fect, Amarra or Pure Music, Strata becomes your entry into the world of high-end digital audio music, both PCM and DSD. Performance is superb at anywhere near the price and there are good reasons why.
Digital Lens inside
All digital input signals are taken into Strata in Native Mode without Sample Rate Conversion (SRC) and fed directly into a simplified FPGA known as a CPLD (Complex Programmable Logic Device), which discovers sample rate and format, reclocks all incoming data, reduces jitter, waveshapes data output to the DAC chip, and utilizes high speed/low gate count logic to reduce propagation delay for faster throughput. This proprietary technology is called the Digital Lens.
The DAC chip itself is based around the acclaimed 32-bit ESS Sabre Hyperstream architecture, the output of which is passively filtered to reduce transient distortion.
Strata DAC’s output stage is a proprietary Class-A configuration, fully balanced and direct-coupled hybrid array with an extended bandwidth of 60 kHz.
I²S is the native format of all CD transports and many servers. I²S features a separate clock and data signal from the source. Typically, this clock and data signal are multiplexed together to be transmitted over a single cable in a format known as S/PDIF (Sony Philips Digital Interface), or AES/EBU (Audio Engineering Society/European Broadcast Union). Once received in multiplexed form, the DAC input must untangle the clock and data and once again separate them. I²S solves the problems associated with unraveling data of S/PDIF and AES/EBU formats.
Strata’s I²S inputs are compatible with our DirectStream Transport and allows full access to the master quality levels found on the locked SACD layer of SACD discs. Only PS Audio DACs, such as DirectStream, and now Strata, are authorized to play the pure DSD layer in all of its glory.
Choice of digital filters
Strata offers the choice of three digital filters for users to select from. Each digital filter has a different sonic character and the choice of filters offers an excellent means of improving system synergy. No filter choice is wrong or right. Instead, each filter can be selected and auditioned by the user to more perfectly match their chosen collection of the amplifier, source, and loudspeaker, as well as personal tastes and biases.
Users can relax and use the supplied remote control to audition each of the three filter choices for best audio quality matching the system it is played on. Should users upgrade their amplifier, speaker or sources at some point, Strata is there to help maximize performance.
Unique to Strata is PS Audio’s newest module, PS Connect. Used in conjunction with the PS Audio Connect app, available on IOS and Android devices, Strata owners can launch into the world of high-resolution streaming. Media with sample rates of up to 192kHz can be streamed directly into Strata’s internal Digital Lens to reduce jitter and improve streaming performance as never before.
PS Connect can stream from popular services such as Tidal, Qobuz, Spotify, Napster, and iHear Radio, as well as any DLNA source on the home’s local network.
Connection to the home network is easy through Strata’s built-in WiFi or Ethernet connection.
The power amplifier plays a critical role in more than just delivering enough power for your speakers. It is an essential component in preserving music’s nuanced details such as overtones from plucked instruments, subtle cues defining placement, depth, soundstage width, and transient decays.
The power amplifier inside Strata loses nothing. Engineer’s Bob Stadtherr and Darren Myers were obsessed with providing a power output stage that could handle any speaker connected to it while lavishing great attention on even the tiniest nuances in the music.
The 200 watt per channel power amplifier inside Strata captures the rich full-bodied essence of recorded music and presents it to your loudspeakers with authority and grace—with never a hint of glare or unnaturalness.
The Analog Cell makes all the difference
The connection between preamplifier and power amplifier is critical, for it is at this junction where most essential musical details are easily lost. Nothing in the design of a power amplifier is more important than its input stage when preserving music’s finest nuances. In Strata, a proven topology called the Analog Cell has been employed to preserve the rich details found in music.
The Analog Cell closely mirrors the warm sonic characteristics of a vacuum tube while maintaining the power and control of the best solid-state amps. The listening experience with Strata starts feet tapping and smiles breaking out.
Strata’s perfected internal connections between preamplifier, Analog Cell, and power amplification stage eliminate the problems normally associated with interconnects and maximizes synergy between internal systems. The sonic benefits of synergy must be heard. Strata’s preservation of the smallest details in reverb, room acoustics, musical overtones; its commanding presence without intrusion; it’s delicate handling of subtle shadings; its authority as it grabs hold of the loudspeaker and breezes through even the most complex musical passages is a joy to be experienced.
Strata’s power amplification stage provides excellent frequency extremes, low distortion, high efficiency, high damping factor, and a generous and powerful output of 200 Watts into the most common loudspeaker loads of 4Ω. Sufficient horsepower for demanding loudspeakers.
Strata has it all. Connectivity, control, power enough for any loudspeaker.