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A Guest Article from Mr. Shirokazu Yazaki: “My Adventure With My Old Marantz Model 7” Part 3.


It is my great pleasure to bring you the third post for the article that Yazaki-san is writing for us, “My Adventure With My Old Marantz Model 7”. Many thanks to Yazaki-san for taking time to write this article and share his wisdom with us, it is very much appreciated by me, as well as all... Read More »


Duelund DCA12GA Tinned-Copper Speaker Cable Listening Impressions after 4 Days on the Cooker!


In my first post about my very preliminary first listening impressions of the Duelund DCA12GA tinned-copper tone wire speaker cables, that I had just cut cold off the roll, I told you how the DCA12GA as speaker cables on my Westminster's were warmer & richer sounding than the my usual bi-wire Duelund DCA16GA/DA20GA speaker cables, which I... Read More »


A Guest Article from Mr. Shirokazu Yazaki: “My Adventure With My Old Marantz Model 7” Part 2.


In my earlier blog post I introduced Mr. Shirokazu Yazaki to those of  you who are new to Jeff's Place, and for the rest of you Yazaki-san needs no introduction, as you have been following the illuminating audio adventures with Yazaki-san for quite some time now. I met Yazaki-san back in early 2015 while I was preparing the article about... Read More »


Today's Fresh Catch: The Duelund DCA12GA Tinned-Copper Tone Wire!


A care package of Duelund DCA12GA tinned-copper tone wire arrived from Frederik today! Woo hoo! I've really been looking forward to giving the new Duelund DCA12GA a listen after reading all of your positive comments about it!   As a reminder from the breaking news post announcing the new DCA12GA, it uses 65 strands of 0.25mm tinned-copper... Read More »


Robbie's Leben Lid Mod!


As most of you know, I've been a long-time fan of the Leben CS600 integrated amplifier, for it's rugged & reliable build quality, it's superb appearance, its great sound & musicality, and its flexibility in accommodating a lot of different power output types for tube swapping entertainment. The only nit I have to pick with... Read More »


Now Live at Positive Feedback - Lefson: French High-End Analog Audio Devices - The Lefson Resistor Review!


The Lefson resistor review has just gone live at Positive Feedback! You can read the review here. As always, thanks for stopping by, and may the tone be with you!


Jeff checking in ... Lefson review is done, Duelund DCA20GA, and a look forward through the crystal ball!


It has been a busy audio weekend, and I'm trying to get caught back up after Jeff's Place going down due to the hacking event last week. The good news is that you've encouraged me to keep going with Jeff's Place for the foreseeable future. I was pretty discouraged after the hacking event, but with all... Read More »


Sneak Peek: The Lefson Analog Devices Resistor Review for Positive Feedback!


I'm hard at work this weekend writing up the Lefson resistor review for Positive Feedback.  I hope to get the review all finished up and published in the next week or two. Here's a little sneak peek until then! Enjoy! Lefson: French High-End Analog Audio Devices - The Lefson Resistor By Jeff Day I have been... Read More »


A Shielded Duelund DCA20GA Interconnect for the Weekend! Updates!


I've been wanting to try the Duelund DCA20GA tinned-copper tone-wire as a shielded interconnect between my Intact Audio SUT and vintage McIntosh MX110Z tuner-preamplifier for a while now. As most of you know, response to the Duelund DCA20GA as interconnects has been extremely positive, and I really like the ones I made up a lot (below).... Read More »


Jeff Checking in: Lefson, Duelund, Sumile, and the Altec A5 Voice of the Theatre Project!


This morning I'm writing the introductory part of the Lefson resistor article for Positive Feedback while listening to music, with plans to write up listening impressions on how the Lefson resistors performed in my Altec A7 Voice of the Theatre project crossovers tomorrow, and hopefully write a summary & conclusions section before the end of the weekend. I hope... Read More »


A Complete Duelund DCA Rewire of the Westminster Royal SE's Crossovers!


Yesterday after I rewired the high-frequency circuits of my Westminster's Duelund CAST crossovers with the Duelund DCA20GA tinned-copper tone wire, I was so excited by the results that I decided I wanted to rewire the low-frequency circuits too. It was spur of the moment decision to rewire my crossovers, so I didn't precondition any of the... Read More »


The Lefson Resistors from France - Update!


This is the fifth post I've written about the Lefson resistors that are manufactured by Xavier Lefebvre in Wormhout, France. Let me summarize what I've written about Lefson until now: In my first post I introduced the three product lines of carbon/silver audio resistors that are available from Lefson, the Premium, the Supra, and Ultra. The Premium resistor from Lefson is... Read More »


A look into the future through the audio crystal ball! Part 3 – Yazaki-san and Western Electric & Vintage McIntosh!


As I posted earlier, I'm really looking forward to trying friend Yazaki-san's ideas for modifying my vintage McIntosh MC30 monaural amplifiers. It's always fun doing audio adventures with Yazaki-san, as his insight, knowledge, and experience have really changed the way I think about audio performance, and for voicing my system at the 'DNA level' using resistors,... Read More »


A look into the future through the audio crystal ball! Part 2 – Lefson!


As I mentioned in Part 1 of this post, there’s so many good audio things happening right now I thought I’d better write a quick survey for you about all the things that are in play, culminating with my ‘roadmap’ for writing about it all in the near future. ¸¸.•*¨*•♫♪¸¸.•*¨*•♫♪¸¸.•*¨*•♫♪ I introduced Xavier Lefebvre and Lefson Analog... Read More »


A Saturday Morning 100R Lefson Supra R4 Adventure, and More 10R Lefson Premium R5 Impressions!


What do you do when you wake up at 2:30 a.m. with your mind working overtime about all the possibilities in life? My approach this morning was to fire up the espresso machine, have a double shot, and then continue with the Lefson resistor adventure! I listened again this morning to the 10R Lefson Premium silver/carbon resistor in... Read More »


Lefson High-End Analog Audio Devices from France: A Lefson Resistor Adventure!


If you read my previous Lefson post about the Lefson resistors provided to me by Xavier Lefebvre, who owns and operates Lefson, you know that I am gearing up to write about the three lines of custom and hand-crafted Lefson resistors for Positive Feedback. I asked Xavier if he would tell us a little bit about himself... Read More »


Some more Duelund tinned-copper tone-wire news!


First off I want to give a shout out to one of my audio heroes, Jim Smith, who gave Jeff's Place and Duelund DCA16GA a mention on his blog, Get Better Sound, is this issue of his Quarter Notes news letter: "Jeff Day is a trouble-maker! He keeps finding things that I have to try.... Read More »


I've got some Duelund tinned-copper tone-wire news!


I've got good news! I just heard from Chris at Parts ConneXion and he told me that he's now stocking the Switchcraft 3502AAU RCA plugs at the same price as Mouser ($3.99 USD each) to offer an affordable alternative for those wanting to build DIY interconnect needs. I also just heard from Frederik Carøe at... Read More »


Lefson French High-End Analog Audio Devices: The Lefson Resistor!


I received a message from Dr. David Robinson, Managing Editor of Positive Feedback, asking me if I could write about the three new ranges of carbon/silver audio resistors from Lefson in Wormhout, France, and he put me in touch with owner Xavier Lefebvre so we could talk about the possibilities. Lefson makes an impressive array of high-performance... Read More »


Coming Up: Duelund & Belden Tinned-Copper Interconnect & Speaker Cable Listening Impressions! Update 1.


This weekend I'm hoping to get in some more listening time with the various wire adventures I've got cooking, so hopefully I can share some more listening impressions with you before too long. It's already shaping up to be a busy weekend, but hopefully I'll be able to get some writing in for you. Keep checking in on... Read More »


A New Adventure With Yazaki-san! Update #2.


It's always wonderful to hear from Yazaki-san, and he's always got some great ideas for audio adventures! A week or so ago Yazaki-san told me: Dear Jeff-san, I have a plan to send you a pair of resistors and also a pair of reproduction WE18GA wire for power cables. The resistors are prepared for the... Read More »


First Listen: The Duelund Coherent Audio DCA20GA tinned-copper tone-wire adventure begins!


I made up pairs of 2-meter interconnects with the new Duelund Coherent Audio DCA20GA tinned-copper tone-wire with my favorite affordable RCA’s, the Switchcraft 3502AAU RCA’s, soldered together with Kester '44' rosin core. I made up two pairs of 2-meter interconnects with the DCA20GA, the first with pair single runs of Duelund DCA20GA pin-to-pin and ground-to-ground, and a second... Read More »


Breaking News: The Duelund Coherent Audio DCA20GA Tinned-Copper Tone-Wire has arrived! Update.


It's always an exciting day here at Jeff's Place when something arrives from Frederik Carøe at Duelund Coherent Audio in Denmark, and in today's case it is the arrival of the hotly anticipated Duelund Coherent Audio DCA20GA tinned-copper tone-wire! For those of you who haven't been following the developing story of tinned-copper tone-wire, let me fill you... Read More »


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