It was a really enjoyable Friday this week, with a splendid visit from Paul James, who came all the way from Australia to visit Jeff's Place. Paul is a super nice guy, as well as a really knowledgable audio guy who likes to build valve preamps &  amplifiers, and loudspeakers from scratch, and it was... Read More »

Vintage audio equipment can be a lot of fun because of its superb musicality, but at some point that vintage kit will need updating and/or repair to replace aging capacitors, resistors, and potentiometers, for example. Take for example my vintage McIntosh MX110Z, that has had an enduring presence in my audio systems due to its... Read More »

I've been agonizing about whether to do it or not, but I've decided to put my vintage McIntosh MC225 and vintage McIntosh MC240 stereo power amplifiers up for sale, as they're not seeing much use of late. I hate to leave such wonderful vintage McIntosh amplifiers sitting around when they could be making beautiful music... Read More »

I decided to bite the bullet and order two matched pairs of the increasingly rare & expensive NOS GE 6L6GC's for my vintage MC30 monaural amps, so I could compare the fresh new GE's to the new production Tung-Sol 6L6GC STR's. I have found certain aspects of the Tung-Sol's musical & sonic performance to be... Read More »

A Merry Christmas and Happy Holidays to all! The snow is really coming down right now, so it's a classic White Christmas here in Washington State. I'm bringing my Mom over to share Christmas with, have a nice Christmas dinner together, sip a hot toddy, and listen to some jazz! For me it's not only... Read More »

I have access to buying almost anything as an audio writer, and there's some really nice audio gear out there, but for a preamplifier I chose the vintage McIntosh MX110Z tuner-preamplifier, which was sold by McIntosh from 1962-1969 for the lofty price of $399. The reason is that the vintage McIntosh MX110Z tuner-preamplifier is an... Read More »

It's bright and early on Saturday morning and I'm up drinking espresso, as my custom is lately, starting my mornings with two café allongés to get the morning rolling. It works! My primary music system has achieved such a nice overall balance musically & sonically of late that I'm just sitting back, settling in, and enjoying the fruits of... Read More »

I've got today off from work so I'm playing hi-fi games with my Altec A5 Voice of the Theatre project loudspeakers, and I have a ton of fun things to tell you about! Facebook also informed me that today is my one-year anniversary of starting my Altec A5 Voice of the Theatre project, and guess what,... Read More »

Those of you have been reading along know that Frederik Carøe of Duelund Coherent Audio really wowed me (and many of you) with the debut of his impressive Duelund DCA16GA tinned-copper ‘tone wire’ that is an affordable musical marvel. Then hot on the heels of the DCA16GA, Frederik sent me some 0.22uF/400V Duelund CAST tinned-copper prototype electronics capacitors... Read More »

In 2015 I started what is intended to be the start of a new tradition for me, called the Jeff Awards, which are intended to recognize the most momentous events of musical & audio significance that happened here at Jeff's Place during the year. The Jeff Awards can include hi-fi equipment from my Positive Feedback articles, or honorable mentions... Read More »

I got up this morning and drank an adequate amount of coffee to wash down a slice of Thanksgiving's leftover pumpkin pie for breakfast, while listening to Jazz24 on the Stokowski A7 Voice of the Theatre loudspeakers. Yazaki-san’s superb SPEC RSA-M3 EX Real Sound Amplifier is a perfect match to my Stokowski A7's, giving a musical... Read More »

Man, I love my vintage McIntosh MX110Z tuner-preamplifier, but lately the main volume control has become noisy, as have the little volume pots on the phono & auxiliary inputs. I had been dragging my feet on doing the needed maintenance, but when I watched the Care & Cleaning Of Vacuum Tube Audio Amplifiers & Amateur Radio... Read More »

It's been a crazy busy time for yours truly, with travel, work, looking after my 91-year young Mom, getting ready for some memorial services for my Dad, keeping up here at Jeff's Place, and the like. Sometimes 24 hours in a day seems woefully insufficient. But I wanted to check in and say, "Hi!" and... Read More »

I had intended to spend quite a lot more time listening to the gorgeous sounding vintage Sprague Bumblebee 0.22uF capacitors in the C93 & C95 and C94 & C96 positions of my MX110Z to establish a 'baseline' before trying any more capacitors. The Bumblebee's are my favorites of all the capacitors I've tried in those positions for the MX110Z... Read More »

I have really been having a lot of fun listening to various capacitors in my vintage McIntosh MX110Z tuner-preamplifier. At the moment the vintage Sprague Bumblebees are at the top of my list for capacitors in the C93 & C95 and C94 & C96 positions for my MX110Z for their sheer musical prowess. The half a century old Bumblebees have... Read More »

After getting up this fine Saturday morning, while drinking a couple cups of my favorite coffee from Stumptown Coffee Roasters, I set about pulling off the bottom of my vintage vacuum tube McIntosh MX110Z tuner-preamplifier so I could do a little surgery on it. I had two things I wanted to do while under the bonnet, the... Read More »

If you read my recent post about tone capacitors you know there are three vintage capacitors that are very highly regarded for their tone, the Sprague Black Beauty, the Sprague Bumblebee, and the Mullard Tropical Fish, and they represent a sort of 'holy trinity' of tone for electric guitarists, as well as being at least partly responsible for the rich, musical tone,... Read More »

While doing the vintage McIntosh MX110 tuner-preamplifier adventure we experimented with several brands of new & NOS metal film resistors in the circuit in various places, but basically I always ended up preferring the vintage 2-watt NOS Allen Bradley carbon comp resistors that Andy Moore had suggested I try. The vintage 2-watt NOS Allen Bradley resistors had better tone,... Read More »

Ron-san and I got together today to celebrate the joys of audio & music and to listen to the latest iteration of our Real Sound Adventure with the vintage McIntosh MX110 tuner-preamplifiers. To complement our listening adventures, we had a couple of superb bottles of regional wines to sample, a 2013 Walla Walla Vintners Cabernet Sauvignon, and a 2013 Anelare... Read More »

A good alternate title for this post would have been "The Real Sound Education of Jeff Day" because that is the result of Yazaki-san's and Ron-san's influence on me during our mutual adventures with the vintage McIntosh vacuum tube gear. Due to Ron's influence, I have now made the transition of being a modification observer... Read More »

Have you ever woken up in the middle of the night with a major revelation? In my case my major revelation came at 2:53 a.m. last night, according to the screen on my iPhone. It was three thoughts coming together that triggered my overall revelation, but I want to tell you the story in the sequence that it occurred... Read More »

I sure have been busy lately, it seems, and I haven't been able to keep up with the blog posts I've been wanting to write for you, or to respond to your comments as speedily as I'd like to. If I forgot to answer a comment you directed at me, ping me again, because it... Read More »

Ron, Leo, and I got together to do a little listening to a variety of vintage preamplifiers last weekend, the Audio Research SP-6B, the Harmon Kardon Citation 1, and the McIntosh MX110. First we listened to Ron's vintage Audio Research SP-6B preamplifier so we could get a performance baseline for it, as we are getting ready to... Read More »