Pendulum introduced the world's first rack-mounted acoustic guitar preamp back in 1988, and we have led the field ever since. Our client list reads like a who's who of acoustic musicians, including artists as diverse as James Taylor, Leo Kottke, Bob Dylan, Jackson Browne, David Wilcox, The Eagles, Steve Earle, Jeff Tweedy, Ray Lamontagne, John Williams, John Fogerty, Alex De Grassi, Metallica, Counting Crows, Lou Reed, Goo Goo Dolls, Rusted Root, Keb' Mo', Bob Weir, Phil Keaggy, John Sebastian, Arlo Guthrie, Al DiMeola, Kenny Loggins, Justin Hayward, Leon Redbone, Donovan, Laurence Juber, David Lindley, Jonatha Brooke, Catie Curtis, Gary Louris, Earl Klugh, Lindsay Buckingham, Clint Black, Ottmar Liebert, Mike Marshall, Wayne Johnson, John Abercrombie, Ravi Shankar, Patty Larkin, Lucinda Williams, Stephen Bennett, Brooks Williams, Tom Chapin, David Broza, Willy Porter, Bob Harris, and many, many others! (click on front panel for larger photo) The SPS-1 Stereo Preamp - Something for Everyone  Since its introduction in 1993, Pendulum's SPS-1 has been recognized as the world leader in sound quality and flexibility for processing your acoustic instruments in true stereo. With two channels of fully parametric EQ and studio-quality mic preamps, the SPS-1 can easily adapt to any combination of instrument pickups, internal mics, or external mics. Use the SPS-1 with our two pickup preamp modules (Pickup/Pickup or Pickup/Mic) to individually process two pickups or a pickup and an internal mic in stereo. Or, blend two pickups in Channel 1 with an external instrument or vocal mic in Channel 2. Run a single or two pickup instrument into each channel. Hang a stereo pair of studio mics out in front of your instrument and go direct to DAT or multitrack. Or use it as two channels of parametric EQ during mixdown. The choice is up to you. And all this flexibility comes with no sacrifice in sound quality. We've still got the cleanest, quietest, warmest all-analog signal path in the business. It's the reason that Pendulum is the choice of serious acoustic players, both on stage and in the studio. Just look at the features we've stuffed into a single rack space! Two Independent Input Channels: · Three Band Fully Parametric EQ with broad frequency overlap and variable bandwidth. Ranges are: 35-880Hz, 180-4.2kHz, 840-19kHz · Preamp Module (single or two pickup ) or external Mic input. · Input Mode switch on Channel 1 to blend two pickups to mono (1) or split to stereo (1/2). · Switchable +48v phantom power on mic input. · Peak and Signal LED metering. · Line Input for use with on-board electronics, wireless systems, or as an outboard EQ. · Channel Insert for individual effects processing. · Phase Reverse switch. · TRS Balanced Direct Output. Master Output Section · Pan controls for Channels 1 and 2. Full Stereo Effects Loop with Mix/Replace switching. Instrument Mute and Effects Foot Switch. · Tuner Output assigned to Channel 1 (pickup only). · Phase Reverse switch. · XLR Balanced Stereo Outputs with ground lift switch. Monitor Output Section · Monitor Out can be assigned to Stereo Mix or Channel 1. · Headphone Output. · Phase Reverse switch. · 1/4" Stereo Outputs. Additional Features · The latest in high speed/low noise circuitry. · Toroidal transformer for minimum hum. · Audiophile-quality components. · Silent, low distortion FET shunt switching. · Handcrafted in the USA.   Preamp Modules    Pickup/Pickup for Piezo/Magnetic and Piezo/Piezo combinations  Pickup/Mic for Piezo/Mini-mic and Magnetic/Mini-mic combinations  Single Pickup for Piezo, Magnetic and active pickups