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A Sybian (//), or Sybian saddle, is a masturbation device. It consists of a hollow saddle-like seat containing two powerful electric motors, motor speed controller boards, gearing, pullies and a platform on cranked axils such that a ridge on the top of the unit can be made to vibrate through a range of speeds as set using a wired external hand controller, and an upward pointing shaft set on an angle through the ridge can be made to rotate at speeds from zero rpm to several hundred rpm, again by use of the wired remote control. Flexible moulded attachments are supplied which fit over the vibrating ridge and shaft which mostly have integrated dildoes on their top. In use, the rider locates the dildo into their body cavity for internal stimulation while pressing their external erogenous parts on the vibrating ridge.
According to its inventor Dave Lampert, the Sybian was first conceived in the 1970s, and developed in 1983. A prototype was built in 1985 from sheet metal mounted on a wooden frame with a vibrator projecting through an opening inside the housing; a second prototype became the basis for current production models.
Lampert and his team initially called the device Master Better, shortened to "MB" for about four years before selecting a new name for it. The prefix syb in Sybian was derived from Sybaris, an Ancient Greek city in southern Italy which was associated with luxurious living. It is currently manufactured by Abco Research Associates in Monticello, IL.
From his research and experience, Lampert realized that the woman-superior (Girl-On-Top) position during intercourse works best for female orgasm and that stimulation is enhanced when the penis remains fully inserted and the woman rocks her pelvis forward and backward, making contact with the sensitive G-spot, located on the front wall of the vagina.
With this in mind, Lampert designed the Sybian to help women become proficient in the woman-superior position. For many women, the external vibration of the clitoris produced by the Sybian while in the woman-superior position are enough to easily stimulate clitoral orgasms. In addition, the optional penetrating attachments gently rotate to stimulate the vaginal walls and G-spot at variable speeds while also vibrating to help a woman learn how to have multiple G-spot orgasms. Women are also instructed to rock their pelvis forward and back while using the Sybian with a penetration attachment to enhance stimulation of the G-spot.
The Sybian has a weight of 22 pounds (10.0 kilograms), and measures 13.25 in (33.7 cm) wide, 12.5 in (31.8 cm) long, and 8.5 in (21.6 cm) tall excluding the 2 in (5.1 cm) rubber attachment with an 8 feet (2.4 m) power cord. The unit is designed to work with or without a penetration attachment. When in operation, the Sybian distributes powerful vibrations externally along the user's entire pelvic floor, including clitoris, vulva and anus. The optional penetration attachments rotate using a 20:1 ratio gearmotor providing .034 hp (25 W) that can vary from 0 to 120 rpm and vibration is produced using a .059 hp (44 W) electric motor that may be controlled from 0 to 6500 rpm. Both power and vibration/rotation are controlled through a remote control. The Sybian is able to hold over 1,000 lb (450 kg) of weight. It has a padded cover made out of naugahyde and the casing has built in finger grips for carrying.
Generally, the user of the Sybian straddles the machine and inserts the attachment vaginally. The vibration and rotation can be controlled by separate on/off switches and two rotary controls. The Sybian is sold with up to eleven washable attachments of varying sizes made from synthetic rubber in various shapes including a finger, specially designed G-spot stimulator and various sizes of phallus and the addition of two premium silicone parts in 2015 with additional silicone parts being developed and released in the subsequent years. 
The Sybian was featured in Penthouse magazine once it was released in 1987.
Although the Sybian has been featured in many pornographic video productions since the early 2000s, primarily on the Internet, the device came to prominence on The Howard Stern Show since the show's arrival on Sirius Satellite Radio. Howard Stern was given a Sybian as a birthday gift in 2006 and it remains in the studio for use by willing guests.
- Marton, A (1992). "The business of sex". Regardie's Magazine. Washington D.C. 12 (7): 36.
- Dave Lampert. "Sybian for Sexual Gratification - History". Archived from the original on 23 August 2013. Retrieved 25 September 2007.
- "Sybian Details". Abco Research Associates. Retrieved 2008-04-17.
- Ask Lilly with Metis Black. "The Ultimate Guide to Silicone Sex Toys – With Metis Black of Tantus, Inc". Retrieved 26 May 2016.
- West, J (1987), "Sybian: Plug Into The Ultimate Joy Ride", Penthouse Forum, p. 19
- Hessel, E (2006-11-27), Dethroned, 178 (11), Forbes, p. 50