Compton built a number of large 'special series' electronic instruments and one surviving example is at St Saviour's Church in Iford, Bournemouth. Unlike other standard Compton models at the time, the tone generators, relays and amplifiers are contained in an external cabinet in the choir vestry rather than the console. There are also 3 rotofon speaker cabinets - one located in the chancel and the other two in the north and south transepts. Apart from a new amplifier, all the tone generating equipment is original.

The specification reads:

PEDAL 
Contra Bourdon 32'
Open Wood 16'
Violone 16'
Bourdon 16'
Echo Bass 16'
Octave 8'
Violoncello 8'
Flute 8'
Choral Bass 4'
Harmonics IV
Ophicleide 16'
Trumpet 8'
Harmonics of 32
Choir to Pedal
Great to Pedal
Swell to Pedal

CHOIR
Gedeckt 8'
Dulciana 8'
Gamba 8'
Principal 4'
Koppelflote 4'
Nazard 2.2/3'
Octave 2'
Blockflote 2'
Tierce 1.3/5'
Larigot 1.1/3'
Sifflote 1'
Scharf III
Clarinet 8'
Tuba 8'

GREAT
Double Diapason 16'
First Diapason 8'
Second Diapason 8'
Wald Flute 8'
Gemshorn 8'
Octave 4'
Harmonic Flute 4'
Twelfth 2.2/3'
Super Octave 2'
Mixture IV
Cymbale III
Tromba 8'
Swell to Great

SWELL
Contra Geigen 16'
Geigen Diapason 8'
Lieblich Gedeckt 8'
Salicional 8'
Principal 4'
Lieblich Flute 4'
Salicet 4'
Fifteenth 2'
Cornet III
Mixture III
Contra Fagotto 16'
Trumpet 8'
Oboe 8'
Clarion 4'

ORCHESTRAL (played on choir manual)
Double Dulciana 16'
Quintadena 8'
Concert Flute 8'
Viole de Orchestre 8'
Dulciana 8'
Stopped Flute 4'
Suabe Flute 4'
Dulcet 4'
Dulcet Twelfth 2.2/3'
Piccolo 2'
Dulcet Fifteenth 2'
Dulciana Mixture III
Cor Anglais 8'
Orchestral Oboe 8'
Orchestral on Swell
Swell Off

GENERAL
Tremulant
Great Auto Bass

ACCESSORIES
6 double touch thumb pistons to Choir and Pedal
6 double touch thumb pistons to Great and Pedal
6 double touch thumb pistons to Swell and Pedal
4 thumb pistons to Orchestral
6 toe pistons to Pedal 
3 coupler cancel thumb pistons
1 coupler cancel toe piston - great to pedal
1 general cancel thumb piston
1 balanced expression pedal - swell
1 balanced expression pedal - choir
1 balanced expression pedal - crescendo
Great and Pedal unenclosed
Cancellers Off