Electric mandolin and "EM-8", with carved top bodies and four and eight strings respectively. Blue Star produces four and five string models under the name "Mandoblaster". Jbovier produces four and five string "EMC" electric mandolins, which resemble the Fender electric mandolins, and a four string "ELS" electric mandolin. EMC stands for Electric Mandocaster and ELS stands for Electric Leo Smith. The Eastwood Guitars manufactures solid body eight string electric mandolin under the name "Mandocaster". It has Telecaster resembling body, two single coil pickups and a pickup switch known from Stratocaster guitars. They also make "Mandocaster 12" which is actually an octave guitar.
Octave mandolin also varies widely, from as few as 17 to as many as 24 frets: 18 or 19 frets is typical. From the mid-20th century on, a number of makers have produced octave mandolins with guitar-shaped (e.g., the "hourglass" or "figure-8") bodies. These instruments are typically constructed essentially like acoustic guitars, with similar woods and internal bracing. the neck, however, is much narrower, and supports the mandolin string layout, rather than the traditional 6-strings of the guitar. As with the mandolin and mandola, the octave mandolin has four courses of two strings each. The two strings in each course are tuned