search
The Mk2 features an internal "mechanical crossover" system that addresses frequencies above 100Hz by providing a smooth mechanical pathway for higher frequency vibrations to travel away from critical areas and dissipate. The motor, platter bearing, and armboard are on separate, interlocking plates (think of leaves on a tree, or think of the bearing as the sun, with the motor and armboards as "planets"), precisely mounted within the turntable in carefully optimized locations away from the center to further isolate the stylus/record interface from unwanted, internally produced vibrations (…
The Minus K suspension meant I could pretty much pound on both the HRS platform and the Helix One Mk2's base and hear nothing through the speakers. It's a really effective isolation device! A stethoscope placed anywhere on the 'table revealed zero motor and/or bearing noise.
Explosive, visceral sonics
Not surprisingly, the Döhmann Helix One Mk2's sound was more similar to the Continuum Caliburn's than it was to the TechDAS Air Force One Premium's; the TechDAS sounded smoother and, you might say, more elegant, refined, and relaxed—probably something to do with the air-bearing platter…
Sidebar 1: Specifications
Description: Two-speed, belt-drive turntable. Speeds: 33.3 and 45rpm (78rpm available upon request). Platter: 12" alloy/thermoplastic sandwich, 30lb. Integrated Minus K isolation system.
Dimensions: 23.6" (600mm) W × 18.9" (480mm) D × 9.8" (250mm) H. Weight: approximately 200lb.
Serial number of unit reviewed: DA-1019-058.
Price: $49,000 in black anodized aluminum, $55,600 in plated nickel and titanium finish. Approximate number of dealers: 5. Warranty: 5 years.
Manufacturer: Döhmann Audio Pty Ltd, Unit 2, 11 Friars Road, Moorabbin, Victoria 3189…
Sidebar 2: Associated Equipment
Analog sources: Continuum Audio Labs Caliburn turntable & Castellon stand; SAT CF1-09 and Thrax/Schröder CB tonearms; Lyra Atlas Lambda SL, Ortofon Anna Diamond cartridges.
Digital sources: dCS Vivaldi One SACD player DAC; Lynx Hilo A/D-D/A converter, Roon Nucleus; Pure Vinyl and Vinyl Studio software.
Preamplification: darTZeel NHB-18S, Ypsilon MC-10L, MC-16L, step-up transformers; Ypsilon VPS-100, CH Precision P1 with X1 PSU.
Power amplifiers: darTZeel NHB 468 monoblocks.
Loudspeakers: Wilson Audio Specialties Alexx.
Cables:…
I am the world's worst consumer. Not only have I made more than my share of disastrous purchase decisions, I'm also inexplicably luckless: If there's one defective sample or repack in an inventory, it will find me.
I'm also a deceit magnet, and I'm spineless: More than once in my life, I have made abominable purchase decisions solely to please a manipulative salesman or a disinterested third party (read: girlfriend). There is abundant photographic evidence that I don't know how to shop for clothes, my glasses are wrong for my face because I trust the advice of opticians with bad or no…
Happily, those and similar sounds became more listenable after my first week of daily listening with the Orchestra Black. During that time, I ran it in by playing background music (while I edited other people's copy). Then, while playing the new Blue Note Tone Poets LP reissue of Lee Morgan's Cornbread (Blue Note/Music Matters BST 84222), there came a surprisingly sudden moment when the notes I was hearing simply refused to be ignored: Muzak time was over as the Jadis grabbed my ears and said, "Listen to the timing of [bassist] Larry Ridley! Do you hear the subtle tension he's putting into…
Sidebar 1: Specifications
Description: Two-channel tubed, line-level integrated amplifier. Tube complement: four 6CA7, two 12AX7. Inputs: 5 single-ended line-level (RCA). Outputs: 2 pairs binding posts, 1 pair RCA jacks. Input impedance: >100k ohms. Input sensitivity for nominal output power: 250mV RMS. Bandwidth at –3dB: 5Hz–60kHz. Output power at 1kHz: 40Wpc RMS (16dBW).
Dimensions: 20.7" (530mm) W × 7.8" (200mm) H × 10.5" (270mm) D. Weight: 44lb net (20kg).
Serial number of unit reviewed: 5136. Manufactured in France.
Price: $3995. Approximate number of dealers: 8.…
Sidebar 2: Associated Equipment
Analog sources: Garrard 301 and Thorens TD 124 turntables; EMT 997 tonearm; Ortofon SPU Century and EMT TSD 15 pickup heads.
Digital sources: Hegel Music Systems Mohican CD player.
Preamplification: Auditorium 23 Hommage T1 & T2, Luna Orange, and EMIA Phono step-up transformers, Sentec EQ11 phono preamplifier, Shindo Laboratory Monbrison (2017) preamplifier.
Power amplifiers: Air Tight ATM-300R, Shindo Laboratory Haut-Brion, Shindo Laboratory Cortese.
Loudspeakers: Altec Flamenco, DeVore Fidelity Orangutan O/93, Rethm Maarga.
Cables…
Sidebar 3: Measurements
I measured the Jadis Orchestra Black using my Audio Precision SYS2722 system (see the January 2008 "As We See It").
The Orchestra Black appears to be very similar to the Orchestra Reference Mk.II that Art Dudley reviewed in December 2015. I had various issues measuring the earlier amplifier, including a broken tube, and the fact that as the Orchestra Reference is a fixed-bias design I needed to reset the bias for each of the four new output tubes.
The output impedance was even higher than that of the Reference Mk.II, at close to 3.5 ohms across the…
Specific Live Streams (Scroll down for ongoing series):
Thursday, May 7 10pm EDT: The Noe Music Listening Club features composer Jake Heggie discussing and performing his music and that of his music heroes. Sign up here.
The Metropolitan Opera streams live performances for 25 hours. This week’s schedule is:
May 6 Saariaho’s L’Amour de Loin
May 7 Strauss’s Capriccio
May 8 Puccini’s La Bohème
May 9 The Opera House
May 10 Mascagni’s Cavalleria Rusticana / Leoncavallo’s Pagliacci.
Through May 7…