Kalman Rubinson

Kalman Rubinson  |  Sep 22, 2021  |  15 comments
Adoption of DSP-based speaker-and-room correction in home theater—a parallel universe to audiophilia—is almost universal. It's easy to understand why. Home theater matured in the digital age. Its fans were expected to install several loudspeakers in a full-range setup that included at least one speaker—the subwoofer(s)—that functioned exclusively in the problematic bass region. Setup issues were intimidating.
Kalman Rubinson  |  Jul 14, 2021  |  16 comments
Over a lifetime of audio shows, I've consistently enjoyed Dynaudio speaker demonstrations. Each time, I've told Dynaudio North America's Michael Manousselis that I'd love to review the speaker on display that year. But I never followed through. So, when Jim Austin suggested I review a Dynaudio speaker "because they haven't gotten much press," it resonated with my deep-seated guilt. A little research revealed that the last Dynaudio speaker Stereophile reviewed was the 40 Special in November 2018. The last floorstander was the Dynaudio Sapphire in 2009!
Kalman Rubinson  |  May 21, 2021  |  21 comments
Power amplifiers should be boring. They have a single, well-defined function: Make the input signal large enough to run a loudspeaker so that it makes sound at levels suitable for listening to music. Generally, controls and features are few or none. Peter Walker of Quad famously defined the ideal amplifier as a "straight wire with gain." That's just one feature: gain.
Kalman Rubinson  |  Apr 06, 2021  |  5 comments
I have reported on exaSound DACs since the introduction of the e18 in 2013, but those reports were in my Music in the Round column. This is Stereophile's first full review of an exaSound product and the first time one has spent time on JA's test bench.
Kalman Rubinson  |  Apr 06, 2021  |  0 comments
A digital front end comprises several elements: data storage, library management, program control, signal distribution, signal conditioning, and digital-to-analog conversion plus all the necessary interconnections. All this can be contained in a convenient single box, or it can be distributed.
Kalman Rubinson  |  Jan 29, 2021  |  11 comments
Is this all there is to it? I had done some superficial investigations of Volumio online, after the Primo was suggested to me for review. I had learned that the Volumio player software is available for several hardware platforms including Windows, Mac, and Raspberry Pi, but I had not tried it before. I discovered Volumio's reputation as an efficient, Linux-based music player, installable with an SD card on minimal hardware and said to support virtually all music formats and resolutions including DSD and multichannel. But I had not experienced any of this for myself.
Kalman Rubinson  |  Nov 30, 2020  |  First Published: Dec 01, 2020  |  7 comments
For a couple of years, I have been following Prague-based Okto Research. At first, Pavel Krasensky, the founder and hardware developer, offered audio design ideas and DIY modules that I found tantalizing. For example, there was a dandy-looking ESS 9038Pro Sabre–based output module and some appealing power supply modules—but to use those, the buyer had to manage inputs and integration on their own.

Then, finally, last year, Krasensky released the dac8 PRO, an 8-channel D/A processor with USB input and output, 8 channels of AES/EBU input, and 8 channels of balanced (XLR) analog output as well as a headphone output.

Kalman Rubinson  |  Nov 27, 2020  |  19 comments
My, how we've grown! The experience that convinced me of the inevitability of streaming was in 2010 with the tiny, tidy Logitech Squeezebox Touch that, despite being discontinued and disowned by its manufacturer, still has a cult-like following. Since then, we have seen an explosion of devices for file playback from local or nonlocal storage and web streams.
Kalman Rubinson  |  Sep 28, 2020  |  11 comments
On the cold and sunny morning of February 19, 2020, a dozen or so audio critics and writers gathered at Gilmore's Sound Advice on New York's far West Side to see some new NAD and DALI products that had been unveiled the prior month at CES. It was a friendly group, and we kibitzed over coffee before clustering in the arranged seats for presentations and auditions. I doubt any of us realized that it would be the last time for the foreseeable future that we would experience this familiar rite.
Kalman Rubinson  |  Jul 28, 2020  |  62 comments
Some contentious issues will not be resolved in my lifetime: vinyl vs digital, tubes vs solid state, subjective vs objective, streaming vs physical media.

Also, subwoofers vs no subwoofers in a stereo music system.

Pages

X