Soon to come: Remote viewing with Gold Note…

Coming soon: Time heals all wounds? The tie-in with hifi is obvious. It’s called break-in. Kinda. Let’s momentarily delay discussion about who breaks in and shift attention to audio reviewing. How much time does it take to do a proper review? Since I know my systems very well, for me a hardware change registers quickly. Once the component has been powered up for a day or two to shed low transit temps (cold speaker magnets are an example you may not have considered), it doesn’t take hours to know how it differs from the status quo. It’s right at that old/new cusp where the old remains powerfully entrenched and the new is as incisive and piquant as fresh-squeezed lime juice. It has you wide awake. Now give your listening apparatus a day to adjust…

Sub.terfugue. Clear-counting readers noticed a bevy of subwoofer-related features of late and likely wondered when I’d put a lid on those. Today could be that day…

Video culture. Before you suspect mixed-up channels, be assured that we’ll work our way to a happy hifi ending. To get there, we simply start in the kitchen for a change. Ivette had gotten tired of…

Contains no SLS/SLES, PEGS, parabens or petrochemicals. Save for the last, most of us not skincare practitioners probably haven’t a clue. But it’s what it says on a bog-standard Empire Australia bottle of aromatic body wash in our bathroom. It also claims to contain essential oils of bergamot, mandarin and lavender. That all reads swell but shows so far at the end of the ingredient list that one wonders just how much of it is really in there. 0.01%? Never mind. By proudly listing what it hasn’t got, we rightly know that stuff to be bad. Otherwise why lead with it? Surely nobody in their right mind would; and these folks must know the difference. Mustn’t they? Audiophiles do the same. No NFB. NOS. PEQ. No filters beyond 1st-order. No signal path capacitors. By implication, all that’s bad…

M for… mod. It could lead to modernity, mode or Modena to involve travel to Italy. It could be short for modification to get us closer at hifi like ModWright. How about modularity?

Sub.liminal? On paper, the new SVS 3000 Micro had it all in its category of micro sub: a ~11″ sealed box in gloss black or white; 8″ force-cancelling aluminium woofers…

KIH #83. Of stars and stripes or rather, new spots not on my conscience but taste buds. This is one of those tales which begins with “there I was minding my own business”. The interesting thing happens right after the next word. When. When what? Okay, so there I was wrapping up a recent review on a class A amp with 350kHz bandwidth mated to a class A preamp of 1MHz bandwidth. I put it to bed which in WordPress is a button called ‘publish’. Happy times and off to the next assignment. Later an upstairs light bulb began to flicker, then go steady. In said review, I’d compared the incomer to our class A Pass Labs XA-30.8. I’d stated my findings and moved on. Then something…

KIH #82 – Pop. With the smell of napalm following that noise on an otherwise fine morning, it wasn’t the weasel. It was one of my mono amps. Its flashing blue light indicated a fault condition. Off I powered it, then back on. The blinking persisted. Time to pack up and ship out for repair. What other amp/s did I have that might sound similar to tide me over? A look through the hifi closet spotted a promising candidate. In in went, then on. Now we hit the Verkacktheit of today’s feature. Similar wasn’t the same…

ADD. Today this isn’t shorthand for attention deficit disorder but algorithm digital defined. And, it is applied to AC power. Remember Bill Stierhout? He was the inventor of QRT Quantum Resonance Technology which sold to to Nordost in 2008.

You’ll have noticed a recent flurry of subwoofer-related reviews and articles. That’s because personal happiness with…

Have music. Got subwoofer? It’s no question most audiophiles ever ask themselves. That attitude is often caused by blockbuster movie mayhem and annoying boom trucks. What do permafrost drilling, nuclear explosions and crashing cars have to do with music? Nothing. So subwoofers find themselves struck off the equation. Bham! That was the sound of a door slammed shut. Clink! That was the key to it. But what if…

From the moon landing to the eponymous butterfly to the ancient Greek god, Apollo got around. By early 2021, he’d made it to the Denafrips assembly line where he is a 55kg stereo amplifier. That packs 225wpc of class AB push/pull power with 16 pairs of bipolar junction transistors per channel, a 2’000VA shielded power transformer, XLR-only inputs and black/silver finish options. 4Ω power still doubles to 450wpc and for a relative song and dance—that’s ~3’100 in foot-tapping euros—Apollo could be your huckleberry.

Unicorn sightings? That’s only if you misspell it. KEF’s new Uni-Core array is a patented solution to…

SPL Audio’s Crossover is for users whose subwoofer either includes no low-pass filter because it’s passive; or who wish to bypass what’s built in for something superior. It’s also for those who prefer…

I wanted to send some sort of New Year’s wishes to my friends and colleagues but it is difficult in today’s world to know exactly what to say without offending someone. So I met with my lawyer yesterday and on advice I wish to say the following:

Here I was just thinking this morning that maybe it’d be a good idea to let Srajan know of new developments at Rethm and here I get an email from you with some pretty impressive detective work. Not sure who posted those pix and how you got wind of them…

Oh my Kron. No, today your rare direct-heated triode didn’t die a fiery death. Today we’re profiling Omicron’s Tesla…

A Xmas story: Unholy oil. Today isn’t about Exxon Valdez, Deepwater Horizon or corporate malfeasance though it does involve oil. When we relocated from Switzerland to the Republic of Ireland, our first home ran a geothermal pump for radiant floor heating. Keeping warm during the cold months was built in. Our second rental now…

KIH #81: SUBversion. Recent experiments with an active filter built into my new autoformer passive preamp have suggested a new wrinkle for skinning the multi-way condundrum (well, new to me at least). Pál Nagy’s icOn 4Pro Model 3 SE includes 4th-order Linkwitz/Riley 40Hz outputs. Those feed mirror imaged data to monitors and subwoofer. The former’s roll-off starts at 100Hz. It’s down -6dB at 40Hz, -24dB at 20Hz. The sub does the opposite. Perfect handshake. Before I get at the subversive goodies…

May I borrow your ork? If we did Lord of the Rings, that’d get us at bork. Hello loaner ork. Grunt. Alas, wrong movie. borg.audio who insist on the spelling invoke Starship Enterprise and its crew’s cybernetic phantom nemesis, the hive-mind Borg. Fittingly, two of their models…

Fake hifi news. There I was minding my very own bananas. Then this press release dropped. Clunk! Ouch! Doctor! …

KIH #80. The life of Pi in 2 and 4. Those numbers refer to half and full space. In audio they describe sound which either propagates omni as bass does—you get four pies for that—or sound which bundles like high frequencies over a 1-inch dome tweeter. That’s worth only two pies. Those who believe in fuller plates often reach for super tweeters. It seems a mistake to think them ‘super’ for additional bandwidth when human hearing doesn’t extent past ordinary tweeters. If a super tweeter can really hit 100’000kHz, it’s not germane to our ear/brain per se except perhaps for zero phase shift. There’s also the issue of first break-up modes. An aluminium tweeter which breaks up at 23’000Hz will reflect ugliness into the audible bandwidth unlike a diamond tweeter that’s good to 70’000Hz. But let’s return to our pie as a function of dispersion. If the ‘super’ in an add-on tweeter isn’t about bandwidth but broader dispersion, it should …

How will we be remembered? Marja & Henk were my oldest contributors. They joined 6moons when Ivette and I still called Taos/NM our home and listened to Avantgarde Duo speakers like our Dutchies did. They also were the only wife/husband reviewers I knew and knew of. Sunday before last, Marja emailed me a long very carefully crafted and detailed letter…