The Io range of cartridges from Audio Note UK are world-renowned for their stunning quality and their effortless ability to reproduce music to the highest standards and the Io Ltd. is at the very pinnacle of the range, and to many audio enthusiasts, at the very pinnacle of what is possible from music on vinyl. The revolutionary nature of the basic Io design runs contrary to most accepted design criteria, but the result is a small range of hand-made moving coil cartridges that are second to none in dynamic range, tonal balance, separation, timbral reproduction, and lack of colouration and surface noise. The cartridge designs do not lend themselves to mass production and as a result are extremely time-consuming to produce. They require a tone arm of very substantial rigidity, and must be combined with a matching transformer in order to achieve the best possible linearity and dynamic signal transfer. The Io Ltd. takes the design to a totally new level and is unique in its use of an electrically-generated magnetic field.
All Io cartridges are hand-built in the UK to exacting standards and the Ltd. features silver-wound generator coils and a titanium cantilever with an Audio Note AN Type-1 profile, diamond stylus. The Audio Note Io Ltd is unique among cartridges in its use of a field coil for a ‘permanent’ magnet, rather than a fixed magnet. This absolutely no-compromise design requires an external power supply to drive the field coil. A suitable unit is available from us. Please also note that tone-arm wiring will need to provide for two additional wires. Due to its hand-built construction, the Io Ltd. is usually not available from stock and is constructed to order.
Output voltage: 0.04mV
Coil impedance: 1 ohm
Matching impedance: 3-4 ohms
Frequency range: 10Hz-50kHz ± 3dB (dynamic test)
Channel separation: greater than 30dB at 1kHz
Compliance: vertical 15, horizontal 10
Stylus tracking weight: 1.5-4 gm
Weight: 19 gm
Power requirements: 1.2V DC at 0.4 A
Current retail price on request