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Yazaki-san's Ultimate Ruby Mica Capacitor Mod for the SPEC RSA-M3 EX Real Sound Amplifier! Part 3.


It's taken me much longer to try the next level of Yazaki-san's Ultimate Ruby Mica capacitor mod for the SPEC RSA-M3 EX Real Sound Amplifier than I had anticipated, due to the arrival of the Covid-19 pandemic, and its impacts on my life and health. You can read my original SPEC RSA-M3 EX Real Sound... Read More »


Yazaki-san: "Stereo Sound" Altec issue and Ultimate Ruby Mica Capacitors!


It's always exciting to hear from our friend Yazaki-san, and this time Yazaki-san really outdid himself! You all know how much I love my humble vintage Altec loudspeaker collection of the A5 Voice of the Theatre, Corona 832A, and the "Stokowski" Altec's. Well, our friend Yazaki-san sent me a special issue of Stereo Sound from 2006 that... Read More »


Yazaki-san's Ultimate Ruby Mica Capacitor Mod for the SPEC RSA-M3 EX Real Sound Amplifier! Part 2.


I got a chance to do a little A-B listening evaluation of Yazaki-san's Ultimate Ruby Mica capacitor mod for the SPEC RSA-M3 EX Real Sound Amplifier, with the added bonus of a group of friends weighing in on the results. As you might remember from Part 1, Yazaki-san had sent me a pair of his... Read More »


Jeff checking in ... Audio Note UK, Duelund, GPA, Guitars, Leben, Music, Pass Labs, and Spec!


It is Thanksgiving week here in the States, and its a good time to reflect upon what we are thankful for. I'm looking forward to spending Thanksgiving Day with my 94 year old Mom, and hanging out with my friends Chad, Leo, Ron, and Santos for a little hifi fun & games and some general... Read More »


Today's Fresh Catch: Yazaki-san's Ultimate Ruby Mica Capacitor Mod for the SPEC RSA-M3 EX Real Sound Amplifier! Part 1.


Today's Fresh Catch is the pair of Ultimate Ruby Mica capacitor's Yazaki-san sent me to try as a mod for the SPEC RSA-M3 EX Real Sound Amplifier. If you read Yazaki-san's article, “My Adventure With My Old Marantz Model 7 Part 8" HERE, you know Yazaki-san was so impressed with the Ultimate Ruby Mica Capacitor's performance... Read More »


Jeff checking in ... Acoustic Revive, Belden 8402, Collings, Fender, Soundsmith, Spec, Still Audio, and Waterloo!


I had lunch with my good friend, Santos Ortega, on Friday. It's always a pleasure to get together with Santos, who is one of the most interesting, insightful, and decent guys I've ever had the pleasure to meet, not to mention that he has impeccably good taste in all things!  I've known Santos for nearly... Read More »


Long-term report on the Spec RSA-M3 EX and Leben CS-600 integrated amplifiers!


I'm a huge fan of integrated amplifiers. In fact some of the finest amplification I've ever had the pleasure to listen to music with has come from integrated amplifiers, like the Leben CS-600 and the Spec RSA-M3 EX. I get quite a few messages from integrated amplifier owners asking me what separate components would better the... Read More »


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