Blue Echo Solutions, Inc., 5700 100th Street SW, Suite 330-192, Lakewood, WA 98499. Tel./Fax: (800) 723-2304. Web: www.blueechosolutions.com.
Gefen Inc., 20600 Nordhoff Street, Chatsworth, CA 91311. Tel: (800) 545-6900, (818) 772-9100. Fax: (818) 772-9120. Web: www.gefen.com.
Neptune Audio, 2790 Loker Avenue W., Suite 106, Carlsbad, CA 92010-6613. Tel: (760) 431-8159. Fax: (760) 431-5077. Web: www.neptuneaudio.net.
Oppo Digital, Inc., 2629 D, Terminal Boulevard, Mountain View, CA 94043. Tel: (650) 961-1118. Fax: (650) 961-1119. Web: www.oppodigital.com.…
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Sidebar 1: Contacts
Sidebar 2: Recordings In The Round
J.S. BACH: St. John Passion, BWV 245 (1725 version)
Soloists, La Furia vocal ensemble; Concerto D'Amsterdam, Nico van der Meel
Quintone Q08001 (2 SACD/CDs)
Here is a lovely SACD from a new label, Quintone (www.quintone.nl), based in the Netherlands. The things that impress me about it include the warm yet detailed sound of these small ensembles, recorded in a Rhoon church. The ambience is rich and almost pervasive, but with no loss of immediacy in the voices and instruments. The performance is similar to and can be contrasted with the…
It says something for the state of technology that, after a quarter of a century, there still is no authoritative explanation for why so many high-end audiophiles prefer tubes. Tubes not only refuse to die, they seem to be Coming back. The number of US and British firms making high-end tube equipment is growing steadily, and an increasing number of comparatively low-priced units are becoming available. There is a large market in renovated or used tube equipment—I must confess to owning a converted McIntosh MR-71 tuner—and there are even some indications that tube manufacturers are improving…
Both preamps are nicely styled and have good basic features. The Audio Research SP-10, however, wins hands-down on ergonomics. You have switchable gain, a choice between two turntable inputs or Mute at the phono stage, and switchable cartridge loading. For most high-end audiophiles these are useful controls. The Conrad-Johnson combination has a slight advantage because its balance control is infinitely variable while the Audio Research control is stepped-and yes, dammit, there are times when the ARC's balance switch won't "lock in" at just the right place.
Both units are big and involve…
Anthony H. Cordesman followed-up his SP-10 review in December 1984 (Vol.7 No.7):
Audio Research hasn't formally changed the model designation on one of high-end audio's greatest status symbols, nor have they raised the price. They have "only" improved the phono section of each channel, improving that already-superb preamp so much that I felt justified in adding my own "II" to the model number. And you can convert your existing SP-10 for a quite reasonable $100–$150.
Now, let me whet your appetite: the improved phono stage of the SP-10 is superb. I won't go quite as far as…
Anthony H. Cordesman wrote again about the SP-10 in November 1986 (Vol.9 No.7):
The sound of the Convergent Audio SL-1 is very good indeed (as it should be at $3495)—good enough that it can probably be best reviewed by comparing it to its top competition. The Audio Research SP-11 and SP-10 are obvious standards of reference in tube design, and the original and revised Motif MC-7 are good transistor standards of comparison.
Bass: The original Motif MC-7 had excellent bass and lower midrange, with an emphasis on control rather than sheer bass power and dynamics, and the revised MC…
Sidebar: Specifications
Description: Tube preamplifer with separate power supply. Individual input for two phono sources, auxiliary inputs for tuner, aux, 2 tape loops. Full switching amongst left, right, stereo reverse, and mono. Mute switch. Switch to remove 12dB of gain. Switch to connect phono directly to volume control, bypassing all extraneous circuitry and switching.
Serial numbers: 92426032 and 92427030, 6312700S and 63126004 (both power supply and control unit have individual serial numbers).
Price: $3700 (1984); no longer available (2009).
Manufacturer: Audio Research…
My reviews always begin in bizarre ways. Take David Manley...please! (Just kidding.) On the last day of Winter CES 1995, I found myself towing a tuckered-out JA to a few final rooms. (This was just after the January '95 David Manley/Dick Olsher tube-rolling brouhaha, footnote 1, regarding who should do what to whom, and with which particular tube.) So as we passed Manley's room, John Atkinson thought to stick his head in (the noose) and say hello.
Of course, David Manley had plenty to say, but as we spoke I didn't realize I was standing in one of his ManleyClan® Audio Traps. You…
Output tubes are 10 "Russian uprated 6550s" per side, with no further details of their origin to be found in the manual. "We strongly emphasize that only the Russian 6550s should be used in this amplifier...they have been thoroughly optimized around this tube. Use of unapproved tube types can and will void your warranty." You've been warmed...(tube joke). I reviewed with the tubes supplied, with nary a thought of replacing them. Really.
The input of each 440 consists of a single 12AT7 dual-triode, with the driver stage made up of a pair of 6414s (an American military version of the…
The 1 2 3 speaker cable, so named because it's configurable for single, bi-, or tri-wired setup, is multistrand, uncoated, oxygen-free copper as well. The wire has a polyethylene dielectric, and it's wrapped around a hollow polyethylene tube, then PVC-jacketed. They're unshielded because, according to Joe, "the signal is pretty strong at that point, and we find that even in 45' runs some of our customers use in New York City, there's no RFI." The cables are $320 for an 8' pair, and bi- and tri-wired sets cost the same, with no additional cost for termination. A Signature speaker cable will…