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Jeff checking in ... Audio Note (UK), First Watt, Leben, Pass Labs, and Triode Lab!

With 2020 in the rearview mirror, I had hoped 2021 would usher in a reprieve from our troubled world, but it was not to be. Locally, we've had weeks of 100F+ weather, smoke from wildfires filling the air, and the delta variant of the coronavirus is filling the local hospitals to overflow with unvaccinated (mostly)... Read More »

Jeff checking in: Audio Note (UK), Duelund, Leben HiFi Stereo Company, Pass Labs, Sophia Electric, and other stuff!

I just finished up the feature review of the Leben HiFi Stereo Company CS-600X vacuum tube integrated amplifier for Positive Feedback, which you can read HERE.  Like the CS-600 integrated amp that preceded it, the CS-600X is a terrific moderately powerful integrated amplifier, with 32W from 6L6GC output tubes, and 28W from EL34 output tubes. ... Read More »

Jeff checking in ... Audio Note (UK), Fender, Leben, Pass Labs, Sophia Electric, and other stuff!

POST COVID-19 RECOVERY I’m doing a little better all the time in my Covid-19 recovery phase. My post Covid-19 symptoms are reducing in intensity and frequency, so things are going in a good direction. I'm hoping to be fully recovered in the next three to four weeks, so I can resume more of my normal activities,... Read More »

Today's Fresh Catch: Vacuum Tubes for the Leben RS-30EQ Phono Preamplifier

As long-time readers know well, I really love my Leben CS600 integrated amplifier and the matching Leben RS-30EQ phono preamplifier (as well as the new Leben CS600X that I think is even more gorgeous sounding than my original CS600). There's only one caveat to consider with some of the Leben components, like the Leben CS600... Read More »

Leben CS600 & CS600X: Tube Rolling with Sophia Electric vs. Electro-Harmonix EL34!

Besides their superb musical & sonic qualities, one of the great sources of joy for owners of vacuum tube amplifiers like the Leben CS600 / CS600X integrated amplifiers are adventures in trying different vacuum tubes to voice their amplifiers to best match their overall system characteristics, room, and their personal preferences.  I've been a huge... Read More »

Tube rolling in the new Leben CS-600X integrated amplifier - Sophia Electric vacuum tubes & NOS 12BH7A's! Update!

One of the favorite pastimes of many original Leben CS-600 integrated amplifier owners has been trying different combinations of vacuum tubes in their CS-600 to tailor its sound to what best matches their personal taste. The Leben CS-600 tube complement is four twin-triode 6CS7 vacuum tubes used in the first-stage of amplification, a single slow... Read More »

A look inside the new Leben CS600X integrated amplifier!

The new Leben CS600X vacuum tube integrated amplifier that is in for review has been getting run-in time in my vintage Altec A5 Voice of the Theatre loudspeakers based audio-visual system in the place normally occupied by my gracefully aging original Leben CS600. I was impressed with what I was hearing from the new Leben... Read More »

Quick Comparison: NOS SED "Winged C" EL34 Vs. Sophia Electric EL34-ST Vacuum Tubes

I've been running the Sophia Electric EL34-ST vacuum tubes in my Leben CS-600 integrated amplifier ever since I reviewed them for Positive Feedback back in August of 2017, and I've put a ton of hours on them since then. In my "Summary and Conclusions" for them, I said: "I'm noticing a pattern here with both the Sophia... Read More »

A nice surprise: the Leben CS600 powering the vintage Altec 832A Corona loudspeakers!

My buddy Chad borrowed my Almarro A205A over the weekend so he could give it a listen in his cabin system up on Lake Chelan (Chad's already got the Almarro A205A MkII in his main system).  I've been using the Almarro A205A Mk1 integrated amplifier to power my vintage Altec 832A Corona loudspeakers in my... Read More »

First listening impressions of the new Leben CS600X integrated amplifier!

Wow, I am amazed at the amount of people writing to me and asking me about the new Leben CS600X that just arrived here at Jeff's Place, and how it compares to my original CS600 - there's a lot of you Leben fans out there! I had been planning on writing a "listening impressions" update... Read More »

Today's Fresh Catch: The New Leben HiFi Stereo Company CS600X Integrated Amplifier!

It's an exciting Saturday afternoon here at Jeff's Place with the arrival of "Today's Fresh Catch", the new Leben HiFi Stereo Company CS600X Integrated Amplifier! Those of you who have been reading my writing about hifi for a while know that I love integrated amplifiers, and the original Leben CS600 impressed me so much in combination... Read More »

Jeff checking in ... upcoming reviews and other cool things!

THE DUELUND-ALTEC PROJECT! I am so inspired and pleased by the way the Duelund-Altec Project turned out that I practically have to pinch myself to make sure I'm not dreaming! Be sure to get out and read the feature article at Positive Feedback at the above link, as I think you'll really enjoy it, and it will... Read More »

A vinyl morning with the Altec A5 Voice of the Theatre loudspeakers!

To get my mind off the plunging stock market and my plunging retirement savings, I thought I'd do something edifying like give my Thorens TD124 a try on my vintage Altec A5 Voice of the Theatre loudspeakers. I've wanted to revisit the Leben CS-600 integrated amplifier and Leben RS-30EQ combination that works so well together... 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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