Brand: Guyatone Model: PS-007 Phaser Type: Analog Phaser Pedal Made in: Japan Serial number: 812131 Colour: Black Complete set with original box, warranty card, and instruction manual – increasingly difficult to find. Produced during the formative years of Guyatone’s compact effects pedal production and representing an important chapter in Japan’s vintage effects history. This is a Guyatone PS-007 Phaser from the GUYATONE EFFECT BOX SERIES, manufactured in Japan around 1981. Carefully cleaned, inspected, and fully tested, this pedal remains an excellent example of an early Japanese analog phaser from the golden era of Japan Vintage compact effects. The PS-007 was developed during a period when Japanese manufacturers were establishing a worldwide reputation for innovative and musical analog effects designs. Featuring a sophisticated multi-stage phasing circuit, the pedal delivers the warm, rich modulation character that made early Japanese phasers highly regarded among players and collectors. What makes this particular example especially desirable is its unusually complete package, including the original box, original warranty card, and original instruction manual. Examples retaining all original accessories have become increasingly difficult to locate after more than four decades. This early black-face PS Series model features four RC4558P operational amplifiers, multiple FET stages, and classic Japanese analog circuit architecture. The result is a smooth and musical phasing effect with excellent depth and movement, equally suitable for subtle modulation or more pronounced psychedelic textures. Cosmetically, the pedal remains in remarkably clean condition for its age. Only minor signs of use are present, and the overall appearance has been well preserved considering it is more than forty years old. Estimated Production Period Circa 1981. Most likely manufactured between late 1980 and mid 1981. Dating is supported by the serial number structure, circuit architecture, component selection, and overall production characteristics consistent with early PS Series models. Condition Very good vintage condition for its age. The pedal has been carefully cleaned, inspected, and tested. Operation was confirmed using both a 9V battery and DC adapter. No noticeable scratchiness or unwanted noise was detected from the controls during testing. Minor cosmetic wear may be present, including slight paint lifting consistent with age. Please refer to the photographs for exact cosmetic condition. Includes Original box Original warranty card Original instruction manual Note: Battery and AC adapter are not included. Technical Highlights Made in Japan GUYATONE EFFECT BOX SERIES Early PS Series analog phaser Four RC4558P operational amplifiers Multi-stage analog phase shifting circuit FET-based sweep architecture Warm vintage Japanese phasing character Operates via 9V battery or DC adapter Fully tested and working properly Original box and paperwork included Production Background Guyatone was one of Japan’s pioneering electric instrument manufacturers and played an important role in the development of Japanese electric guitars and electronic musical equipment throughout the post-war era. Founded by Mitsuo Matsuki, widely regarded as one of the pioneers of electric guitar manufacturing in Japan, Guyatone became internationally recognized for innovative electronic instrument design and practical engineering solutions. While the company produced guitars, amplifiers, and other musical equipment, it became particularly respected for its effects pedals. During the late 1970s and early 1980s, Guyatone introduced the EFFECT BOX SERIES, helping establish Japan as a major force in the global compact effects market. The PS-007 represents this important period in the company’s history. Designed during the early years of the Japanese analog effects boom, it reflects the craftsmanship and engineering quality that helped Japanese-made pedals earn worldwide recognition. Today, original Japanese-made Guyatone pedals are increasingly appreciated by collectors and musicians alike, particularly examples from the company’s early production years that retain their original accessories and documentation. For collectors seeking an authentic early-1980s Made-in-Japan analog phaser beyond the more commonly encountered BOSS and Maxon models, the PS-007 remains a desirable and increasingly difficult-to-find example. Shipping method: Carefully packed and shipped from Japan. Shipping is primarily carried out via EMS (Japan Post). Please note that we only ship to countries where EMS service is available from Japan. Orders from countries where EMS shipping is not available may be cancelled. For shipments to the United States, Yamato Transport (International TA-Q-BIN) may be used instead. Delivery methods may vary depending on the destination country, shipping conditions, and service availability. Shipping costs are to be paid by the buyer. Import duties, VAT, customs clearance fees, and any additional charges are the responsibility of the buyer. Please note that import regulations may vary depending on the destination country. Some items may be restricted or subject to specific import conditions in certain countries (including parts of the EU). By placing a bid, the buyer agrees to check and comply with all applicable import regulations and requirements in their country. Buyers are responsible for ensuring that the selected shipping method is available in their country. The seller cannot be held responsible for delays, refusals, or additional charges caused by customs regulations. Orders may be cancelled if shipping or import conditions cannot be met. We do not ship to P.O. BOX, APO, or FPO addresses.