The Vox Gyrotone rotary cabinet: I, II, III and IV

Above, a detail from an advert in "Beat Instrumental" magazine, November 1966. The Gyrotone was originally called the "Gyrovox" - .

Click to enlarge. April 1967 pricelist. Standard production models.

The Russell Hotel Music Fair, August 1967. The large cabinet on the left with the angled front is likely to be a first design for the Gyrotone IV. The amp sitting on top was later put into production by Jennings Electronic Industries, not Vox. See the .

Above, the band "Time Cycle" with an early split-front Gyrotone III. Note the two twelve inch speakers in the lower section of the unit.

Above, a split-front Gyrotone III (from c. 1968) that came up for sale in 2017. The design was later simplified - see for instance the adverts immediately below. For later Gyrotone IIIs see the foot of this page.

On the left, a page from the "Vox Sound Limited" catalogue of August 1970. On the right, an advert taken in "Melody Maker" magazine, December 1970, advertising the Gyrotone II and III. For the Midas amplifier mentioned in the page from the Melody Maker, .


Produced first by JMI, then by VSEL and VSL. Serial numbers for JMI units began at 5001. Vox Sound Ltd serial numbers began at 001. JMI made 150 or more - see the Gyrotone I units immediately below.

JMI serial no. 5087

JMI serial number 5087. Motor replaced, but excellent condition otherwise. Currently in Spain.

JMI serial no. 5098

Sold on ebay uk in early 2017. JMI serial numberr 5098. Good overall condition and complete with its cover (identical to the one pictured below).

JMI serial no. 5155

A JMI unit, serial number 5155. Perhaps the original footswitch - as for the solid state bass amps - but corroboration needed.

VSL serial no. 47

Vox Sound Limited, serial number 047. By 1969 the Gyrotone I had been phased out. Adverts only mention and illustrate IIs and IIIs.

Quick snaps of a loose Gyrotone Mk 1 cover, no gyrotone to go with it at the moment. It is 18" tall and measures (round the hem) 21" x 25 1/2". There are openings for handles low down on both sides.


At least 122 made (going by the example below) and very probably a good many more. In common with Vox PA amplifiers, these units were not much prized in the 1980s and 1990s.

JMI serial number 5122

Serial number unknown

Only a single picure. Likely to be JMI - note the gold string. Used, in the pic, as a base for a television.

The Jennings version of the Gyrotone II.

Another example of the Jennings version but with a Vox badge.

A further example of a Jennings Gyrotone (re-grilled with Vox cloth).

A later flat-fronted Gyrotone II - the cab not unlike Foundation Bass cabs, with an overhanging lip. Silver string.


Sold on in early 2017. A nice Gyrotone III, "Vox Sound Limited", serial number 069. Note that the speaker - a single 18" Celestion driver - has a "Vox Sound Equipment Limited" sticker. The unit was probably sold in late 1970.

Pictures originally posted . A two speaker unit (2 x 12"), both, as above, with "Vox Sound Equipment Limited" labels.

Vox Sound Limited, serial number 068. From c. 1970-1972.

A single pic of a cabinet sold on ebay some time ago.