Tag Archives: PS Audio

Reviews

Ultimate Integrated Amplifier Has It All

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Boulder, Colorado, September, 2024 – PS Audio now offers its Stellar Strata MK2 integrated amplifier, with updated features including a moving-magnet/moving coil phono stage, a built-in improved high-resolution DAC, a Class A analog preamp stage, a headphone output, 150 watts of output power, and more.



Paul McGowan, PS Audio CEO noted, “The Stellar Strata MK2 significantly improves upon the original Strata concept of providing a superb-sounding, versatile high-end integrated amplifier. Designing the Strata MK2 gave us the opportunity to implement our latest technical advancements in an all-in-one audio component that offers exceptional sound, has an attractive, compact design, and is easy to use.”

Analog enthusiasts can now enjoy the benefits of superior vinyl playback, thanks to the PS Audio’s Stellar Strata MK2’s new moving magnet/moving coil phono stage. Two stereo pairs of MM and MC RCA phono inputs are provided, plus two RCA and XLR line-level inputs. The Strata MK2 features fully balanced analog preamplifier circuitry.

It’s equally flexible in accommodating digital sources.

The Strata MK2’s built-in DAC can deliver up to 384kHz digital audio (depending on the source), with native DSD capability up to DSD256. The Strata MK2 includes one optical and two coaxial digital inputs, plus asynchronous USB and two I2S inputs. For headphone listeners, the Strata MK2 offers a top-quality Class A headphone amplifier.

The DAC utilizes PS Audio’s exclusive Digital Lens technology to deliver extraordinary sound quality from any digital source. All digital signals are fed in native mode into the DAC’s proprietary Digital Lens, which recognizes the sample rate, re-clocks the data, reduces jitter, and applies other processing.

The Stellar Strata MK2 is fully balanced from input to output, for extremely transparent, detailed sound quality and ultra-quiet operation. Its Class A preamplifier stage features PS Audio’s exclusive analog Gain Cell variable-gain volume circuitry, which eliminates the sonic degradation that can be caused by conventional volume controls.

A high-current, Class D hybrid output stage with exceptional linearity delivers 150 watts of power (into 4 ohms), to ensure that the most delicate musical details are faithfully conveyed, as well as the most complex orchestral crescendos.

Also available in black.

The PS Audio Stellar Strata MK2 offers a number of additional performance and convenience features. It’s digital filter for PCM sources allows the listener to choose between three settings, to tailor the response to personal preferences and program sources. The Strata MK2 also provides balance and phase controls (the latter for digital sources), input trim for each source, a headphone volume trim control, a USB port for potential future firmware upgrades, and a trigger output.

The PS Audio Stellar Strata MK2 integrated amplifier is currently available in a choice of silver or black finish at a US manufacturer’s suggested retail price of $3,499 usd/ $4,727 cad. Only available via official dealers near you. For the Silo, Frank Doris.

Stellar Strata MK2 Features at a Glance:

Class A balanced analog Gain Cell preamplifier
Moving magnet/moving coil phono stage
Full-function DAC to accommodate up to 384kHz digital audio and native DSD up to DSD256
Three single-ended and balanced analog inputs; moving magnet and moving coil phono inputs; digital inputs including two coaxial, two I2S, optical, and USB (asynchronous to 384kHz)
Digital Lens technology Digital Lens re-clocks incoming data to reduce jitter and provide additional sonic advantages
150 watts per channel into 4 ohms, 100 watts into 8 ohms; high-current Class A hybrid output stage
Built-in Class A headphone amplifier
5- 15-volt trigger output for connection to other A/V system components
21 lbs., 17″ wide by 2.8″ high by 13.5″ deep

Reviews

How This 5000 Dollar Compact Loudspeaker Delivers

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PS Audio Introduces Its Compact, High-Performance aspen FR5 Loudspeaker

– New FR5 stand-mount speaker delivers expansive sound in a room-friendly design

Boulder, Colorado, July 2024 – PS Audio recently announced the introduction of its aspen FR5 loudspeaker, a stand-mounted speaker that delivers the same quality of extraordinary musical realism as the larger aspen Series models, in a compact design that fits easily into smaller and medium-sized rooms.



The new FR5 features a custom-designed PS Audio push-pull planar magnetic high-frequency driver, complemented by a newly-designed midrange/woofer, and a high-excursion passive radiator. Available in satin black or satin white with optional matching stands, the PS Audio FR5 is styled to complement any décor.

Paul McGowan, PS Audio CEO pointed out: “The FR5 was designed to bring the same level of uncompromising sound quality as all aspen Series speakers into any listening environment, and is ideal for living spaces where floorstanding speakers can’t be used. Although it’s small, the FR5 delivers powerful and dynamic sound with extended bass, and will play surprisingly loud even in larger rooms.”

The FR5 measures 14.5 inches high by 8 inches wide by 13 inches deep (28.25 inches high with optional stands). The drivers in the FR5 are purpose-designed by PS Audio and are tuned for optimum performance in a two-way stand-mount configuration. The 2.5-inch planar magnetic ribbon tweeter is the same unit used in all aspen Series loudspeakers. It utilizes a symmetrical push-pull design with a high-strength magnet and a diaphragm made from Teonex® film, a material that provides exceptional clarity, transient response and resolution.

The aspen FR5 features a newly-designed 6.5-inch cast frame midrange/woofer made from Curv woven polypropylene, a material that is drawn into thin monofilaments and woven and reinforced using a proprietary process. The high-excursion driver employs a split-gap magnet structure with dual Faraday rings and a custom suspension. It’s augmented by a rear-firing 6 by 9-inch passive radiator to achieve in-room low-frequency extension down to 30 Hz. Both FR5 drivers are mounted on a thermoset resin front baffle that adds rigidity and minimizes diffraction effects.

PS Audio’s aspen FR5 utilizes a new enclosure technology, with viscoelastic damping sheets between the bracing and cabinet side walls, and around the woofer. This minimizes unwanted enclosure vibrations and contributes to the FR5’s superb imaging and spaciousness. The crossover uses air-core inductors, metallized poly capacitors, and wirewound resistors to ensure maximum sonic purity and seamless driver integration.

The FR5’s simple, elegant design is complemented by its optional matching stand, which has an integrated wire management system and can be mass-loaded. The FR5 comes with magnetically detachable grilles.

The aspen FR5 will be available in August 2024 at a suggested retail price of US $3,499/ CAD $4,771 per pair. The optional stands will be available at US $500/ CAD $682 per pair.

aspen FR5 Features at a Glance:

  • Enclosure type: sealed
  • High-frequency transducer: 2.5-inch planar magnetic ribbon tweeter with Teonex diaphragm
  • Midrange/low-frequency transducer: 6.5-inch cast-frame, Curv woven polypropylene, split-gap magnet structure with dual copper Faraday rings
  • Passive radiator: 6 by 9-inch rear-firing
  • Thermoset resin fiberglass-composite woofer baffle
  • Magnetically-attached grille
  • Custom crossover with premium metallized poly capacitors, air-core inductors and wirewound resistors
  • Frequency Response: 35 Hz – 20 kHz (- 6 dB, half-space; 30 Hz – 6 dB in-room)
  • Crossover Frequency: 1,750 Hz
  • Sensitivity: 83.5 dB
  • Nominal Impedance: 6 ohms (5.6 ohms minimum)
  • Recommended Amplifier Power: 50 – 150 watts
  • Dimensions: 14.5 x 8 x 13 inches (speaker only), optional stand, 28.25 x 11.75 x 14 inches
  • Weight: speaker, 26.6 lbs. (12.1 kg), stand, 13.7 lbs. (6.2 kg)

For the Silo, Frank Doris.

Teonex is a registered trademark of DuPont Teijin Films.

Reviews

Technology Pushing 10,000$ Loudspeaker

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Just in time for audiophile Christmas~
PS Audio Introduces Its aspen FR10 Loudspeaker, Ideal for a Wide Variety of Listening Rooms and Systems — New FR10 floorstanding speaker delivers the sonic magic of the aspen series in a smaller, more affordable form factor —
Boulder, Colorado, December, 2023 – PS Audio today announced the introduction of its aspen FR10 loudspeaker, an elegant, slim 3-way floorstanding tower that brings the extraordinary sound quality and innovative driver design of the aspen series to a wider range of listening environments, systems, and budgets.

The new FR10 (SRP: $9,999 usd / $13,300 cad per pair, available now) features PS Audio’s acclaimed push-pull planar magnetic midrange and high-frequency driver technologies, complemented by ultra-low-distortion, linear-magnet woofers, high-excursion passive radiators, and a host of additional refinements. Like all the models in the aspen series, the FR10 has a sleek, refined appearance.

Paul McGowan, PS Audio CEO noted, “The aspen FR10 embodies more than 50 years of experience in audio in learning what works in a loudspeaker, and what it takes for a speaker to ‘disappear’ in a listening room and deliver a magical musical experience. Our goal with the aspen FR10 was to offer no-compromise full-range loudspeaker performance in a smaller, more affordable form factor that fits easily into smaller and medium-sized rooms.”

All the drivers in the FR10 are custom-designed from the ground up. The 8-inch planar ribbon midrange and 2.5-inch planar ribbon tweeter employ a push-pull design with an identical symmetrical motor structure on either side of their driver diaphragms. This inherently linear configuration provides lower distortion than conventional single-sided magnet structures, along with higher efficiency.

The midrange and high-frequency drivers employ high-strength magnets and diaphragms made from Teonex® film, a thin, highly stable material that provides exceptional transient response and resolution, with a fast, clean decay. The drivers are housed in a sealed sub-enclosure to ensure maximum clarity and freedom from internal cabinet colorations.

The PS Audio aspen FR10 utilizes dual 6.5-inch cast-frame woofers with a non-woven carbon fiber PMI foam sandwich cone, for an articulate response that complements the speed and transparency of the planar-magnetic midrange and high-frequency drivers. The woofers utilize a split magnetic gap with dual copper shorting rings, and have a large 3/4-inch peak-to-peak linear excursion for low distortion and a dynamically responsive bass output. The woofers are augmented by three flat-piston carbon fiber passive radiators. The FR10 offers wide range frequency response from 32 Hz – 20 kHz (- 6 dB, half-space; 25 Hz – 6 dB in-room).

The FR10’s slim enclosure measures 41.5 inches high by 8 inches wide (11.75 inches wide with its stand) by 16.25 inches deep. It’s available in a striking new matte finish in either black or white, and comes with magnetically detachable grilles. The aspen FR10’s room-friendly design makes it easy to set up and enjoy, and the FR10 comes with a handy setup booklet and CD to get the most out of the speaker. The FR10 has a visually distinctive “floating” appearance, with a curved bottom and an anodized aluminum base that is supplied with mounting feet that can be used with either removable stainless-steel spikes, or a soft rubber foot underneath.

The aspen FR10 delivers remarkable loudspeaker performance in every respect, with authoritative bass, an inviting midrange, smooth, extended highs, wide dynamic range, and palpable imaging on a wide and deep soundstage. It’s sure to thrill even the most demanding audiophiles and music aficionados.aspen FR10 Features at a Glance:
Enclosure type: sealed upper midrange/tweeter module and lower cabinet for the woofers and passive radiatorsHigh-frequency transducer: 2.5-inch planar magnetic ribbon tweeter with Teonex diaphragm Mid-frequency transducer: 8-inch planar magnetic ribbon midrange with Teonex diaphragm Passive radiator: three 6 by nine inch flat-piston carbon fiber Woofer: dual 6.5-inch cast-frame, non-woven carbon fiber PMI foam sandwich cone Thermoset resin fiberglass-composite woofer baffle Magnetically-attached grille Computer-optimized custom crossover with premium film capacitors and air-core inductors Polished stainless-steel spikes with soft rubber feet enable a variety of mounting options Frequency Response: 32 Hz – 20 kHz (- 6 dB, half-space; 25 Hz – 6 dB in-room)Crossover Frequency: 550 Hz, 1,750 Hz Sensitivity: 86.5 dB Nominal Impedance: 4 ohms (3.3 ohms minimum)Recommended Amplifier Power: 50 – 125 watts Dimensions: 41.5 x 11.75 x 16.25 inches with base Weight: 75 lbs. (34.1 kg)Teonex is a registered trademark of DuPont Teijin Films.
Reviews

New Charlie Brown Goes To The Nutcracker Christmas Album

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Octave Records Celebrates the Holidays
With Two New Christmas Albums — Charlie Brown Goes to The Nutcracker by Ron LeGault’s jazz quintet, and guitarist Alfredo Muro’s The Spirit of Christmas offer musical holiday cheer in stunning Pure DSD sound–
Boulder, Colorado, November, 2023 – Octave Records warmly invites everyone to celebrate the holiday spirit with two uplifting new releases: Charlie Brown Goes to The Nutcracker by the Ron LeGault quintet, and The Spirit of Christmas by internationally-renowned guitarist Alfredo Muro. Ron LeGault puts a jazz spin on the beloved Charlie Brown soundtrack music and the holiday classic The Nutcracker, while Alfredo Muro brings a heartfelt intimacy and virtuoso performances to a wide range of seasonal favorites. Both albums are recorded with extraordinary sound using Octave Records’ exclusive Pure DSD high-resolution audio process.

Pianist Ron LeGault has been performing his Charlie Brown Goes to The Nutcracker show to packed audiences at the St Julien Hotel in Boulder, Colorado for more than 10 years. “The band and I have wanted to capture the show for posterity, and Octave Records gave us the opportunity. We are thrilled to be able to present this music for everyone to now enjoy.” Recorded live in the studio, the album captures the confident yet relaxed interplay that only comes from years of playing together, with Ron joined by Andrew Vogt (tenor sax, baritone sax, clarinet, flute), Curtis Fox (trombone), Dave Weinand (bass) and Andreas Schmid (drums).The quintet performs a host of Charlie Brown tunes like the familiar “Linus and Lucy,” the “Charlie Brown Theme,” “Christmas is Coming,” and others, along with jazz-laced versions of pieces from The Nutcracker including the iconic holiday classic “Dance of the Sugar Plum Fairy.” Added to the mix, the quintet plays a wry, swinging take on “You’re a Mean One, Mr. Grinch.”Alfredo Muro is a concert guitarist, composer, arranger, and improviser. He’s been described as a Latin guitar virtuoso, yet his styles and tastes are far more wide-ranging, from the classical repertoire to folk, jazz, Brazilian and more. He noted, “The idea of the program presented on The Spirit of Christmas was to choose traditional Christmas themes, combined with Christmas music popular in Spain and South America. Many of those songs are connected to my heart – they are part of my childhood in Latin America.”

The selections range from holiday standards like “Silent Night,” “The Christmas Song” and “White Christmas” to spiritual works such as “Jesus Bleibet Meine Freude” (“Jesu, Joy of Man’s Desiring”) and “Ave Maria, and songs that are deeply personal to Muro including “Preludio de Adiós” and “El Noi de la Mare.” Muro’s Paco Santiago Marin classical guitar has a deeply rich tone with a wide color palette and superb dynamic nuances, all captured in remarkable fidelity. On “Villancico de Navidad,” Alfredo is joined by guitarists Robert Chirico, Adam Buer and Felicity Muench and bassist Allen Bossard, to close The Spirit of Christmas on a beautiful and graceful note.

The albums, available on disc or via download, were recorded, mixed and produced by Paul McGowan at Octave Records’ studio, with assistance from Jessica Carson, Alfredo Muro, Ron LeGault, and Terri McGowan. Both albums were mastered by Gus Skinas. Charlie Brown Goes to The Nutcracker and The Spirit of Christmas feature Octave’s premium gold disc formulation, and the discs are playable on any SACD, CD, DVD, or Blu-ray player. They also have a high-resolution DSD layer that is accessible by using any SACD player or a PS Audio SACD transport. In addition, the master DSD and PCM files are available for purchase and download, including DSD 256, DSD 128, DSD 64, and DSDDirect Mastered 352.8 kHz/24-bit, 176.2 kHz/24-bit, 88.2 kHz/24-bit, and 44.1 kHz/24-bit PCM. (SRP: $19usd – $39usd, depending on format.)

About PS Audio
Founded in 1973, PS Audio has earned a worldwide reputation for excellence in manufacturing innovative, high-value, leading-edge audio products. Located in Boulder, Colorado at the foothills of the Rocky Mountains, PS Audio’s staff of talented designers, engineers, production and support people build each product to deliver extraordinary performance and musical satisfaction. The company’s wide range of award-winning products include the all-in-one Sprout100 integrated amplifier, audio components, power regenerators and power conditioners.
 
www.psaudio.com
Reviews

PS Audio Is Now Shipping Its Impressive Music Streamer

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 – Versatile music streamer offers exceptional sound quality and easy setup –
Boulder, Colorado, September, 2023 – PS Audio is now shipping its AirLens music streamer, designed to deliver the ultimate in sound quality from streaming audio sources. The new AirLens (SRP: US $1,999.00 / CAD $2,709 ) offers high-resolution streaming via Roon and services such as TIDAL, Qobuz, Spotify, JRiver, and Audirvana, as well as from an NAS storage device or any DLNA-compatible server.

“The secret of the AirLens’ exceptional sound quality is its galvanic isolation,” noted Paul McGowan, PS Audio CEO. “Removing the physical connection between input and output stages eliminates the unwanted noise that can be introduced by USB, Ethernet or Wi-Fi. The AirLens also perfectly re-clocks the digital signal. The result is a remarkable improvement in resolution, timbral realism, and dynamics.”

The PS Audio AirLens connects to a network via Ethernet or Wi-Fi, and provides I2S and coaxial digital outputs to connect to a DAC. Typically, noise from any number of sources including a computer, long runs of Ethernet cable, EMI interference via Wi-Fi, and modems and routers all contribute to increased jitter and a loss of fidelity. PS Audio’s galvanic isolation removes this sonic degradation by eliminating the electrical connection between the input and output stages, using only air as the interface. This ensures 100 percent isolation and noise-free delivery of the digital audio signals. In addition, the signal is re-clocked at the output stage for jitter-free, pure digital audio.

Available in silver and black, the AirLens offers PCM decoding up to 352.8 kHz, and DSD to 256 (4x). Its compact size (10 by 7 by 1.5 inches) and sleek design make it easy to integrate into any audio system. Like every PS Audio product, the AirLens is manufactured using premium-quality parts and construction.

AirLens Features at a Glance:

Galvanically isolated from input to output to eliminate network and Wi-Fi noise and offer extraordinary signal purity and sound quality. Connects to a network via 10/100/1000 Ethernet or 2.4 and 5 GHz Wi-FiI2S and coaxial digital outputs. Offers PCM up to 352.8 kHz/32-bit and native DSD up to 256 (4x, up to DSD 128 via coax output)DoP (DSD over PCM) operation. Roon-ready, DLNA-ready, compatible with TIDAL Connect (via Roon), Spotify Connect, mconnect, Qobuz (via Roon and mconnect), Dropbox (via Roon), MQA, DLNA 1.5 and UPnP A/V 1.0 Digital Media Renderer. Available in silver or black10″ x 7″ x 1.5″, 4.8 lbs.

About PS Audio

Founded in 1973, PS Audio has earned a worldwide reputation for excellence in manufacturing innovative, high-value, leading-edge audio products. Located in Boulder, Colorado at the foothills of the Rocky Mountains, PS Audio’s staff of talented designers, engineers, production and support people build each product to deliver extraordinary performance and musical satisfaction. The company’s wide range of award-winning products include the all-in-one Sprout100 integrated amplifier, audio components, power regenerators and power conditioners.
Art

Stereo Equip Manufacturer Opens Record Studio To Level The Field

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It’s been nearly two years since we moved into our new digs in Boulder, Colorado. The most exciting part has been watching our recording/mastering studio, led by engineer Gus Skinas, come to life. Gus is a close friend and one of the nicest and most humble gents around. The world knows Gus from his work on projects for Pink Floyd, The Rolling Stones, Stevie Wonder, Elton John, Al Kooper, George Harrison, Queen, Joni Mitchell, Chick Corea, Frank Zappa, and The Police (to mention a few). His talent is unmatched, and we’re proud to have him in the hi-fi family.



A few days ago, we made a big step forward. With Gus at the helm, PS Audio has launched our much-anticipated music label: Octave Records.

Almost every time I give a tour at the new facility I get questions about Octave. With hundreds of labels out there, what makes Octave different? You and Paul make components, why the expansion into recording? Are you just doing this because it’s cool?

Guilty as charged!

In truth, we started Octave Records for the same reason we design audio components—because we know we can make a difference. We know we can produce albums with superior sonic quality and we also remain keenly aware of the challenges faced by so many music creators. Labels have been known to sacrifice quality for profits and for mass-market appeal. For albums-sold, most labels compensate artists with pennies on the dollar. Oftentimes, labels insist on owning the artist’s music. We believe the music deserves high-quality presentation and that the artists deserve to be honored for their contributions. It’s the artists, after all, who give rise to our entire industry.

So we decided to build a label the way we think it ought to be. Octave Records uses the finest studio equipment, all centered around the acclaimed Sonoma DSD recording, mixing and mastering system. We asked Gus to personally craft each recording. And to better support musicians, Octave Records covers 100% of the studio, mixing, mastering, production, distribution and marketing costs. We also provide artists with a direct-share of retail revenues, which are ten to twenty times that of other labels. At Octave Records, the artists own their music, and we give them creative control. They’ve earned it…and we get to enjoy the fruits of their labors on our hi-fi systems!

“Along with our dedication to producing the best-sounding recordings available today, Octave Records offers a different kind of business model,” said Paul McGowan, PS Audio CEO. To support musicians, Octave covers 100% of all studio, mixing, mastering, production, distribution and marketing expenses so that artists may directly share in retain sales revenues – while also retaining ownership of their music.”



It’s with great pride that we announce the first album from Octave Records: Out of Thin Air, a solo piano performance from renowned pianist Don Grusin.



Offered in SACD, native DSD (DVD-Audio) and CD formats, you can learn more about Octave Records and listen to samples of Grusin’s new album here https://www.psaudio.com/products/out-of-thin-air/ If you are interested in picking up a copy of this limited edition, they are available with world-wide distribution (direct from us in Boulder), however, this album is not available for digital download at this time.

I hope you enjoy listening to the album as much as we have enjoyed making it. This is the first of many. For the Silo, Scott McGowan.

Reviews

PS Audio Shipping New Stellar™ M1200 Monoblock Power Amplifier

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Boulder, Colorado, May, 2020 – PS Audio recently announced it is shipping its new Stellar M1200 Power Amplifier. Designed to deliver extraordinarily clear, detailed and musically accurate performance, the monoblock M1200 features an all-new hybrid design that combines a tube input stage with a customized ICE Edge output stage and delivers 1200 watts (into 4 ohms, 800 watts into 8 ohms), to effortlessly reproduce the most dynamic musical passages as well as the subtlest musical details.
 
The M1200 was designed by Darren Myers, the engineer who created the acclaimed Stellar Phono stage and other PS Audio products. The M1200 employs a 12AU7 vacuum tube at its input, chosen for its optimum gain and voltage characteristics in the circuit, and for its ability to preserve the most delicate nuances of the amp’s input signals. The 12AU7 is the identical tube used in PS Audio’s flagship BHK Signature amplifiers, chosen after extensive listening and performance tests.
 
The ICE Edge output stage is a new type of high-current Class D design, offering extremely low total harmonic and intermodulation distortion with high headroom and linear performance across the frequency range. As Darren Myers explained, “other output modules can exhibit non-linear phase and impedance issues at the frequency extremes. The ICE Edge design eliminates these problems thanks to patented circuitry and feedback techniques.” Myers continued, “Although it can deliver massive amounts of clean power into even the most demanding loudspeaker loads, the M1200 sounds equally good at lower volumes.”
 
Like every PS Audio product, meticulous attention has been paid to parts quality and construction. The M1200 has a sleek, elegant appearance that matches other Stellar Series components and is available in silver or black.
 
The PS Audio Stellar M1200 Power Amplifier will be available in June 2020 at a US manufacturer’s suggested retail price of $5,998 per pair. Pre-orders are currently being taken.
 
M1200 Features at a Glance: Zero-loss vacuum tube input stage and custom ICE Edge output stage. Fully balanced circuitry, RCA single-ended and XLR balanced inputs. 1200 watts RMS into 8 ohms, 600 watts into 4 ohms, stable to 2 ohms. Greater than >1100 damping factor for exceptional loudspeaker control. High-efficiency operation. Dual, solid copper, plated output binding posts facilitate bi-wiring, 12-volt input trigger, 27 lb. each; 17″ wide by 3.75″ high by 12″ deep (13″ with connectors)

About PS Audio
Founded in 1973, PS Audio has earned a worldwide reputation for excellence in manufacturing innovative, high-value, leading-edge audio products. Located in Boulder, Colorado at the foothills of the Rocky Mountains, PS Audio’s staff of talented designers, engineers, production and support people build each product to deliver extraordinary performance and musical satisfaction. The company’s wide range of award-winning products include the all-in-one Sprout100 integrated amplifier, audio components, power regenerators and power conditioners.
 
www.psaudio.com
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