U-Turn Audio is funding their project through Kickstarter and hopes to raise $60,000 by Monday, January 21, 2014. As I write, 90 backers have pledged $15,666.
Many readers have asked why we don't maintain a permanent listing in each issue of The Stereophile of those components that we feel to be the best available, with or without qualification.
So, we are following our readers' suggestion, and will list in each issue groups of components which, at publication time, we feel are ones from which our readers would be well advised to assemble their systems. The list will change from time to time, as new products appear, old ones are obsoleted, or manufacturers change their quality control standards. Components will be added to or dropped from the list without advance notice if we see adequate reason for doing so, but each change in the list will be explained in the magazine at the time the change is made.
We will also furnish, upon request from listed manufacturers, written permission to use their listing in connection with promotional activities, because we are just as anxious to see good components make money for their manufacturers as we are in directing our readers to them.
We cannot be responsible for the failure of systems using these components to perform as expected. All we can do is list in each group those components that we know to be intrinsically excellent.
Components listed here are categorized as follows:
Class AHighest in price, quality, and prestige value.
Class BSonic quality about equal to Class A, but lower in cost.
Class CSlightly lower-quality sound, but far better than average home hi-fi.
Class DGood, musical sound, better than the average component system, but significantly less than the best sound available.
It is assumed that the buyer will select his loudspeakers on the basis of room size, acoustics, and personal preference, and will make the necessary system adjustments correctly. A speaker should be driven by the amplifier in its same quality class whose power capability meets or exceeds the speaker's needs. Speakers are listed in order of brilliance and efficiency; power amplifiers are listed within each category in order in increasing power output.
Some unlisted components may well provide equivalent quality in the categories listed above, but buyers will choose unlisted ones at their own risk. The list contains only components that we know to be outstanding in their categories.
Turntables
A: Thorens TD-124
B, C: Garrard 301 or Gray PK-33 (footnote 1)
D: Garrard Type A
Tonearms
A: SME 3009-2
B, C: Weathers Universal
D: Garrard (above)
Cartridges (footnote 2)
A, B: Weathers PS-11
C: Weathers LDM
D: Audio Dynamics ADC-2
Tape Recorders
A: Ampex 350-2 (footnote 3) or Ampex 354 (footnote 3)
B: Ampex 605-3 (footnote 3) or Sony 777
C: Sony CS-300 or DK-300 deck
D: EICO RP-100 or Viking 86
Tuners
A: McIntosh 10FM or Scott 4310
B, C: Dynaco FM-1/FMX-3
D: Pilot 28
Microphones
A, B: Sony C-37A, Neumann U-67
C: B&O 100
D: B&O 53
Headphones
A: Beyer DT-48
B: E.J. Sharpe HA-10
C: Superex ST Series
D: Koss SP-3
Preamplifier-Control Units
A: Marantz 7, McIntosh C-20
B, C: Dynaco PAS-2
D: Eric 3160T (footnote 4)
Power Amplifiers
A: Marantz 8B, McIntosh MC-60 (footnote 5), Marantz 9A (footnote 5)
B, C: Dynaco Stereo 70
D: Eric 3160T (footnote 4)
Speaker Systems
A: Altec A-7, ElectroVoice Patrician 800, Bozak B-310, KLH 9
B: Janszen Z-400, Hartley 220MS, Acoustic Research AR-3
C: KLH 6, KLH 7, Acoustic Research AR-2A, IMF Styrene
D: Wharfedale W40
Footnote 2: Add General Electric 4G-061 for 78rpm discs.
Footnote 3: Two-track only.
Footnote 4: Integrated preamp-amplifier.
Footnote 5: mono amplifier.
According to Dolby:
The Blu-ray features amazing Dolby TrueHD with advanced 96k Upsampling and 7.1 surround sound, immersing you in the concert and taking full advantage of Blu-ray disc capabilities for optimal play in home theaters. In addition, Dolby conducted a special interview with the star of The Orchestrion Project, Pat Metheny that your audience will love. The video contains a Q&A with Pat as well as insight into the stunning TrueHD 7.1 surround mix, the video can be found here.Last May, Dolby launched its latest solution, Dolby TrueHD with Advanced 96K Upsampling (see here for release). Dolby TrueHD with Advanced 96k Upsampling has been installed in strategic authoring facilities and home video companies worldwide. Since its launch Dolby TruedHD with Advanced 96K Upsampling has been featured in 38 global titles and counting, demonstrating the tremendous amount of attention the solution continues to receive.
Dolby TrueHD with Advanced 96Kupsampling is an advancement to Dolby TrueHD which delivers the highest quality lossless audio experience possible from movies and television programming on Blu-ray disc by incorporating refinements that enable your home theater system to operate to its fullest potential.
To enter the sweepstakes, all you need is an account on this website. If you don't already have one, click on the link labeled "register" at the bottom of this announcement or "Create new account" in the right column (under the ads). Then, enter a username and a valid e-mail address, and click on the "Create new account" button. A message will be automatically sent to the e-mail address you specified, which will include a link to activate the account.
The final step (and only step for those who already have an account) is to log in and leave a comment right here on this announcementany comment will do, as long as it's not profane or spam. Then, when the sweepstakes closes, a lucky commenter will be chosen at random to receive the prize. So post a comment, and good luck!
For complete sweepstakes rules, click here.
GigFi combines two of my absolute favorite things in the world: custom playlists and live music. By creating customized Spotify playlists listing music from artists playing shows in your city within the following days, GigFi provides an aural summary of the music happening around you at all times. I had no idea Medeski, Martin and Wood were in town! And Dethklok?? And it's not just about figuring out which big dogs are around, GigFi offers music discovery by including tracks of all the artists it possibly can based on Spotify's own library, and introducing you to what could be a very affordable night of excellent independent music. They also offer links to purchase tickets for each show. GigFi is the total music discovery package.
While most high-end phono cartridges have been based on moving-coil principles, Grado has continued to develop and improve his moving-iron designs. Similarly, he has not chosen an electrostatic design for his new headphones, instead refining dynamic moving-coil principles. Each earpiece of the HP 1s contains a small dome-shaped diaphragm approximately 5/8" in diameter. The diaphragm is made of a low-mass plastic with high internal damping in an attempt to control high-frequency resonances which often lend an artificially bright tonal balance to headphones. Joe wasn't interested in extending the high-frequency bandwidth to daylight or beyond. The diaphragm was designed to offer rigidity, and consequently low distortion, within the audible bandwidth, and at high volume levels.
The voice-coil is attached to the perimeter of the diaphragm, in a manner similar to a dome tweeter. Surrounding the voice-coil is the suspension, which is made of the same material as the diaphragm. The suspension is approximately 5/16" wide, larger than on many headphones, but allowing sufficient compliance for accurate low-frequency reproduction. The suspension is said to radiate some energy at low frequencies. Special attention has been paid to the wire in the voice-coil, using slow drawing and annealing to produce a wire with an extremely smooth surface.
The HP 1s are constructed unlike any other headphone I've encountered. Grado's design goal was to minimize and control the resonance problems which plague so many headphones with plastic housings. You won't find a single piece of plastic anywhere on the HP 1s, each earpiece assembly being constructed from machined aluminum alloy parts, brushed for an attractive appearance. During processing, some of the alloy is removed, resulting in a somewhat porous metal. Final treatment of the metal fills in the porosity with a nonresonant material.
The headband connecting the two earphones is a solid, curved, stainless-steel spring rod padded with genuine leather. Grado claims that the diameter of the spring rod is critical; if changed by only 0.001", the sound will also change. Similarly, substitution of a material other than leather for the pad will have a detrimental sonic effect. Straight, solid, stainless-steel rods project from each earpiece, and two solid aluminum blocks containing thumbscrews, at either end of the headband, allow individual height adjustment of the left and right sides.
In common with most current headphones, the diaphragms of the HP 1s are not mounted in a sealed housing. The back of each earpiece is fitted with a stainless-steel screen, eliminating the colorations associated with sealed enclosures. The rear of each diaphragm doesn't radiate completely freely, however. It is resistively damped in order to equalize pressure on both sides of the diaphragm when the headphones are in use. A polarity switch is mounted on each screen, allowing the user to correct for errors in absolute polarity on recordings. Each earpiece is fitted with a soft foam cushion. The HP 1s fall into the supraaural rather than the circumaural category of headphones since the cushions rest against the ears' pinnae rather than surrounding them.
The HP 1s are supplied with a premium-quality interconnect cable made to Joe Grado's specifications. A gold-plated phone plug is molded to the end of the cable, but the plug may be the weak link in the wiring. The gold plating is not particularly heavy, and mine was already showing signs of wear as a result of use during my listening evaluations. Unlike most audio interconnect cables, which can remain plugged in for months at a time, a headphone, particularly in a professional recording environment, will be subject to constant insertion and removal. There is a definite need for a gold-plated ¼" phone plug which can stand up to heavy use. So far, I haven't seen any. Of course, another limitation in the connection will be the ¼" jack into which the headset is plugged. No one, to the best of my knowledge, makes a high-quality, gold-plated, chassis-mount ¼" jackall are plated with nickel, a sonically mediocre conductor.
Anyone who has ever repaired a headphone (I've unfortunately fixed dozens of them) will appreciate the Grado's all-metal construction. The majority of headsets are made of molded plastic parts, which are either fused or glued together. Sooner or later, most headphones subject to heavy use will require some type of repair. This usually involves replacing the cable assembly due to a broken internal wire. In order to replace a headphone cable, the plastic pieces must be literally broken apart. After connecting the new cable, the now-broken plastic pieces must be glued back together. Needless to say, this is an extremely irritating process.
The HP 1s can be disassembled in minutes. Each earpiece contains seven Allen screws which hold the driver assembly in place. Removing the Allen screws frees the assembly for removal from the aluminum housing, allowing easy rewiring. This should make the Grado headphones extremely attractive to music libraries and other institutions. I realize that $600 is more than most libraries normally spend on headphones, but the ability to rewire the HP 1s, again and again if necessary, without the destruction of the headset, makes them an excellent long-term investment.
Quality control is essential to the performance of the HP 1s, and every headset is hand-assembled and tested by Joe Grado. Parts which are not quite up to spec, but still within the bounds of acceptability, are not thrown away, however. These parts are used in the HP 3 headphones, which sell for $395. In addition, Grado offers the model $495 HP 2, which is identical to the HP 1 but lacks the polarity-reversal switches.
Amplification requirements
Evaluating headphones can be a difficult task, particularly when it comes to selecting a suitable amplifier. A high-current, high-powered amplifier capable of driving low-impedance reactive loads with minimal sonic coloration will probably perform well with any loudspeaker it drives. In my opinion, this is not the case with headphone amplifiers. Dynamic headsets have widely varying impedances, from 8 ohms to 600 ohms and beyond. The impedance of a dynamic headset is determined primarily by the DC resistance of the wire in the voice-coil and the inductive reactance of the coil. Electrostatic headsets present an entirely different type of load, and the best of them require an external power supply for the polarizing voltage.
As I see it, at least three distinctly different types of headphone amplifiers are needed for the wide variety of headphone designs currently available. An 8 ohm dynamic headset is best driven by a small power amplifier. Paul Klipsch once said that what the world needs is a good 5W amplifier; in this particular case, I agree. Many dynamic headsets have impedances in the 30 to 40 ohm region. For these headphones, a power amplifier designed for very-low-impedance loads is overkill, and invariably requires the use of some type of resistive attenuation between the amplifier and the loudspeaker. For these headsets, the amplifier should more closely resemble a preamp line-level stage, having a voltage gain of around 10, with a low-impedance buffered output. 500mW of power into 40 ohms is more than sufficient, and this type of amplifier will work equally well with 600 ohm headsets.
Electrostatics normally require a small power amplifier, but in this case the amplifier must be able to drive a small capacitive load without instability and must also provide the necessary polarizing voltage, if required. Some electrostatics, such as the Stax Lambda Pro headphones, are normally powered by the manufacturer's own amplifier. I agree with such custom tailoring in a electrostatic headphone amplifier, rather than simply using an adaptor box containing the polarizing supply. Most adaptor boxes contain a matching transformer which provides an 8 ohm load for the power amplifier, but a transformer will deliver poorer sonic performance than an amplifier direct-coupled to the electrostatic elements.
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At its onset, screeching and chopped vocals, a melody cracked off like a piece of firewood from Crystle Castles "Pale Flesh" from their record (III), play catch up with with a deep rubber-band like bass pulse. Crystle Castles' shrieks echo of Lizzi Bougatsos tribal and petrified screams from Gang Gang Dance's Glass Jar, but as the snare guides you to the turnaround and into the verse, a crackling fire-pit of of diced synthesizers and reversed vocal loops, it becomes clear were dealing with something much more electro, something much more IDM based than the primal screams indicated before.
We are approached with a coherent melody assorted together through rearranged vocal samples and alternating synthesizer melodies creating an inherent rhythm between the samples, a piecemeal approach to groove. The deep bass pulse continues, doubled down by the snare followed by an ambient breakdown free of drums. At the chorus, fearless hi-hat programming breaks the silence switching effortlessly between breakneck speeds and slurred triplets. Is your head-bobbing yet? Are you dancing? Where the hell did that piano come from? Gosh, I love electronic music.
Ravi Coltrane, Spirit Fiction (Blue Note)
Vijay Iyer, Accelerando (ACT)
Fred Hersch, Alive at the Vanguard (Palmetto)
Ted Nash, The Creep (Plastic Sax)
Chick Corea/Eddie Gomez/Paul Motian, Further Explorations (Concord)
Dave Douglas, Be Still (Greenleaf)
Frank Kimbrough, Live at Kitano (Palmetto)
Ron Miles, Quiver (Enja)
Jenny Scheinman, Mischief & Mayhem (Jenny Scheinman)
John Abercrombie, Within a Song (ECM)
Best Historical Releases:
Charles Mingus, The Jazz Workshop Concerts, 1964-65 (Mosaic)
Thelonious Monk Quartet, The Complete Columbia Studio Albums Collection (Sony Legacy)
Ella Fitzgerald & Louis Armstrong, Ella and Louis Again (Verve/Analogue Productions, 45rpm, 2LPs)
The Slate column also includes 30-second soundclips from each album. For this blog, I should say something about sound quality, and the remarkable thing is that all the new releases listed here sound at least quite good. Dave Douglas’ Be Still, engineered by Joe Ferla in 24/96 digital, takes the prize, especially the LP pressing (available here). On the mini-list of Historical Releases, the 45rpm LP of Ella and Louis, mastered at Chad Kassem’s fabulous factory, is jaw-droppingly vivid. The 6-CD boxed set of Monk, from Sony, is very good, too. The 7-CD box of Mingus, taken from five live concerts, is uneven: when it’s good, it’s very good; when it’s not, it’s not too bad.
