TIDAL Audio Intra Power Amplifier review
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The "absolute/measurements" school of audiophiles, i.e. the ones who firmly believe that flat frequency response of 20Hrz - 20kHrz is the ultimate target, take note. Research done at Canada’s National Research Council (NRC) and Harman International suggests that (and this is true to my experience) without a few decibels of domestic in-room bass boost (below 100–150Hz), most people find that a loudspeaker sounds thin and lacks bass impact and fullness. See also Harman Curve article at Headphonesaddict. BTW, when I owned Tact Audio RCS 2.2X digital pre-amp and room correction system I tested flat 20Hrz - 20kHrz correction curve, and it just sounded awful, lifeless.
Stereophile reports about most interesting iPod related third party hifi-equipment (below just some extracts, see full text here).
It also outputs component video signals for "up to DVD-quality" video.
I thought it was impossible to bypass the iPod's DAC. "So did we," said Wadia president John W. Schaffer. "Then we discovered the little-known fact that Apple had a process called 'authentication' that allowed mobile electronics companies to bypass the iPod's internal DAC."
"Authentication" refers to Apple's authentication chip, which essentially tells the iPod that it's okay to output raw digital audio or video data to the chip-enhanced component. The authentication chips are only available in Apple products or from products made by Apple-licensed third-party developers. After Wadia first began developing what became the iTransport, Apple opened up the authentication program to more third-party vendors. The iTransport may be the first audio product of its kind, but it probably won't be the last. But however you slice it, being firstest is a great coup.
"I think Apple approved our working on the iTransport because of our reputation as a high-end component manufacturer. Apple thinks of the iPod as a high-end source, so it made sense to them," said Schaffer.
In addition to its RCA S/PDIF and component video, the iTransport also sports a pair of RCA analog outputs, although that signal is apparently derived from the iPod's internal DAC.
"When you hear the digital output of the iTransport using full-resolution files like .WAV and Apple Lossless, you realize that it is a hi-rez source—and now that the iPod Classic has a 160GB capacity, there's no excuse for lossy compression," observed Schaffer.
The iTransport is compatible with "all current models," which means that models produced before the authentication program was implemented won't output digital or video—as I understand it, models that early don't output video anyway. I've posted a list at the end of this report.
Marten launces its latest loudspeaker design FormSeries at the 2008 CES. The lineup includes the FormSub, FormFloor and FormCentre (3100€, 4500€, and 2100€ respectively). The FormFloor and FormCentre models are two way loudspeakers that employ a pure ceramic bass/mid driver and ribbon tweeter. The triangular configuration of the FormFloor and FormCentre models is acoustically optimized to allow the speakers to totally disappear within the soundstage. The finishes are piano lacquer in five different colors/woods. The powerful FormSub model contains a 10-inch extremely long throw driver that is powered with a 400 watt Class D amplifier.
I'll sell the following items.
Quick note: Stereomojo has compiled a list of turntable manufacturers, see here.
Red Wine Audio now offers audiophile hardware modification for the newer 5/5.5 Generation iPods. According to RWA's web site, iMod is required because iPod experiences sonic degradation from the cumulative effects of non-audiphile grade stock components that are directly in the line-out signal path. In effect, preventing iPod's Wolfson DAC reaching its full potential.
From Dynaudio's comes new small desktop computer speakers, model MC15s (approx. €1200/pair). These active minis feature two integrated 50W amplifiers, the matching subwoofer is Sub 250 MC. Various CES 2007 and Stereophile HE 2007 show reports highlighted sound quality.
General public talks about MP3 and yet the audiophile companies keep pushing the Red Book CD boundaries. The latest high-end and stunning CD player comes from British Chord.
Now we know the reason for MF's (once again) excellent marketing campaign, i.e. 1st June 10:10 am announcement. MF 550K Supercharger are monoblocks amplifiers that use the kW550 power amp circuit in a low gain configuration. The 550K Supercharger is connected to the system just before the loudspeakers. All you have to do is disconnect the existing loudspeaker cable from the loudspeaker. Connect that cable to the Supercharger’s input. Connect the Supercharger’s output to the loudspeaker and connect the Supercharger to the mains.
German hifi magazine Stereoplay missed the boat ;) In June 2007 issue they gave Nordost Valhalla interconnects and speaker cables co-reference status (along Kimber Kable KS1036), yet Nordost had already raised the bar by announcing new Odin Reference cable range. Extract from Nordost material:
I've various high-end gear for sale.
During the last couple of months MF has generated buzz about important announcement at 1st June, exact 10:10 AM GMT. See their Web-site tomorrow what the buzz is all about...
In May a new hifi magazine was launced primarily for Finnish market. Most articles are written in Finnish, although selected articles are written in English for a broader audience. I contribute as a reviewer, in the first issue my review subject was McIntosh MC275 amplifier.
High-end audio giant Krell Industries is acknowledging the popularity of Apple iPod as it announced Krell IPOD Dock (KID) at the Home Entertainment Show 2007. KID's retails $1200, and offers balanced outputs (+ 2 RCA and S Video outputs) and bass and treble adjustments.
As an audiophile you must view this YouTube video about what compression does for recording. Even with small computer speakers you can easily here the consequences of dynamic range compression.
The Absolute Sound's editor Robert Harley has his own blog. I copy hereby pretty fascinating blog entry about history of Red Book CD-format.
"April 17 - The World’s Most Expensive Book—the CD “Red Book”
Audiophiles correctly use the term “Red Book” to describe the CD format, but incorrectly to refer to any 44.1kHz/16-bit digital audio, or even to pulse-code modulation (PCM, the CD’s encoding format) in general.
So, what exactly is the “Red Book,” and why would we describe an audio format with such a name?
When Sony and Philips jointly developed the CD format in the late 1970s and early 1980s (Philips contributed the optical system, Sony the electronics and error correction, broadly speaking), they needed a specification that described the format in detail for CD factories. When a CD replicator bought a license to manufacturer CDs (for $5000), it received a copy of this 8.5″ by 11″ document, which happened to have a red cover. (Each CD format has its own book and colored cover. The book that described the CD-ROM format, for example, has a yellow cover and is called the “Yellow Book.”)
I had a copy of the “Red Book” on my desk when I worked in CD mastering. It describes the disc’s physical parameters, encoding and decoding scheme, optical system, and types of data errors and maximum allowable error rates, among other things. The reference to 44.1kHz/16-bit linear PCM encoding occupies a miniscule fraction of the book’s contents, yet the term “Red Book” is now firmly entrenched as meaning 44.1kHz/ 16-bit digital audio.
The Red Book contains some interesting provisions that aren’t widely known. For example, the CD was designed to carry 4-channel audio as an option, but at a slower sampling frequency and shorter word length. This option was, obviously, never used. Another unused option is the provision for graphics, text, or other data in the disc’s “subcode.” The CD has eight subcode channels, designated P–W, with each having a data rate of a relatively slow 7.35 kilobits per second. The “P” channel simply “goes high” (binary 1) for two seconds before the start of each track to allow cheap CD players to find track starts; the Q channel contains all the timing and track information that you see on your player’s display; the R–W channels are reserved for other use, such as graphics or text. No CD players that I know of have ever been able to access the R–W subcode. I’ve seen R–W subcode graphics displayed experimentally and can tell you why they never caught on—it takes an agonizingly long time (because of the slow data rate) to “paint” a single still graphic on a video display.
It was widely reported that the CD’s specifications were influenced by conductor Herbert von Karajan, who told Sony’s president that this new format would need to hold Beethoven’s Ninth Symphony in its entirety. I don’t know if this is true, but I do know that the Red Book doesn’t specify the CD’s maximum playing time. Rather, it specifies the disc’s rotational speed (linear velocity), track pitch (the space between tracks) inner starting radius, and outer ending radius. (CD’s are read from the inside out, with the disc speed varying from about 500 rpm on the inner radius to about 200 rpm at the outer radius, which maintains a constant linear velocity as seen by the playback laser.) From these parameters one can infer the maximum playing time. For many years after CD’s introduction, 74 minutes was considered the upper limit of the CD format’s capacity. But by mastering a CD at the edges of the allowable parameters (slowest possible linear velocity, soonest starting radius, latest ending radius, narrowest track pitch), one can make a CD with more than 80 minutes of playing time that still conforms to the Red Book specification."
Evidently McIntosh has introduced a new version of its renowed Mc275 model, the Mk V variant. The mark V is the EU RoHS directive compliant product, i.e. lead and other "hazardous substances" free. In addition, Mk V finally eliminates strip speaker connections and has proper speaker connections, so you don't have to re-terminate your speaker cables. Also gone is adjustable sensitivity on unbalanced input.
Conrad-Johnson. Two legandary audio designers' (they are economist by education) name combined - and as a brand one of the Tier 1 American high-end audio companies. It just sound right, their slogan goes. And one product which put CJ into high-end radar screen was ART (for Anniversary Reference Triode) preamp. ART was first introduced in June 1996 (20th anniversary of CJ) and second incarnation ART2 came in 2001. The initial concept of ART was that CJ would only make 250 units, period. However, somehow only 225 series 1 and 2 models were made, leaving CJ with 25 chassis left over.
Although the UK-based print audiophile publication hi-fi+ was acquired by Absolute Multimedia, owners of longstanding United States magazine The Abso!ute Sound, it seems to remain review-wise unchanged. Which is good as the 50th issue exemplifies. The "analogue special" issue has for example reviews of SME 20/12 and Clearaudio Performance turntables, various phono-stages and cartridges, Burmester 061 CD-player, and finally, very first review of Audio Research LS26 linestage.
Enjoy the Music has a review of Ed Meitner's single chassis CD/SACD player, which upsamples the Red Book 44.1kHz signal to 5.6448MHz DSD.
In April 2007 issue of Revue de Son both oldtime reviewers, Jean-Pierre Landragin and Jean Hiraga, gave an extremely positive review of Nagra's latest CD-player, model CDP. To refresh your memory, Nagra introduced in early 2007 three new digital, Red Book products: the CDC equipped with a built-in DAC, remote control and pre-amplifier stage; the "conventional" CDP with a built-in DAC and fixed level analogue output; and a CD transport CDT designed to be used with an external DAC (like Nagra's 192 kHz/24 bit DAC). The chassis of CDx-family identical is in dimension to the Nagra's PL-P pre-amp and PL-L line-stage and thanks to the front-loading mechanism allows the units to be stacked neatly together.
I reviewed some weeks ago Sonos Sonos Digital Music System for a Finnish hifi-magazine. Two Sonos "systems" were subject to review: ZonePlayer 80 Bundle, consisting of two ZonePlayer ZP80s and one Controller 100 remote controller; and one ZonePlayer 100. See details of aforementioned products at Sonos Web-site.
German hifi-magazine Audio gave in 3/07 issue 100 points for Clearaudio's Performance turntable with Satisfy arm and Maestro MM cartridge, referring combo as one of the best buys in euro 2000 price point. And the French hifi magazine Prestige Audio Video in March/April issue gave the same trio equally good recommendation - "...not even very expensive considering its performance".
It is paradoxical that at the same time as music servers and computer audio are gaining popularity and turning the CD-players into "legacy" sources, CD/SACD-players are reaching the new pinnacle. Witness Naim's CD 555 or Accuphase's DP-78. It seems that current pecking order of state-of-the-art digital re-production is decided between two combos: Accuphase's SACD transport DP-800 / DC-801 digital processor and Esoteric P-03 universal transport / D-03 DAC. Accuphase 25.000 euros combo received from German Audio hifi-magazine all-time-highest 140 points for both CD and SACD re-production, Esoteric combo in the same magazine got "just" 135 for CD sound. Soundstage has a positive review of Esoteric on-line as well. In the Absolute Sound April/May 2007 issue Robert Harley evaluated the same Esoteric combo in TAS cover story, and named it as one of the best sounding digital source he has heard. However, there appears be two hot new rivals.
Arguably one of the most memorable products in the history of hi-fi was the Quad II power amplifier. Quad has nowadays the Quad II-forty and the Quad II classic power amplifier in its product portfolio, and has announced model Quad II-eighty. As its moniker indicates, the II-eighty will deliver 80 watts/channel into 8 ohms, and will be available around mid-year 2007. This all-tube, monoblock design is expected to cost about $10,000 per pair. Quad enlisted legendary designer and founder of EAR-Yoshino, Tim de Paravicini, to boost output and to refine the original circuit.
Balanced Audio Technology has announced new family of line stages to complement the solid stage model VK-42SE. On top of the line sits an eighteen-tube, two-chassis REX replacing model VK-51SE. BAT claims quite revolutionary approach for overall power supply of REX, and power module comes with 10 tubes.
In Shanling MC-30 Music Center cuts thru generations as it combines high quality CD player, tuner, dedicated iPod input and classic tube amplification in stylish, all aluminum retro chassis.