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Preamp - Technical References

30 items in Technical References → Preamp

All Adamas Proto and Pre-Prod Documents 71 Bracing 10 Bridge 63 Color 149 Epaulet 74 Headstock 187 Label 91 Rosette 45 Trc 17 Collector Inlay 26 Preamp 30
All Adamas Proto and Pre-Prod Documents 71 Bracing 10 Bridge 63 Color 149 Epaulet 74 Headstock 187 Label 91 Rosette 45 Trc 17 Collector Inlay 26 Preamp 30
Ovation Guitar VIP Preamp Preamp

Ovation Guitar VIP Preamp

2006

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Ovation Guitar VIP Preamp
2006 · US

Ovation Guitar VIP Preamp

Year: 2006

The Ovation VIP (Virtual Image Processing) preamp was officially launched in 2006, representing a major technological leap for acoustic-electric guitars. Unlike standard preamps that simply amplify a piezo signal, the VIP utilized advanced modeling technology developed in collaboration with Fishman. It allowed players to blend their natural pickup sound with "images" of high-end studio microphones (like the Neumann U87) recorded in professional environments. ​This system effectively eliminated the "piezo quack" by replicating the resonance and air of a mic’d instrument. It featured a sleek interface with a built-in digital tuner, a 3-band EQ, and a dedicated dial to switch between five distinct studio-quality mic profiles. Even today, it is praised by enthusiasts for its ability to make a thin-bodied Ovation sound like a full, rich dreadnought through a PA system.

Ovation OP Pro Preamp Preamp

Ovation OP Pro Preamp

2004

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Ovation OP Pro Preamp
2004 · US

Ovation OP Pro Preamp

Year: 2004

The Ovation OP Pro Preamp was introduced in 2004, designed in collaboration with professional guitarists to deliver a more natural, studio-quality acoustic tone. This high-output preamp features a 3-band EQ, a precise onboard digital tuner, and a unique "Pre-Shape" circuit that optimizes frequency response. ​A standout feature is its Gain/Volume control and a battery status indicator, housed in a sleek, user-friendly interface. It was engineered to work seamlessly with Ovation’s OCP-1K pickup, minimizing noise while maximizing headroom for live performances. Unlike its predecessors, the OP Pro offers a more "organic" feel, reducing the typical "piezo quack" found in older electronics. It quickly became a standard for the mid-to-high-end Ovation lineup due to its reliability and warmth.

Ovation OP20 Guitar Preamp Preamp

Ovation OP20 Guitar Preamp

2004

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Ovation OP20 Guitar Preamp
2004 · US

Ovation OP20 Guitar Preamp

Year: 2004

The Ovation OP20 guitar preamp was officially introduced in 2004, designed as a versatile, mid-range solution for their Celebrity and Standard Series. It features a streamlined interface with a 3-band EQ (Bass, Mid, Treble) and a dedicated Pre-shape button to enhance low-end warmth. A standout feature of this model is the integrated onboard chromatic tuner, which was a significant upgrade for stage convenience at the time. ​Known for its reliability, the OP20 delivers a clean, transparent signal that complements Ovation’s signature piezo pickups. The unit is powered by a standard 9V battery and includes a low-battery indicator to prevent mid-performance failures. While simpler than the high-end OP-Pro, it remains a favorite for its ease of use and consistent tonal quality.

Ovation OP40 Guitar Preamp Preamp

Ovation OP40 Guitar Preamp

2003

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Ovation OP40 Guitar Preamp
2003 · US

Ovation OP40 Guitar Preamp

Year: 2003

The Ovation OP40 preamp was introduced in 2003, becoming a staple for the brand's high-end guitars during the mid-2000s. Known for its clean headroom and low-noise circuitry, it offers professional-grade tone shaping for stage and studio. It features a 3-band EQ, a dedicated Mid-Shift switch for frequency control, and a Pre-Shape circuit to enhance the "Ovation" sparkle. ​A standout feature is the built-in chromatic tuner with a clear LED display for easy visibility under stage lights. The unit also includes a "Battery Status" indicator and a notch filter to effectively suppress feedback. Its modular design allows for quick battery changes via a convenient pop-up compartment. This preamp remains a favorite among players for its balance of simplicity and high-fidelity output.

Ovation OP50 Guitar Preamp Preamp

Ovation OP50 Guitar Preamp

2000

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Ovation OP50 Guitar Preamp
2000 · US

Ovation OP50 Guitar Preamp

Year: 2000

The Ovation OP50 preamp was introduced in 2003, representing a peak in the brand’s high-end electronics. Designed for professional stage use, it features a sophisticated 3-band EQ with a sweepable mid-range for precise tonal shaping. A standout feature is the Variable Notch Filter, which effectively kills acoustic feedback by targeting specific frequencies. It also includes an integrated digital chromatic tuner with an easy-to-read display and a convenient "Mute" function for silent tuning. Known for its high output and low noise floor, it delivers a very natural, transparent acoustic sound. This preamp was a staple on premium models like the Legend and Elite series throughout the mid-2000s.

Ovation HexFx Preamp Preamp

Ovation HexFx Preamp

1999

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Ovation HexFx Preamp
1999 · US

Ovation HexFx Preamp

Year: 1999

The Ovation HexFX preamp was released in 1999, designed specifically for the high-end Collector’s Series guitars. This innovative system features a hexaphonic pickup, meaning it processes the signal of each string individually rather than blending them into a single mono output. Its most distinctive feature is the 13-pin DIN connector, which allows the guitar to interface directly with MIDI converters and guitar synths like the Roland GR-series. ​Equipped with a dual-output system, players can send a standard 1/4" mono signal to an acoustic amp while simultaneously using the 13-pin out for digital tracking or synth triggering. The preamp offers a 3-band EQ and a volume slider, providing tactile control over the "natural" acoustic tone even when MIDI is engaged. It remains a legendary piece of gear for experimental guitarists seeking polyphonic clarity and MIDI versatility.

Ovation OP-X Guitar Preamp Preamp

Ovation OP-X Guitar Preamp

1999

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Ovation OP-X Guitar Preamp
1999 · US

Ovation OP-X Guitar Preamp

Year: 1999

The Ovation OP-X guitar preamp was introduced in 1999, specifically designed to complement the high-end Viper series and some Adamas models. It stands out for its minimalist aesthetic, featuring a simple set of sliders for volume and a four-band EQ (Bass, Mid, Treble, and Presence) rather than a bulky control panel. Unlike its predecessors, the OP-X was engineered with high-fidelity circuitry to deliver a more transparent, "acoustic-natural" tone. It lacks a built-in tuner, focusing instead on signal purity and low-noise output for professional stage use. This preamp is often praised by purists for its warm, organic response and its robust construction. Even decades later, it remains a favorite for its "set-it-and-forget-it" reliability and distinctive Ovation clarity.

Ovation OP24-E Preamp Preamp

Ovation OP24-E Preamp

1999

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Ovation OP24-E Preamp
1999 · US

Ovation OP24-E Preamp

Year: 1999

The Ovation OP24-E was released in 1999 as an enhanced, modern evolution of the classic OP24 circuitry. It was designed to offer players a more intuitive interface while maintaining the signature high-output, low-noise performance of the brand. This preamp features a 3-band EQ (Bass, Mid, Treble) and a specialized Pre-shape circuit that boosts the lows and highs for a "scooped" acoustic tone. ​A defining upgrade of the "E" version is the inclusion of a built-in digital chromatic tuner, allowing for quick adjustments on stage. The unit also includes a dedicated battery status LED and a gain control slider to manage output levels effectively. It became a staple on mid-to-high-end models like the Legend and Elite series during the early 2000s.

Ovation OP30 Guitar Preamp Preamp

Ovation OP30 Guitar Preamp

1999

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Ovation OP30 Guitar Preamp
1999 · US

Ovation OP30 Guitar Preamp

Year: 1999

The Ovation OP30 guitar preamp was officially introduced in 1999, quickly becoming a staple on the Celebrity and Standard Balladeer series. It was designed as a high-performance upgrade, featuring a sophisticated 3-band EQ and a specialized "Pre-Shape" circuit to enhance acoustic clarity. A standout feature is its highly accurate built-in chromatic tuner, which allows for seamless tuning even when the guitar is unplugged. The unit also includes a dedicated Gain control and a Notch filter to effectively suppress feedback during live performances. Its sleek, modular design made it easy to swap or service, fitting perfectly into the standard Ovation preamp cavity. Known for its low-noise circuitry, it provides a crisp, transparent tone that respects the unique resonance of the Lyrachord body. Even today, it remains a favorite for players seeking a reliable, "all-in-one" workhorse for stage and studio use.

Ovation OP-10 Applause Preamp Preamp

Ovation OP-10 Applause Preamp

1998

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Ovation OP-10 Applause Preamp
1998 · US

Ovation OP-10 Applause Preamp

Year: 1998

The Ovation OP-10 preamp was introduced in 1998 as a specialized electronics package for the Applause series, Ovation’s budget-friendly line. Designed for simplicity and efficiency, it features a sleek, low-profile interface consisting of a Gain slider and a 3-band EQ (Bass, Mid, Treble). A notable highlight is the integrated LED battery status indicator, which warns players before power runs out during a performance. It was specifically engineered to work with the Slimline pickup, providing a bright, punchy acoustic tone that cuts through a mix. While it lacks the advanced "pre-shape" filters of higher-end Ovation models, it is praised for its rugged durability and ease of use. This preamp became a staple on AE-series models, offering reliable "plug-and-play" capability for beginner and intermediate guitarists.

Ovation Guitar DJ-4 Celebrity Preamp Preamp

Ovation Guitar DJ-4 Celebrity Preamp

1997

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Ovation Guitar DJ-4 Celebrity Preamp
1997 · US

Ovation Guitar DJ-4 Celebrity Preamp

Year: 1997

The Ovation DJ-4 Celebrity Preamp was released in 1997 as a signature electronics package for the DJ-61 and DJ-64 models (the Derek James signature series). It is easily identified by its sleek, vertical black faceplate and a simplified control layout designed for live performance. The unit features a 3-band EQ (Bass, Mid, Treble) alongside a master volume slider and a "Pre-Shape" button to enhance acoustic clarity. ​Unlike the more complex OP series, the DJ-4 focuses on a "plug-and-play" philosophy with a focus on feedback rejection. It was primarily manufactured in Korea to fit the Celebrity line's mid-range price point while maintaining high-output gain. Its legacy remains tied to the late 90s era of Ovation’s distinctive "Lyrachord" bowl-back acoustic-electric innovation.

Ovation Guitar Preamp OP24+C Preamp

Ovation Guitar Preamp OP24+C

1997

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Ovation Guitar Preamp OP24+C
1997 · US

Ovation Guitar Preamp OP24+C

Year: 1997

The Ovation OP24+C is a high-fidelity onboard preamp designed to deliver the brand's signature acoustic-electric clarity with enhanced tonal control. Launched in the late 1990s (around 1997-1998), it features a versatile 3-band EQ with a bypass switch for a pure, uncolored signal. This specific "C" version is notable for its built-in chromatic tuner, allowing for precise tuning even in dark stage environments. It also includes a "Pre-Shape" circuit that boosts bass and treble while cutting mid-range frequencies for a polished, professional sound.

Ovation Guitar Thinline Preamp Preamp

Ovation Guitar Thinline Preamp

1997

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Ovation Guitar Thinline Preamp
1997 · US

Ovation Guitar Thinline Preamp

Year: 1997

The Ovation Thinline Preamp was officially introduced in 1997 as a streamlined, high-performance alternative to their bulkier electronics. Designed for players who preferred a low-profile aesthetic, it abandoned the large plastic housing of previous models for a discrete, "thinline" vertical design. This preamp featured a specialized FET circuit to deliver a high-output, low-noise signal that captured the guitar’s natural acoustic resonance. ​Its interface was famously minimalist, typically sporting three sliding controllers for Volume, Bass, and Treble. Despite its slim size, it was highly regarded for its "plug-and-play" simplicity and road-worthy reliability on stage. The unit was specifically optimized to work with the Ovation OCP-1 "Palathetic" pickup, ensuring a balanced string-to-string response. This model marked a shift toward integrating electronics more seamlessly into the guitar’s body without compromising structural integrity.

Ovation T.S 1997 Collector Preamp Preamp

Ovation T.S 1997 Collector Preamp

1997

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Ovation T.S 1997 Collector Preamp
1997 · US

Ovation T.S 1997 Collector Preamp

Year: 1997

The Ovation TS (Touch Sensitive) preamp was released in 1997 as a revolutionary "less is more" interface. Unlike traditional preamps with sliders or knobs, it features a proximity-sensing control panel flush with the guitar body. Its main characteristic is the absence of mechanical parts, using raised symbols on the upper bout for volume adjustment. The system includes a preset EQ curve specifically tuned to provide a natural, balanced acoustic tonality immediately. This design eliminates the common "crackling" noise found in aging potentiometers, ensuring high long-term reliability. The volume changes are described as immediate and repeatable, responding directly to a light touch of the finger. It was designed to be aesthetically discrete, reducing the "cosmetic intrusion" of large plastic preamp boxes on the wood. The TS preamp remains a unique piece of Ovation history, blending aerospace-style sensors with acoustic performance.

Ovation OP-24+ Guitar Preamp Preamp

Ovation OP-24+ Guitar Preamp

1995

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Ovation OP-24+ Guitar Preamp
1995 · US

Ovation OP-24+ Guitar Preamp

Year: 1995

The Ovation OP-24+ was introduced in 1995 as a modernized successor to the original 1980s OP-24. It features a high-fidelity circuit with a 3-band EQ, a Mid-Shift switch (400 Hz/1 kHz), and a "Pre-Shape" button for enhanced tonal depth. Designed to be ultra-quiet, it became a staple on mid-to-high-end models like the Standard Balladeer and Legend. The unit offers an EQ bypass switch for a pure acoustic signal and includes a battery status LED. Its professional-grade performance and ease of use solidified Ovation's reputation in the acoustic-electric market. Later versions, like the OP-24+C, even added a built-in digital tuner for added convenience.

Ovation OP-2 B Preamp Preamp

Ovation OP-2 B Preamp

1994

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Ovation OP-2 B Preamp
1994 · US

Ovation OP-2 B Preamp

Year: 1994

The Ovation OP-2B preamp was introduced in 1994 as a streamlined, user-friendly alternative to the more complex OP-24 series. It was commonly featured on the "Celebrity" and "Standard Balladeer" lines, bridging the gap between entry-level and professional electronics. This preamp is known for its active 3-band EQ, allowing precise control over Bass, Midrange, and Treble frequencies via vertical sliders. A key feature is its dedicated Gain knob, which provides smooth output level adjustment for live performance or recording. ​Designed for efficiency, it utilizes a single 9V battery accessible via a convenient top-mount compartment for quick changes. Its circuitry was optimized to capture the signature Ovation "snap" while maintaining a low-noise floor for cleaner amplification. Although simpler than later digital models, the OP-2B remains a reliable favorite for players who prefer tactile, analog-style tone shaping.

Ovation OP-14 Mandolin Preamp Preamp

Ovation OP-14 Mandolin Preamp

1993

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Ovation OP-14 Mandolin Preamp
1993 · US

Ovation OP-14 Mandolin Preamp

Year: 1993

The Ovation OP-14 preamp was released in 1993, specifically designed to complement the unique frequency range of Ovation’s acoustic-electric mandolins. As a specialized, compact unit, it features a streamlined 3-band EQ (Bass, Mid, Treble) and a Master Volume control to shape the mandolin's bright, percussive tone. ​This preamp is most famously integrated into the MM68 series, known for its ability to deliver high-output signals with minimal feedback during live performances. Its circuitry was optimized to handle the sharp transients of double-stringed instruments, ensuring a crisp, natural sound through a PA system. Despite its age, it remains a favorite for its simplicity, reliability, and low battery consumption.

Ovation Guitar Optima Preamp Preamp

Ovation Guitar Optima Preamp

~1992

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Ovation Guitar Optima Preamp
~1992 · US

Ovation Guitar Optima Preamp

Year: 1992

The Ovation Optima preamp was released in 1992, representing a high-end leap for the brand by integrating an onboard digital tuner—a rarity at the time. It is easily recognized by its sleek, four-slider layout and a small LED display for tuning and battery monitoring. Designed for professional stage use, it features a 4-band graphic EQ (Bass, Mid, Treble, and Presence) for precise tonal shaping. ​One of its standout features is the Notch Filter, which allows players to surgically remove feedback frequencies without altering the overall sound. It also includes a "Pre-shape" circuit that instantly boosts lows and highs while cutting mids for a classic acoustic "scooped" tone. The Optima was often paired with the high-output CP-100 pickup, making it a staple on premium models like the Collectors' Series and the Adamus. Though eventually replaced by the OP series, it remains a favorite for its warm, studio-quality output.

Ovation Guitar Viper EA Preamp Preamp

Ovation Guitar Viper EA Preamp

1992

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Ovation Guitar Viper EA Preamp
1992 · US

Ovation Guitar Viper EA Preamp

Year: 1992

The Ovation Viper EA Preamp was introduced in 1992 as a dedicated electronic system for the solid-body nylon and steel-string Viper series. Designed to bridge the gap between acoustic tone and high-volume stage performance, it features a sleek, minimalist control layout integrated directly into the guitar's top. The interface typically includes a master volume and a stacked dual-concentric pot for treble and bass equalization. ​It is powered by a standard 9V battery and is specifically voiced to work with Ovation’s high-output bridge piezo pickups. This preamp is highly regarded for its ability to eliminate feedback while maintaining a crisp, percussive "snap" ideal for jazz and world music. Despite its simplicity compared to later multi-band units, it remains a favorite for its low-noise floor and rugged reliability.

Applause Guitars by Kaman Applause Preamp Preamp

Applause Guitars by Kaman Applause Preamp

~1990

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Applause Guitars by Kaman Applause Preamp
~1990 · US

Applause Guitars by Kaman Applause Preamp

Year: 1990

This is the onboard preamp control panel from an Applause guitar, a budget-oriented brand manufactured by Kaman Music Corporation, the parent company of Ovation Guitars. The panel features two slider potentiometers labeled TONE and GAIN, each with a 0-10 scale, mounted on a black housing. Applause guitars were produced as more affordable alternatives to Ovation instruments, sharing similar acoustic-electric design philosophies.

Ovation Preamp Control Panel – Ukulele 2 knobs Preamp

Ovation Preamp Control Panel – Ukulele 2 knobs

~1990

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Ovation Preamp Control Panel – Ukulele 2 knobs
~1990 · US

Ovation Preamp Control Panel – Ukulele 2 knobs

Year: 1990

This is an Ovation guitar's onboard preamp control panel featuring two black rotary knobs labeled VOLUME and TONE. The VOLUME knob is calibrated from 0 to 10, while the TONE knob ranges from minus to plus, allowing tonal adjustment. The panel is finished in black and secured with two Phillips head screws, typical of Ovation's acoustic-electric guitar electronics.

Ovation Guitar OptiMax Preamp Preamp

Ovation Guitar OptiMax Preamp

~1990

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Ovation Guitar OptiMax Preamp
~1990 · US

Ovation Guitar OptiMax Preamp

Year: 1990

This is the Ovation OptiMax onboard preamp control panel, featuring a comprehensive set of tone-shaping controls including Volume, Blend, Bass, and Treble sliders alongside an EQ bypass switch. The unit includes a crossover (X-Over) control with LOW/HI selection, a Mid Shape knob for midrange contouring, and a Phantom/Battery power indicator with a red LED. The OptiMax system represents Ovation's advanced onboard electronics designed for acoustic-electric guitars.

Ovation K-Graphic Preamp Preamp

Ovation K-Graphic Preamp

1986

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Ovation K-Graphic Preamp
1986 · US

Ovation K-Graphic Preamp

Year: 1986

The Ovation K-Graphic (often referred to as the Kaman Graphic) preamp was introduced in 1986. It was a groundbreaking addition to the Ovation lineup, representing one of the first high-end acoustic-electric systems to offer a built-in 6-band graphic equalizer. This allowed players to have unprecedented control over their tone directly from the guitar’s shoulder, specifically targeting frequencies that often caused feedback or muddiness. ​Unlike the simpler rotary-knob predecessors, the K-Graphic featured sleek vertical sliders and a dedicated volume control, becoming a staple on premium models like the Collector’s Series and the Custom Legend. It was prized for its low-noise circuitry and its ability to shape the distinct "Ovation sound" for professional stage use. Despite its age, it remains a favorite among enthusiasts for its robust build and vintage analog warmth.

Ovation Celebrity 2 Knobs Preamp FET-3 Preamp

Ovation Celebrity 2 Knobs Preamp FET-3

1985

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Ovation Celebrity 2 Knobs Preamp FET-3
1985 · US

Ovation Celebrity 2 Knobs Preamp FET-3

Year: 1985

The Ovation Celebrity 2-Knob Preamp (often referred to as the FET-3) was introduced around 1985 for the early Celebrity series. This streamlined system features a minimalist design with two primary rotary controls: Volume and Tone. It was designed to offer players a "plug-and-play" experience without the complexity of multi-band sliders found on higher-end models. ​The Tone knob acts as a passive-style filter, rolling off high frequencies to soften the piezo's natural "quack." Despite its simplicity, it is praised for its durability and the warm, analog character of its FET circuitry. This preamp helped democratize the Ovation sound, making it accessible to gigging musicians on a budget. Today, it is considered a vintage staple of the mid-80s Korean-made Celebrity line.

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