Wall of Sound

Recordings, Concerts and Audiophile Reviews
  1. Mr. Young Ahn of Fluxion E&M is a busy man. Busy building amplifiers, mainly. These NT-6 monoblocks are his most ambitious undertaking, to date (he tells me he is working on an 833 amp!). The NT-6 is a single-ended power amp, it’s switchable between 211 and 845 tube output power. As with all Fluxion amps, the transformers are wound in house. I saw a finished amp today, it’s a stunning piece of equipment. And there will be a listening opportunity on April 28th – details below. This is a private event, contact Mr. Ahn for further info.   FLUXION new product introduction and audition Date: Friday, 28 April 2017 Time: from 8 pm Place: Hamilton, Ontario (near Lincoln Alexander Parkway / Upper James) Capacity: 10 people only, by appointment Contact: Young Ahn, [email protected] Product Details: Model : NT-6 Type : 845 / 211 switchable monoblock power amplifier Continuous output power : 18 watts(845), 12 watts(211) THD : 1 % @ max. output FR : 20Hz ~20KHz(-1dB) Input sensitivity : 1Vrms
  2. We received word from Steven Huang that the acclaimed Dr. Atsumi Ohno has passed away in Japan; he was 92. Our condolences go out to Dr.Ohno’s family and friends. Although most audiophiles own cables which utilize the OCC technology, few know about the man behind the physics, chemistry and metallurgy of this process. Steven’s father worked closely with Dr. Ohno at the University of Toronto, and Steven maintains an informative page about Dr. Ohno and the science teams who developed and patented OCC. (link) Below is the message from Steven Huang of Audio Sensibility.   Dr. Atsumi Ohno. Inventor of the Ohno Continous Casting (OCC) process. Dr. Atsumi Ohno (1926-2017) I received the following sad news yesterday of Dr. Atsumi Ohno’s death from Hiroshi Soda who ran the University of Toronto Ohno Continuous Casting (OCC) Research Lab. Dear Steven, I want to let you know that Dr Ohno passed away on April 13 in his sleep. He was 92. It was sad news but a lot of good memories remain. Hiroshi Soda My father, Dr. Robert Huang (left), first met Dr. Ohno while both were doing their PHD studies in engineering at University of Toronto in the early 1960s. Dr. [...]
  3. Power (Tubes) To the People: A Survey of 4 Sets of Tubes in 2 Push-Pull Amps by Steve Graham   Regarding the picture above; No, I didn’t power-up with one of each installed and yes, I had four of each of the above tubes for the shootout. I did say after my 6DJ8 (part 1, 2) tube shootout, that I didn’t want to do another one soon.. but here I am, this time with power tubes.  There won’t be any unobtainable NOS tease-tubes this time, just current production. The inspiration for this test was the fun I had building and listening to the Elekit TU-8340VK (review part 1, 2).  I did a little bit of casual tube rolling during the review, but settled on Electro-Harmonix 6550 output tubes as decent, not expensive, all-rounders.  A raid of my box of 12AT7s yielded a quad of new production Tung-Sols, spares for my phono stage, which worked very well.  Though not the least expensive 12AT7’s available, the Tung-Sols are not outrageously priced.  The Elekit TU-8340VK I built and reviewed contained the resistor upgrade package and the less expensive of the two Mundorf coupling capacitor upgrades. Good-guy Jon at Thetubestore.com kindly loaned me the Genalex [...]
  4. by Steve Graham Of course you know I’m not going to answer the title question until the very end. So, you instant gratification types – I’m one of you – use your favourite scrolling digit and skip to the end, as long as you promise to come back and read the whole article. Now that you’re back, I have a little housekeeping to do first. Victor Kung called me just after part 1 was posted and informed me that I had made a couple of errors. In my defence, Victor is a wellspring of knowledge which he is only too happy to share, but at times it bursts forth from him with such speed and enthusiasm that I couldn’t jot it all down. Anyway, here’s the correction: “He (Victor) ordered special production runs of Takman 2% carbon film resistors to replace the stock generic 5% resistors normally supplied by Elekit. As well, he ordered two expensive, custom Amtrans resistors for use in a critical power supply location.” Later on in part one I should have said, “The amp I built came with the stock Elekit output transformers, the 66 piece Takman 2% and two Amtrans 2W resistor option and eight [...]
  5. By Steve Graham     Octogenarian Gives Birth to Triplets   I thought I’d start this installment of My Audio Life with a supermarket tabloid-style headline. Noam and I had a brief and slightly silly email exchange where he shortened My Audio Life to MAL. “Maybe we should start a Wall of Sound clothing line called MALwear”, was my response. I can see it now, hoodies, caps, T-shirts and baggy shorts so fans of this site can proudly display their support for WOS. Maybe if I slip Drake a couple of choice 1956-vintage, NOS Valvo Hamburg 12AX7 long plates from my stash, he’ll appear in a future video sporting some MALwear. If Drake or any of his fans are reading this, please don’t take offence. It’s meant in the spirt of fun only. Drake, if you want a personal apology you can call me on your, “Cell Phone”. Silliness aside, all future installments of MAL will lead with a bold title to grab the reader’s attention and hopefully help it pop up on internet searches. So here goes:   Should HiFi Equipment have Donor Cards? or perhaps:   Hip Hop Mega Star Caught With 12AX7 Tubes Embarrassed Singer Says, “I [...]
  6. Elekit TU-8340VK Amplifier, Part 1 of 2 by Steve Graham In fact, this new amplifier isn’t even your father’s Elekit. Up to now, Elekit power amps have been single-ended (not push-pull), and except for the 300B-sporting TU-8300R, a bit underpowered in my estimation. Not that there’s anything wrong with that – as long as you have a sympathetic room and speakers. With the TU-8340VK, Elekit is going mainstream in a big way. It’s a push-pull amp that can use output tubes ranging from 6L6GC’s (32wpc ultralinear, 18wpc triode) to KT150’s (50wpc ultralinear, 28wpc triode) and tubes between these two extremes including EL34’s and 6550s’, to name but a few. The user can even switch between ultralinear and triode mode ‘on the fly’ – the partial disassembly required to access jumpers, as was the case with some earlier Elekit amps, is a handy switch with the 8340. Four 12AT7/ECC81 tubes are employed, for phase splitting and voltage amplification duty. But let’s back up a bit to 2016. Victor Kung (of vkmusic.ca) is the North American distributor of the Japanese-made Elekit audio products. Calling Victor a distributor is a disservice, it sounds cold and commercial. Victor is passionate about good sound and the DIY [...]
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