Sprout100 is the all-new, heavily-updated replacement for the original PS Audio Sprout. Many improvements have been made: we doubled the output power, we fully redesigned the headphone amplifier, and we included Stereo-RCA analog in/outputs, a DAC that decodes full resolution PCM & DSD, a subwoofer output, and a sleek, brushed aluminum remote control. Sprout100 is identical to the original PS Audio Sprout in many ways as well: size, shape, look and feel. Materials of machined and bead-blasted aluminum. Real walnut. And all the sound quality you have come to expect from PS Audio.
Scott McGowan grew up at the PS Audio factory, sharing his father Paul’s love of music and high-end performance audio. But he disliked the complexity, cost and tangle typical of Audiophile systems. Why couldn’t he have the performance levels of his father’s creations packaged in a single, beautiful product he and his friends could afford to own? It should be powerful yet simple to operate. Its aesthetics should be inspired by the “less, but better” designs of Braun’s Dieter Rams and Apple’s Jony Ive. He would call it Sprout.
Sprout100, the newest edition of the beloved original, is a simple, elegant source of music for those who want quality sound without the hassles that come with it. Appealing to the eye and ear, solid and reassuring to the touch, Sprout’s user interface is human, providing visual and audible feedback to the user and connecting her to the music. Sprout’s ease of use makes it appealing and accessible to music lovers around the world. It features a phono preamplifier for vinyl, a Bluetooth receiver for music streamed from smartphones, a high-quality hi-res DAC to handle anything stored on a computer, enough power for any speaker, and a headphone amp that drives even the toughest loads.
Sprout is for those who care about their home, their music, and their enjoyment of music in their home. We believe there are a lot of such folks out there.
Passive EQ moving magnet phono preamplifier
Vinyl is an important part of a growing number of people’s lives today and Sprout100 brings LPs to life as you have rarely experienced. The engineering team at PS Audio has been designing and building vinyl amplification for 4 decades and we know a thing or two about making records sound their best. Within Sprout100’s compact enclosure lies a rich history of audio technology, waiting to be told. Are you a soldier in the Vinyl Revolution? Sprout100 offers a world class phono stage to bring your favorite vinyl, new or classic, to life. We engineered a brand-new hybrid circuit design for the best possible vinyl reproduction. We incorporated a JFET input stage to lower noise and increase headroom. We designed a passive high-frequency RIAA circuit for extended and nuanced high-frequency response. These features culminate the very best of our 44 years’ experience with the phono stage.
High-resolution digital audio
Built inside Sprout is a highly sophisticated Digital To Analog Converter (DAC). Optimized to the cutting edge of digital playback, Sprout100 employs an ultra high-resolution ESS Sabre DAC (9016) with USB-B input that accepts resolutions up to PCM 384/24 and DSD128: bit-perfect playback for your high-rez computer audio, video, and gaming applications. An optical (toslink) input allows you to incorporate a TV or other modern digital device with your kick-ass new system. Bluetooth offers versatility, convenience, and one-touch access to a world of content.
The original Sprout’s 50WPC into passive loudspeakers are incredible to hear. With this wattage the original Sprout urged The Absolute Sound to feel “astonished by the detail and richness of its presentation.” Customers agreed, and PS Audio toiled on. In pursuit of an effortless listener experience, the all-new Sprout100 doubles the output power of it’s predecessor. We incorporated bleeding-edge ICEpower amplifier technology to equip the instrument with 100WPC RMS (peaks of up to 135WPC). This increase in output wattage–apart from providing renewed efficiency, lowered distortion, and greater separation and detail–also serves to galvanize the sonic benefits of extended headroom. Sprout100 fundamentally enlivens the listener’s bookshelf or floorstanding loudspeakers to a revolutionary musical experience.
Selected for its musical virtues, Scott McGowan personally curated this Scandinavian-designed amplifier from among a dozen fine candidates before selecting it for Sprout100. Musical, powerful, never aggressive sounding, the amplifier within Sprout100 honors the music.
Stream right from your phone
Streaming music from a mobile device is common and expected among Sprout owners. That the sound quality of that streaming service is exceptionally good in Sprout is a testament to PS Audio’s engineering team’s decision to pass streaming services through Sprout’s internal ESS Saber 9016 high-resolution DAC.
Connect to anything
Upgraded from a pair of 3.5mm jacks, Sprout100’s analog inputs exhibit stereo RCA connections which serve to welcome legacy devices like classic video game consoles or an open-reel tape deck. If you so choose, preamp Sprout to your external amplifier.
Add a subwoofer
Sprout100 betters its predecessor with the introduction of a built-in subwoofer output (mono RCA, variable). Add all the rumble you want with the powered subwoofer of your choosing.
Discrete zero impedance headphone amp
Listening to music through a fine set of headphones is an experience many of us cannot be without and Sprout100 honors the music with one of the finest headphone amplifiers made. Conventional headphone amplifiers focus on lowering output impedance at the expense of temporal accuracy. To solve this problem, PS Audio engineered a new low-impedance Z feedback circuit to drive virtually any pair of headphones you can throw at it with perfect transient impulse response. Slew rate, the ability of an amplifier to reproduce transient musical information, is critical to the lifelike presentation of sound. The human ear reacts instantly to temporal shift. We rely on this sensitivity to realize our setting and the movements around us. Paying keen attention to phase shift and temporal accuracy, Sprout100’s headphone amp slews at an unheard-of 1,300-volts/microsecond–100 times faster than that of its predecessor–producing lucid spatial detail and acute tonal retrieval. The same Z Feedback topology that delivers stunning clarity also enables commanding noise immunity. Listen at low levels or high.
Sprout100 keeps the positive feel of its two, machined, front panel controls while adding the convenience of a beautiful new remote control that comfortably fits in the palm of your hand.
Unit Weight2.9 lbs [1.3 kg]Unit DimensionsWidth 6.2", Height 1.9", Depth 8.2" (chassis only, not including knobs) or 9.2” (including connectors and knobs)Shipping Weight5lbs [2.2 kg]Shipping DimensionsWidth 10.5", Height 5", Depth 14"
Voltage Options100-240 VAC, 50-60Hz, Auto-DetectPower Consumption280W MaximumMains Power InputIEC C14
Phono Audio Input
Connector 1 Stereo Pair, Phono RCACartridge typeMoving MagnetCartridge Output3mV-10mV (5mV recommended)Cartridge Loading47KΩ (100pF)EQ TypeRIAAGain+40dBS/N ratio>84dB A-weighted (analog output)
Analog Audio Inputs
Connector 1 Stereo Pair, Line Level RCAMaximum Input level2.1VRMS (+6.44dBV)Input impedance 10KΩ
Analog Audio Output
Connector 1 Stereo Pair, Line Level RCAOutput level, maximum3.0VRMS (+9.5dBV)Output Max Gain (using Analog Inputs)8.45dBS/N ratio>105dB (3VRMS ref)THD (Analog)<0.01% (1VRMS, 1KHz)
S/PDIF Digital Input
ConnectorOptical (Toslink)FormatPCM (96KHz max), 24 bits
ConnectorUSB “B” TypeFormatPCM (384KHz max), 24 bits, DSD64 (DoP), DSD128 (DoP)Transfer modeAsynchronous
AntennaBuilt inDACUses Sprout's built in asynchronous DAC over S/PDIF (ESS Sabre 9016 DAC)
Stereo Power Amplifier Output
8Ω loudspeakers connected50 watts per channel, both channels driven4Ω loudspeakers connected100 watts per channel, both channels drivenTHD (Speaker Output)<0.01% (1W, 1KHz into 4Ω)Frequency Response+/- 1dB (1VRMS out, 20Hz – 20Khz into 4-8Ω)Signal to Noise>100dB at max power into 4Ω
32Ω headphones connected500mW300Ω headphones connected125mWTHD<0.01% (1KHz, 50mW into 32 Ω)Signal to Noise>105dB at max power into 300Ω