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The Duelund-Corona 832A Project: Project primer & the Duelund CAST Air-Core Inductors!


Greetings friends, I hope you are well! 🙂 I'm in the "roll up your sleeves and get to work" phase for the Duelund-Corona 832A Project.  I'm also trying to be mindful of what I write as being a useful guide to the steps one goes through for building crossovers, so you can use what I... Read More »


The Duelund-Corona 832A Project: The resistance network!


Greetings friends, I hope you are well! 🙂 As a refresher, The Duelund-Corona 832A Project is about building new high-performance crossovers for my beloved vintage Altec 832A Corona loudspeakers (above) using the state-of-art Duelund CAST inductors and capacitors (below).  In particular, I'm building replacements for the stock Altec N800E crossover - or "dividing network" -... Read More »


Today's Fresh Catch: Capacitors & Inductors for the Duelund-Corona 832A Project!


It's exciting times here at my place with the arrival of the Duelund CAST pure copper capacitors and inductors for the Duelund-Corona 832A Project - woo hoo!  When the FedEx driver rang my doorbell yesterday, I knew I was in for a remarkable & exciting audio adventure when I saw the parcel from Frederik at... Read More »


Jeff Checking In: M8 RIAA phono pre & SN-8 SUT, Ortofon GTX S, Gold Note, Duelund, valve rectifiers, magic, and other stuff!


Greetings friends, I hope you are doing well. 🙂 I've really been enjoying my music & audio adventures. There's always a bit of serendipity at play in music & audio, and that always makes things more exciting!  I've really been enjoying my vintage-inspired office system lately (above). I have to pinch myself on occasion to... Read More »


Today's Fresh Catch: A vacuum tube rectifier adventure with Ookubo-san, Setsuko-san, and Yazaki-san! Part 1.


Rectifiers are the unheralded heroes of the vacuum tube world, and like Rodney Dangerfield, they get no respect - but they should. In a vacuum tube circuit, the power supply provides the necessary AC voltage from the mains. The rectifier then has the important role of converting that AC voltage into DC for the operation... Read More »


Today's Fresh Catch: Ortofon 100th Anniversary - A Century Of Accuracy In Sound!


Today's Fresh Catch is the history book about Ortofon - Ortofon 100th Anniversary, A Century Of Accuracy In Sound. A big "Thank you!" to Louis Dorio of Ortofon for sending me a copy to read. 🙂 I am both a bibliophile (lover of books) and a history buff. I enjoy reading about history in general, exploring... Read More »


Jeff Checking In: Audio Note (UK) M8 RIAA & AN-S8, Duelund-Corona Project, Ortofon GTX S, and other stuff!


Greetings friends, I hope you are well. 🙂 I've really felt the thrill and satisfaction of adventure and discovery in my audio hobby this year. Listening to vinyl through the Audio Note (UK) M8 RIAA phono preamplifier & AN-S8L SUT Level Five combination has been thrilling and rewarding to experience. This M8/S8L combo has made... Read More »


The New Ortofon SPU GTX S moving-coil phonograph cartridge - a nuevo classic!


I've really been enjoying listening to the new Ortofon SPU GTX S moving-coil phonograph cartridge in my vintage inspired audio system, with my classic Thorens TD-124 that was restored by Artisan Fidelity serving as the source, and my vintage custom Altec loudspeakers that were once owned by Leopold Stokowski, providing me with soul-stirring sound.  It's... Read More »


Audio Note (UK): M8 RIAA & M6 RIAA phono preamplifiers photographic "walk-through"!


Greetings friends, I hope you are well! 🙂 It's been a real pleasure to explore and tell you about the performance "Levels" of Audio Note (UK) hi-fi kit, so a big "Thank you!" to Peter Qvortrup for making this review series possible. To orient those of you who are new to this review series, the... Read More »


Listening: The new Verve 4 LP box set reissue of Billie Holiday's "The Complete Decca Recordings" - treasure alert!


We're living in a time when many of the original recordings of the great musical performances recorded during the acoustic & electric eras of the recording arts are deteriorating and disappearing from Planet Earth. Once they are gone, they are gone forever. For yours truly, this is a tragedy comparable to losing the many great... Read More »


Today's Fresh Catch: The New Ortofon SPU GTX S moving-coil phonograph cartridge!


I am particularly excited about the arrival of the Ortofon SPU GTX S moving-coil phonograph cartridge, so a big "Thank you!" to Louis Dorio (Ortofon) for sending me one to tell you about here at Jeff's Place and Positive Feedback.   When I first saw the press release about the innovative SPU GTX S cartridge... Read More »


Listening: The Audio Note (UK) M8 RIAA phono pre & AN-S8L SUT!


I've been going through the bedding-in process for the Audio Note (UK) M8 RIAA phono preamplifier and the AN-S8L step-up transformer (SUT) since its arrival about 3 weeks ago (HERE).  Per the Audio Note (UK) owner's manual for the M8 RIAA (HERE), "The M8 RIAA phono stage requires around 100 hours of initial use (called “bedding... Read More »


Jeff Checking In: Audio Note (UK) M8 RIAA & AN-S8L SUT, music, and a couple of upcoming surprises!


Greetings friends, I hope you are well! 🙂 All is well here with me, and I've been having a ball playing music & hifi games.  As I mentioned in my Today's Fresh Catch post (HERE), I've got the "Level Five" Audio Note (UK) M8 RIAA phono preamplifier and AN-S8L step-up transformer installed into the main music system... Read More »


Today's Fresh Catch: The Audio Note (UK) M8 RIAA phono preamplifier and AN-S8L step-up transformer!


Greetings friends, I hope you are well! 🙂 In case you are new to the ongoing review series I have been writing about Audio Note (UK) audio components here at Jeff's Place and Positive Feedback, let me catch you up.  Audio Note (UK) is located in Sussex, England, and has been manufacturing high-performance vacuum tube... Read More »


The da Vinci Files: Bruce Berman's 2-Stage 45/WE-300B SET DHT amplifier design and much more!


During the High Renaissance, Leonardo da Vinci was an Italian polymath who was a talented architect, draughtsman, engineer, painter, scientist, sculptor, and theorist. da Vinci's imagination, skills, intelligence, and insights still make him household name today, over 500 years after his death. Every once in a while I run across someone who has done something... Read More »


Listening adventures with Chet Baker, Joe Pass, Diana Krall, and David Gitlen!


Greetings friends, I hope you are well. It's always a pleasure to meet up with my talented jazz guitarist friend, David Gitlen. This morning we went out for a nice breakfast (Thanks, David!), and afterwards came by my place for some jazz listening adventures. Joe Pass: Virtuoso and For Django I wish you could all... Read More »


A new audio DIY project announcement: The Duelund-Corona 832A Project!


I get all giddy thinking about DIY audio projects, and particularly when they involve Frederik Carøe (Duelund Coherent Audio).  If you read my recent State Of The Systems Report: Audio Nirvana! Part 1, and State Of The Systems Report: Office Nirvana! Part 2, you noticed that both those loudspeaker systems - Tannoy Westminster Royal SEs... Read More »


State Of The Systems Report: Audio-Visual Nirvana! Part 3.


Greeting friends, I hope you are doing well. 🙂 This is Part 3 of my "State Of The Systems Report", where I thought I'd update you about how each of the three audio systems that I have up and running are doing, as they have been in a relatively stable configuration for a while now. ... Read More »


State Of The Systems Report: Office Nirvana! Part 2.


Greeting friends, I hope you are doing well. 🙂 This is Part 2 of my "State Of The Systems Report", where I thought I'd update you about how each of the three audio systems that I have up and running are doing, as they have been in a relatively stable configuration for a while now. ... Read More »


State Of The Systems Report: Audio Nirvana! Part 1.


Greeting friends, I hope you are doing well. 🙂 It's been a rough go for me to start the year. I managed to catch some illnesses in series that have laid me flat for almost 9 weeks now. Ugh. The silver lining during all that time has been how grateful I have felt for the... Read More »


Music on LP: Richard Wagner, Gil Evans, drama, emotions, and other stuff!


As I mentioned in my last post (HERE), I've been into spinning a lot of vinyl the last few weeks. There's so much good new & used vinyl to be had these days, it's been a real treat to add records to my vinyl library.  I've been exploring the vinyl via a signal path of... Read More »


The high-fidelity of feelings in audio. What?


Greetings friends, I hope you are well! 🙂 I've really been into spinning vinyl the last few weeks. There's so much good new & used vinyl to be had these days, it's been a real treat to add records to my vinyl library.  The fidelity of feelings. While spinning said vinyl I've been pondering what... Read More »


Checking In: Vacuum tubes. A Vinyl Afternoon. Ruby Mica Capacitors. Drama.


Greetings from the cold Pacific Northwest. Snow today! I hope you are well. 🙂 Tone Poets The vacuum tubes are full of fire on a cold winter day, and I've been spending the afternoon listening mostly to vinyl with the Tone Poets. I really have to hand it to Blue Note President Don Was, and... Read More »