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A+:

Abyss Diana TC: $5995 as reviewed
The stock, fourth-generation Abyss Diana TC costs $4495; the review sample substituted a 1.8m Superconductor HP cable for the standard 1.5m cable, which can be terminated with three- or four-pin XLRs or a ¼" plug. Using Eleven Audio's Broadway amplifier HR found that the 69 ohm, 90dB/mW-sensitive, 390gm Diana sounded smoother, darker, more luxuriant than the earlier, 50 ohm, 88dB/mW-sensitive, 640gm Abyss AB-1266 Phi TC. Listening to La Guitarra dels Lleons, while the 1266 displayed more of the…

A (RESTRICTED EXTREME LF):

JBL 4329P: $4500/pair
See Tom Fine's review in this issue. (Vol.46 No.10 WWW)

B:

Naim Mu-so 2nd Generation: $1599 with standard grille fabric
This slim, all-in-one, Roon Ready networked music system has a tweeter, a midrange unit, and an oval-shaped woofer for each channel, all powered by direct-digital, class-D amplification. The integral DSP offers three room compensation settings. There is also an alarm and a sleep timer. The major digital streaming services, including Spotify, Tidal, and Qobuz…

Channel D Pure Music software: $129
Pure Music (Mac only) can play sampling rates of up to twice the 192kHz limit of Amarra and Decibel. Like those programs, Pure Music (Mac only) offers memory play, automatic sampling-rate changes, and full compatibility with native FLAC files and in its latest version, DSD files. Going from iTunes to Pure Music, the sonic improvement was modest but worthwhile, with cleaner trebles and improved pitch certainty. Compared with the less expensive Decibel, however, Pure Music lacked some openness and clarity, decided AD. Using…

A:

DaySequerra FM Reference Signature Modification: $3800 (+ cost of tuner) ★
David Day's Signature Mod effectively addresses this ultimate FM tuner's cathode-ray tube's tendency to burn out. Switching circuitry has been added to allow the CRT to turn off when not needed. The Signature Mod also replaces the tuner's incandescent bulb with longer-lasting LEDs, and uses hand-matched, low-group-delay filters for lower distortion and better channel separation. LG noted punchy, quick bass response, a deeper soundstage, and a more transparent midrange. "The new CRT's…

Audio Elegance Furniture : $424-$6329
Audio Elegance's "aesthetically simple, sturdy designs" are available in three lines; in the upper two, Dakota and James River, only select hardwoods, softwoods, and multidirectional plywoods are used. Biscuit joinery is featured throughout, and finishes include catalyzed lacquers and hand-rubbed oils. Prices start at $319 for a Frontier Series amp stand and rise to $4759 for a Dakota Collection LP storage unit. Custom items are also available. (Vol.32 No.2 WWW)

Audio Points by Live-Vibe Audio: $…

AC Nexus Advanced Power Distribution & Ground Enhancement System: $20,000
Steve McCormack, once the proprietor of The Mod Squad, is the man who introduced the concept of accessory isolation feet—his Tiptoes were aluminum cones with flat tops and sharply pointed feet. Now he's brought to market this passive AC-power filter, whose Panzerholz enclosure contains two fist-sized silver-conductor capacitors from Duelund. The IEC AC inlet is a Bocchino Audio Marriner10 and the AC outlets are four Furutech Nano Crystal Formula duplexes. Four Cardas ground…

Acoustic Geometry Small Curve: $399.99 ★
Medium Curve: $449.99 ★
Deluxe Curve, Walnut Frame: $549.99 ★
Deluxe Curve, Red Oak, Stained Black Frame: $549.99 ★
Acoustic Geometry's Curve System comprises Diffusors, Absorbers, and Corner Traps, each 42" high and available in a number of fabric choices. Each model is built on a wooden frame with a wedge-shaped cleat for hanging the product from a matching piece attached to the wall. Diffusors include a Mass-Loaded-Vinyl (MLV) membrane and are intended to control low- and midbass frequencies;…

Audio Research Tube Damping Rings: $5 each
Damping rings for all AR products are now available to the public at large. They're made of a proprietary polymer material that converts kinetic energy to heat, and their improvements are not subtle, exclaims BJR: tighter, cleaner, deeper, more dynamic bass; more coherent transient attacks; crisper, more extended highs; plus "improvements in the reproduction of subtle gradations of low-level dynamics." Give 'em a whirl—the cost is minimal. (Vol.23 No.2, Vol.26 No.8)

AudioQuest binding-post wrench: $17.95…

Analysis Plus Silver Apex Interconnects: $1219.99 (1m pair)
The Analysis Plus Silver Apex uses as its conductor an oxygen-free copper "stabilizing strand" covered with pure silver, in an arrangement the manufacturer describes, somewhat elliptically (haw) as "a hollow oval cable inside a hollow oval cable inside a hollow oval cable," said to be double shielded and thus quiet. And MF found it to be so: In his words, the Silver Apex is "highly recommended!" (Vol.42 No.5)

Audio Art Cable IC-3 Classic: $120/1m pair (RCAs), $140/1m pair (XLRs)
The IC-3—available…

Lenbrook Corp, the privately owned Canadian enterprise whose holdings include NAD electronics, PSB speakers, and Bluesound (the maker of the BluOS music operating software system) has acquired the assets of MQA, Ltd, including MQA technology and the SCL6. The press release announcing the acquisition, which went public September 19 at 8am EDT, notes that the deal "further solidifies Lenbrook's commitment to excellence and innovation in the evolving landscape of audio technology."

The announcement ends months…