CES 2013 & T.H.E. Show
CES & T.H.E. Show Report 2013
Coverage By Steven R. Rochlin
Atma-Sphere Music Systems
has introduced their Mark 3.2 lineup, the company's first major design revision in over three years! New noise reduction techniques, increased filter capacitance in the driver stage, AC line filtering, isometric transformer mounting, and a more sophisticated grounding topology are just a few of the improvements they have accumulated since the last revision. Because of point-to-point build techniques, hardware updates are available for all models, past and present. All amplifiers in this new Mark 3.2 version include:
• Balanced Differential Design
• Class-A operation
• Patented Circlotronic direct-coupled (OTL) output stage
• Dual-mono chassis construction
• Automatic bias - no adjustment needed
• Built in VU meter for tube and output monitoring
• Easily monostrapped for greatly increased power
• Uses only one gain stage for supreme clarity of sound
• Proprietary precision components used throughout
• Low-noise "star" grounding topology
• Fully hand-wired point-to-point electronics - no circuit boards
• Stable with all input and load conditions
• Exclusively uses Octal-Triode based vacuum tubes
• Classic open chassis construction with Wrinkletex finish
• Three-year general coverage warranty, one year warranty on output tubes
The Atma-Sphere MA-1 MK 3.2 ($16,200 / pair) OTL amplifier builds on the advances of their decades-proven technology.
An improved output section and enhanced driver circuit contribute to superior low-level detail,
smoother sound, wider bandwidth and AC power immunity. The new, rugged, non-magnetic chassis
features classic looks with superior layout. Setup of the amplifier is simple with it's automatic tube
biasing system. Even the controls and switches are ergonomic without sacrificing performance.
The MA-1 is extremely user-friendly with normal operation easy on the vacuum tubes; with the effect of a tube failure on the unit being entirely inconsequential. New custom wire, V-Cap Teflon coupling caps, custom resistors, and all the
other 'extras' are included. Specifications are as follows:
Output power is 140 watts per channel into 8 Ohm load, 135 into 4 Ohm load
Input Impedance is 100 kOhm single-ended, 200 kOhm balanced
Output Impedance: ~2.3 Ohm (power method standard measurement)
Input: 2.8 V sensitivity, RCA and XLR true balanced input
Tube complement (per channel): Fourteen 6AS7G output tube, five 6SN7 driver tube
Gain: 25dB (for 8 Ohm)
Power Bandwidth: 2 Hz to 75 kHz
Dimensions (per chassis): 18" deep x 17" wide x 8.5" tall
Weight (per chassis, without tubes) 36 lbs.
Atma-Sphere's MA-2 MK 3.2 ($41,600 per pair) was the largest production triode amplifier and the largest
production OTL in the world for nearly 12 years! The Atma-Sphere MA-2 Mk 3.2 is, according to the company, "one
of the finest amplifiers made anywhere in the world, regardless of price. Not only is it one of the
most powerful production Output Transformerless amps available, it is also one of the most
reliable. Though audio purists have craved the design features of this amplifier since the beginning
of Hi-Fi, only Atma-Sphere has successfully put them all in the same place at the same time." The Mk. 3.2 version boasts
an improved gain stage with wider bandwidth and greater transparency than previous versions. There is an added switchable feedback and automatic tube
biasing to round out the package. MA-2 specifications are as follows:
Output power: 220 watts per channel into a 4, 8, or 16
Ohm load before clipping
Input Impedance: 100 kOhms single-ended, 200 kOhms balanced - selectable to 600
Output Impedance: ~1.75 Ohms (open loop)
Input: Selectable up to 600 Ohms, 2.8 V sensitivity, RCA and XLR true balanced input
Tube complement (per channel) Twenty 6AS7G output tube and six 6SN7 driver tube
Power Bandwidth: 2 Hz to 100 kHz
Dimensions (per chassis): 28" deep x 17" wide x 10" tall ( 71 x 43 x 25 cm )
Weight: 103 lbs.
is showcasing their new Foundation ($6,500), which is the latest in a long line of state-of-the-art A/V processors. Featuring the latest digital connectivity, the Foundation also maintains Krell's exacting standards for analog audio reproduction. From decoding the latest lossless audio formats, extensive digital switching, 3DTV pass-through, and more, the Foundation is fully compliant with the digital age. Yet the 7.1-channel processor also features balanced audio outputs, automatic setup and room EQ, and Krell's legendary robust hardware. A slim new form factor exudes the Krell aesthetic, while allowing placement in smaller equipment racks. In addition to 10 HDMI 1.4a inputs, the Krell Foundation has two HDMI outputs, both of which feature Audio Return Channel. With ARC, a display device is able to send audio back down the HDMI cable to the processor. This is beneficial for those with televisions with built-in web streaming capability like Netflix or Pandora, so the streaming audio can use the full home theater system instead of just the TV's speakers. The Foundation naturally allows you to take advantage of audio soundtracks, with decoding of Dolby Digital, Digital Plus, Dolby TrueHD, DTS, DTS-ES Discrete, Matrix, and DTS-HD Master Audio. In addition, a full suite of post-processing modes are included, including Dolby Pro Logic IIx and DTS Neo 6. Krell's proprietary surround modes, Party, General Admission, Front Row, and On Stage, offer a different way to listen to favorite tracks. The Foundation also features Krell's Automatic Room Equalization System (ARES), to ensure the best possible performance from every room. To allow full integration into a home automation system, the Foundation has Ethernet control, RS-232, 4 12v triggers (email@example.comA and 2@60mA), and
Krell Industries also announced their Connect ($2500 for digital only and $3500 with optional 32-bit ESS Sabre DAC DAC), a high-resolution audio streaming technology that handles everything from FLAC to WAV, MP3 and WMA. The Connect plays back up to 24-bit/192kHz audio plus Internet radio. The USB and Wi-Fi-equipped Connect is available in two forms: digital only, or with a built-in Digital-to-Analog Converter (DAC) module. The DAC-equipped Connect has a 32-bit ESS Sabre chipset with discrete, direct-coupled analog circuitry outputting via RCA or balanced audio outputs. The digital-only version has both coax and
TosLink optical outputs. "We wanted to offer our exacting customers a streaming audio product that lived up to our high standards," said Bill McKiegan, Krell President. "From the Krell-tuned DAC to the easy-to-use interface, the Connect is the pinnacle of network streaming audio gear." Extensive audio libraries are easy to navigate via the Connect's built-in 3.5-inch QVGA LCD screen. Alternately, full-featured iOS and Android apps offer full control from anywhere in the home. In addition to playback of FLAC and WAV files up to 192kHz/24-bit, the Connect also streams Ogg, WMA, and MP3. Unlike some music streamers, gapless playback is possible, allowing for no breaks between album tracks. Live concert albums, for example, can be played as a seamless, uninterrupted experience. Internet radio with Vtuner gets the same conversion as the high-resolution files (on DAC-equipped models), providing the best possible sound quality from online streaming
Boulder Amplifiers announced their new 3060 ($115,000) Class A ultra-reference stereo amplifier at CES 2013. Weighing in at a hefty 450 lbs. and producing 900 wpc, the 3060 is the largest and most powerful stereo amplifier ever released by Boulder. All audio circuitry within the 3060 is linear Class A, primarily derived from Boulder's 3050 monoblock amplifier. Bias current is actively monitored and adjusted in order to increase efficiency and reduce wasted radiated heat energy. The 3060 utilizes 120 output devices to generate power output of 900 watts per channel into any load. The Boulder 3060 is capable of immense current swings, enabling the amplifier to drive any loudspeaker. Note that units will only be shipped operating at 240V AC mains feed (no 100V or 120V units will be produced) in order to guarantee full-rated power output. A complete array of protection and status monitoring circuits are continuously active. All metalwork is cut on Boulder’s own CNC machining centers and features the distinctly modern, angled appearance unique to all 3000 Series products. A black granite and stainless steel platform is cut and polished to match the angled surfaces of the amplifier and is shipped with each 3060.
Audio has three new products here at CES 2013, the 752BD Universal Upsampling Blu-ray player plus receivers 751R 7.1, 651R and 351R. Their 751R and 651R are 7.1 audio/video receivers whilst the 351R is merely a 5.1 unit. The new Azur 752BD universal upsampling Blu-ray/DVD/CD player is the best unit from the company to date! The 752BD also plays just about every digital file you can throw at it, and accesses network streaming services too. From memory sticks and portable hard drives, smartphones and tablets, or via set-top boxes and games consoles, the 752BD can handle it. It can easily access your harddrives, laptops and desktop machines via Wi-Fi/Ethernet. There is also support for Internet streaming services such as YouTube and Picasa.
Of course this being Las Vegas, you also get some interesting twists on things. Here we have the new
mini surround sound home theater essentially in your head. Two new items, Moonlight Studio Monitor circumaural ($350), noise isolating headphones and Doby Pro headphone amplifier ($100). This is claimed to be the world's first headphone amplifier to utilize Dolby 5.1 surround sound. The integration of 5.1 surround sound technology with Spider's mobile amp device allows for 10 hours of battery life. The Moonlight Studio Headphone is Spider's flagship for the most demanding home listeners. Premium leather
ear pads with memory foam and an all-aluminum housing and light-weight frame create hours of listening comfort. Superior isolation and noise-canceling ensure a quiet environment with full audio spectrum reproduction from the 10 Hz to 26
America's new Reference 501 Series includes the UD-501 DSD 5.6MHz/PCM 384kHz capable dual monaural DAC. TEAC's new UD-501 is the star of the 501 series with support for DSD 2.8/5.6MHZ file native playback by ASIO 2.1 or DoP methods or up to 32-bit/384kHz PCM. Teac also packed this unit with two 32-bit BurrBrown DACs per channel and JRC MUSES op amps, dual monaural design, fully balanced XLR. The AI-501DA integrated power amplifier with 192kHz USB digital audio inputs and low power consumption is the powerhouse of Teac's new 501 series. Hosting a BurrBrown PCM5102 D/A Converter, USB connectivity, Class-D ABLETEC Norway amplifier and a toroidal-core power transformer makes the AI-501DA a key component for the 501 series or any other two-channel audio system. Teac's PD-501HR is a high-quality disc player with 5.6MHz DSD file native playback and up to 24-bit/192kHz PCM on recordable DVD discs. Featuring unique VACS (Vibration Acoustic Control Structure) to control vibrations plus separate power supplies for analog and digital sections. Lastly, Teac's HA-501 is a fully analog, dual monaural headphone amplifier operating in Class-A. The HA-501 features and adaptable options including DC Servo Technology, Switchable damping Factors, High Output Power, and a large Toroidal-Core Power Transformer. The unit produces 1400 mA/ch (32 Ohm loaded) to drive high impedance headphones as high as 600 Ohms.
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