Its major features include an Ortofon Replicant 100 stylus, 99.9999% pure copper armature windings and leads and a slightly modified damping system.
These improvements have made it possible to reduce the tracking force and obtain a more linear frequency response. With the selection of the Ortofon Replicant 100 stylus, we have chosen the diamond whose geometry permits tracking of even the highest-frequency groove information.
In order to satisfy the requirements of owners of vintage equipment, the SPU Gold Reference was introduced in two different housings. The SPU Gold Reference requires a tonearm which is rigid, devoid of resonances and able to counterbalance a cartridge weight of 32g in this GM version.
Sonically, the Gold Reference is still a genuine SPU of which Mr. Gudmandsen would be proud.
Following the SPU tradition, the cantilever of the SPU Gold Reference is cylindrical and made from aluminium which has been gold plated by means of a metal evaporation process to match the other metal parts of the cartridge.
The relatively large, square armature ensures a more than adequate output voltage of 0.2 mV plus, while the low number of windings make the cartridge a genuine low-impedance design, featuring an internal resistance of only 3 Ohm. A further improvement of the sonic qualities is obtained by means of 99.9999% pure copper for the windings and the litz wire leads in the GM housing.
One of the secrets behind the characteristic Ortofon SPU sound is the rubber bearing which dampens the cantilever movements. Consequently, this bearing is of exactly the same type as in the standard SPU cartridge. In order to improve the frequency linearity, the suspension wire has been made a little longer.
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