Catching Up

With 19 months having passed since the last entry in this blog, yes, it is high time to do some catching up.

One of the most interesting projects I’ve worked on since the last entry in this blog was the newest album by Jason Vitelli, whose Confluence I had the good fortune to produce, record, and release on Soundkeeper Recordings. For his latest, Head Above Tide  (extended-res version here), Jason needed a different approach than the one we used for Confluence. Where the latter was recorded live to stereo, for this project he needed the ability to overdub and to record different parts at different times. The project utilized the technique of recording the various parts with a stereo microphone array, similar to what I use for Soundkeeper projects, but with provision for laying each of them down at different times. (I wrote about this technique in Recording in Stereo (Part 2)). 

The basic tracks and many of the overdubs were done at Top of the World Studios, which I designed for my good friend Art Halperin. Art and Jason recorded it and the three of us mixed it there. Then I mastered it back at my own studio. Those familiar with mastering know that it involves listening to an album repeatedly. After doing the mixes and mastering this record, I think it notable that when I wanted to relax afterward and listen to some music, I kept going back to this album. Kudos to Jason for creating another original that challenges the listener (as all great music does) and rewards the effort with new joys on each hearing.


The first time I mentioned Metric Halo in this blog was back in November of 2013 in the entry called Three Decisions (Part 1). For those who may be new to MH, they are a premier supplier of pro audio hardware and software, with a fiercely loyal following among those who’ve been lucky enough to use their gear. The hardware consists of computer interfaces that serve as microphone preamps, A-D (analog-to-digital) converters, headphone amps, and D-A (digital-to-analog) converters, with more features than I will list here. The software consists of various plug-ins, an audio analysis application, and the MIO Console with Record Panel, the latter being built into their hardware units. Granted I have not heard every single competing product out there, but I believe I’ve heard the contenders (many in blind comparison tests). That said, to my ears, the MH gear excels in each of these categories to the point where, in terms of ability to simply get out of the way, I have not heard anything that comes close to matching it, much less besting it.

A while back, Metric Halo announced an upgrade was coming for their hardware and software. They called it 3d – a step up from the 2d boards it was to succeed. Keeping in mind the last sentence in the previous paragraph, I was curious to hear what the new hardware and software would achieve. Earlier this year, the hardware upgrade for my ULN-8 became available. The 3d hardware was in, but the beta software was still to be developed. And the unit wouldn’t run without it.


Toward the end of 2017, I spoke with Markus Schwartz about the idea of doing a follow-up to the Equinox project I produced and recorded back in 2010, and which was selected by Stereophile as their Recording of the Month in February of 2011. Thus the seed was planted for the next Soundkeeper Recording. Markus had ideas about the music and direction he wanted to go in, and about the players he would select for this outing. I told him about the upgrade to the recording gear from Metric Halo, and that there was time since I couldn’t record until I had received and tested the new software. More on this project in the next entry in this blog.

By the Spring of 2018, the software component of the 3d upgrade arrived and the listening tests began. Somehow, designer B.J. Buchalter had taken what I’d already felt was the best recording gear I’d ever experienced (particularly when used to make high-resolution, 24-bit, 192k recordings), and raised it up another level. It feels like dynamic resolution has been improved, adding a sense of realism and allowing the gear to get even further out of the way than its previous iteration. Sometimes you have to hear something better to know how something can be better. Congratulations B.J. and Metric Halo.


When Soundkeeper first started with downloads, we were breaking up the extended-resolution (24/96) and high-resolution (24/192) versions of our albums into gigabyte-sized files in order to keep download times as short as possible. Somewhere along the way we realized this was not necessary, and that a full album at any of the resolutions we offer could be provided as a single downloadable zip file.

Another development related to downloads is that most customers now seem to prefer these to the files-on-disc formats we offered before we got into downloads. For those who play files on their computers or via a dedicated music server, this makes sense as there are no shipping costs and the music arrives in minutes. With this in mind, the next Soundkeeper Recordings release will be offered as a CD and in six downloadable formats: 16/44, 24/96, and 24/192, as .aif and .wav. There will be no files-on-disc formats and no CD-R version. (We do have some stock of these for our previous releases but they will not be replaced once they’ve sold out.)

Next time, the new album.


Winds of Change

Almost eight years after we recorded the first release for my Soundkeeper Recordings label (documented in the December 13, 2013 entry in this blog, like the album, entitled Lift), I was once again joined by Art Halperin and his band, Work of Art, for a new project.

For a long time, Art and I had discussed a follow-up to Lift and now the time was right.  Art had written a great new collection of songs, which the band had been rehearsing.  I had recently made some new additions to the recording setup in terms of upgraded power and microphone cabling (see the previous entry in this blog, entitled New Connections).  And I found just the right recording locale for the project.

Instrumentation for the songs includes a wide collection of different guitars including both nylon-string acoustic guitars and Martin steel-string acoustic guitars, a Dobro type resonator guitar, a Guild 12-string guitar and a few electric guitars, one of which is the Fender Stratocaster given to Art by Eric Clapton.  Along with the guitars, a mandolin, pedal steel guitar, and ukuleles are also present on the recording, while double bass and drums accompany the voices throughout.  The rich vocal harmonies are a big part of these songs, some featuring up to four voices behind Art’s lead vocals.

For those interested in the recording setup, the equipment for these sessions was as follows:

Microphones: Earthworks QTC-1 (aka QTC-40, matched pair, separated by a custom designed baffle)
Mic cables: Nordost Tyr 2
Interface: Metric Halo ULN-8 (serving as microphone preamps, analog-to-digital converters, digital-to-analog converters, and headphone amplifier)
Laptop: Apple MacBook Pro
Software: Metric Halo Console X (including its Record Panel)
Power cables: Nordost Heimdall 2 (for interface) and Nordost Purple Flare (for laptop)
Power conditioner: Monster Cable HTS-400
Vibration isolation: Custom made base to support laptop and interface

One of the many nice things about this project was that the players, having already done one Soundkeeper Recording in Lift, were already familiar with the process and the fact that they would be together, hearing each other through the air, for real, as opposed to being separated by headphones and baffles and listening to an electronic mix via headphones.  Everyone knew they had to pay close attention to each other and to how their own sound blended with the whole.  They all knew we were capturing performances, without the ability to “punch in” later to fix any mistakes.

I selected a local 19th century church as the recording venue.  It is a stone structure with a wooden interior and a warm acoustic, providing a good sense of air around the players but maintaining a nice sense of intimacy, ideally suited to this music.

My expectation was that the stone construction of the church would result in a relatively cool interior, even for our late June recording sessions.  The good news is that we all had a great time, even though my thermal assumptions were off by a good measure.  In short, the music wasn’t the only thing that was warm.  Several large ceiling fans keep the air in the church circulating but these had to be turned off during recording, as the mics very clearly picked up the quiet hum they produced.  Next time at this locale, spring or fall would make optimal seasonal choices for the best indoor climate, free of the sounds heating or cooling systems would necessarily add.

We recorded in the church on two successive days and all the hard work Art and the band put in preparing for the sessions was clearly in evidence.  I have commented before on just how great the feel is in Art’s music.  It pleased me to no end to find that others noticed exactly the same thing upon hearing the early playbacks.  What surprised me at first, but upon reflection turns out to be no surprise at all, is how all the comments used the same word.  When my wife (and most trusted listening partner) first heard the playbacks, she said “This is such a joyful album!”  Others have used the very same adjective, including two of the players in subsequent independent communication with me about the sessions.  The word came up so frequently that one of my early candidates for the album’s title was “Joyful”.

The music and performances are certainly full of joy.  As it turned out, so were Art and yours truly as we listened to the impact the new cable additions brought to the results.  I mentioned in the previous entry in this blog that this project marked my first use of Nordost’s Tyr 2 cables to connect my microphones to the ULN-8’s mic preamps, as well as my first use of third-party power cables, in this case Nordost’s Heimdall 2 feeding the ULN-8 power supply and their Purple Flare feeding the laptop power supply.  As I said in that entry, both Art and I remarked that we’d never heard recorded acoustic guitars sound so much like the instruments themselves.  The speed and extension on the double bass too, matched the sound of the instrument at the sessions like we’d never heard before.  (Thank you Nordost, for taking my recordings to a whole new level!)  While I’d have been pleased with “Joyful” as the title, in the end we decided on an equally fitting one we like even more: Winds of Change.

The recording format was 24-bit, 192k sampling, captured by the ULN-8 to .aif files.    As has become the norm for Soundkeeper, we will release it in multiple formats, from 24/192 (.aif or .wav) files-on-disk, to 24/96 (.aif or .wav) files-on-disk, to 24/96 audio-only DVD (in DVD-V format), to CD-R, to pressed CD.

One other thing we decided to do for this project was document some of it on video, to share with Work of Art (and Soundkeeper) fans, some of the “behind the scenes” views of the recording sessions.  The videos will be completed once the audio mastering is complete and the album art is done.  There is still some work ahead of us before the album can be released.

Making a record is most definitely much harder work than most folks might realize, but making Soundkeeper Recordings has been, and continues to be, a delight.  How fortunate I am to know Art and his band, and to be able to produce and engineer this album.  For someone who loves making records, it doesn’t get better than this.

New Connections

It was almost a year ago, in one of the earliest entries in this blog, entitled The High End Arrives, that I recounted some of my first experiences with better gear.  In both of the specific instances mentioned, my expectations were toppled.  First, a different turntable changed my thinking from “turntables just turn” to having a greater appreciation for just how much more is involved in retrieving music from the spiral groove.  In the second instance, a change of speaker cables taught me that everything the signal passes through has an impact on the final sound.

That was a valuable lesson, particularly, as I came to learn later, when applied to making recordings, not just playing them back.  While I was reading about debates regarding whether cables could make an audible difference, I was bringing my own to work when I started mastering for CD.  I’d found that replacing the “pro” cables in the studio (which connected the output of the master tape playback machine with the input of the analog-to-digital converters) with “audiophile” cables let more of the musical information in those tapes get through to the CD master.  It wasn’t that the cables I installed were making the sound better.  They just did a better job of getting out of the way.

How odd, it seemed to me, that in some quarters, folks were actually trying to legislate audio, lobbying New York City’s Commissioner of Consumer Affairs at the time, in an effort to make audio cable advertising illegal. (!)  It is one thing to listen and not hear any difference.  It is also understandable that one might not comprehend what mechanisms could possibly be responsible for the sonic differences others hear.  I certainly wouldn’t want to force anyone to use cables they don’t want to use.  But by the same token, please don’t take mine away because you don’t hear what I’ve been enjoying.

When I started Soundkeeper Recordings, I sought to use the simplest, highest quality signal path to make my recordings.  To this end, I tried replacing my professional microphone cables with a set of balanced cables from an audiophile manufacturer.  If cables made such important differences in playback systems and helped me create more faithful CD masters, I was interested in hearing what they did at the very front of the signal chain, connected to my microphones.  In retrospect, I am not surprised this turned out to be one of the more obvious places where doing a better job of getting out of the way resulted in more Life getting to the recording.  They made the pro cables sound coarse, grainy, and closed in by comparison.  In short, they revealed the sonic fingerprint those pro cables superimposed on everything.

In a post from November of last year, entitled Three Decisions (Part 1), I talked about my first experience with cables from Nordost.  When I first built my own studio, after spending a number of months auditioning a wide variety of candidates for cabling, I kept returning to Nordost cables as they always allowed me to feel like I was hearing past them, to the recording itself—which is exactly what I sought from the monitoring system in the studio.  Where other cables I’d used sounded “good” (something I consider to be a coloration), these seemed very clearly to allow the sound of the gear being connected—and ultimately, the recording—to pass without editorializing or superimposing their own sonic fingerprint.  I listened to a number of different products within their line and found a family resemblance insomuch as that ability to get out of the way.  The more expensive models just seemed to take it further.  And the balanced interconnects, used as microphone cables, showed me that my microphones were even better than I’d previously thought they were.  Price being a major consideration at the time, I started with their least expensive speaker cables and interconnects, which replaced cables that cost three times their price (and which, in terms of getting out of the way, they sonically left in the dust)!  Over the years, I’ve stepped up to more elaborate models within the line.

Cut to the present time.  I have used different cables over the years and have enjoyed continual improvements in each one’s ability to get out of the way and let more of the music through.  For the past several months, I have been using a new set of cables, covering the signal path from my microphones all the way to my loudspeakers.  I have also been using some types of cables that I’ve never tried before.  For example, I learned years ago that better loudspeaker cables and better interconnects (both for analog and digital signals) made for great strides in the quality of a recording or playback system.  What I’d never tried yet though, were replacements for the AC cables that came with some of my gear.  (I’d also never tried using a better HDMI cable for video or anything other than a basic USB cable to connect the hard drive that houses my music library.)

Most of the new cables are from Nordost’s Heimdall 2 series.  While I was curious to hear the whole system with the new cables in place, I was intrigued by the AC cables, so I started by replacing only the AC cables on the components that did not have captive cables.  The first AC cord went from the wall outlet from one of the dedicated lines feeding the studio, to the power distribution block.  The next one went to the power supply feeding my Metric Halo ULN-8, which serves as my digital-to-analog converters in the studio (and also as my microphone preamps, analog-to-digital converters and headphone amplifier during recording sessions).  Others went to the studio power amplifiers and subwoofers.

Experience has taught me not to assess any audio component until it has played music for at least a week—and with loudspeakers, many weeks.  While the basic character might be evident right out of the box, maximum performance does not occur until the component has been in use for a while, until it has been “burned in”.  (I have read a lot of theory on why this is the case, as well as arguments from some quarters as to why it cannot be.  Not surprisingly, the latter come from the same folks who would say I’m imagining the differences I hear between cables.  All I can say is, if I’m imagining this, I imagine it every single time my assistant switches to these cables without my seeing which are installed.  And I’m having a great time!)

As one who has long appreciated what good cabling can do for a system, I was surprised it took me so long to try replacement AC cables.  And I was absolutely thrilled at how much more alive the system sounded.  By then however, my curiosity about what Heimdall 2 would do for the rest of the system came to the fore and I replaced the speaker cables, analog interconnects, and digital interconnects (S/PDIF from the CD transport and the USB cable from the hard drive housing the music library for the server).  The system was now wired with Heimdall 2 all the way from the AC outlets to the loudspeakers.  I put the CD player on continuous repeat and left the studio, only returning to occasionally grab a listen or switch to a different disc.  I wanted to give the system plenty of time to get wherever it was going.

By the time I started the serious listening, it was one of those events where you want to listen to recording after recording (and can’t hear them all fast enough) to find out what the new changes reveal about them.  If the AC cables brought a new and previously unheard sense of “snap” and life to the system, upgrading the rest of the cables forced a reevaluation of the system’s limitations.  I am hearing the Magnepan 3.7s do things I didn’t think Magnepans can do.  Specifically, there is now a dynamic “slam” within the system’s capabilities that I had long thought was just something I had to trade in exchange for the multiplicity of wonderful things the speakers can do, that make me love and admire them so much.  The AC cables are certainly a big part of this but bringing all the other cables in the system to Heimdall 2 solidified it even further.

The other major change I noticed with the new cables is how much easier it is to hear individual parts in a recording, particularly with complex passages played by large ensembles but also with simpler arrangements played by smaller groups.  It is just so much easier than before, to focus the attention on an individual voice in a choir or an individual horn in a section, etc.  And the system was no slouch about this before.  It has just been elevated a couple of steps.  Big steps!

In addition to the Heimdall 2 that has transformed the system in the studio, I am using a pair of Nordost’s Tyr 2 balanced interconnects as my new microphone cables.  I had the opportunity to give these a real test a few weeks back, when I recorded what I expect will be the next release on Soundkeeper Recordings.  In addition to the Tyr 2 cables on the microphones, this was the first time I made a recording with the new Heimdall 2 AC cable feeding the power supply for the Metric Halo ULN-8 (again, serving as the microphone preamps and analog-to-digital converters during recording sessions, not to mention the digital-to-analog converters and headphone amplifier for monitoring during the sessions).  Also on hand was a Nordost Purple Flare (figure-8 type) AC cable, which replaced the stock cable on my Apple MacBook Pro laptop, where the captured audio was stored.

Back in the studio after the sessions, I heard the same benefits mentioned earlier, captured in the recordings.  How much of this was the result of the different AC cables and how much was contributed by the stellar Tyr 2 cables on the microphones, I don’t know.  What was obvious to me though, and to the artist too when he first heard the playbacks and voiced exactly what I’d been thinking, is that we’ve never heard recorded acoustic guitars sound this way, i.e., so much like the instruments themselves.  The artist and his band utilized a wide variety of guitars on this project, both acoustic and electric, from nylon stringed classical instruments, to various Martin steel stringed guitars, to a 12-string Guild, to a resonator guitar (along with a number of electric instruments).  The sound of each, as well as that of the mandolin, double bass, percussion and other instruments, was captured as we heard them during the sessions, to a degree that is new to both of us.

As I’ve been listening to these cables for a good while now and have been reporting my music and audio experiences in this blog, I wanted to share some of this but had no intention of writing a “review”.  There are a number of other models further up Nordost’s own line.  Based on my previous experience with the ones I’ve heard, I would expect each of those to take it up another step or two from what I’ve been thrilling to each time I listen.  Meanwhile, the new connections have taken my recordings and my listening to a whole new level.