Ortofon ST-M25 Moving Coil Transformer

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  • $791.00
  • Regular price $879.00
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Ortofon ST-M25 Moving Coil Transformer

ST-M25 moving coil transformer is designed exclusively for the SPU Mono CG 25 Di MkII and SPU Mono CG 65 Di MkII.

Lead time 41 -49 days. This is a special order product. Delivery timelines are an estimate only and will be confirmed after your order has been confirmed.

Manufacturers Details:

The voltage output of these cartridges is too low to connect to the MM -INPUT terminal of amplifiers or phono-equalizers, resulting in inadequate sound volume. ST-M25 is specially designed to increase voltage by 12dB to match MM input of the ordinary amplifiers or phone-equalizers.

Engineered With Care:

These cartridges supply the same monaural sound from both L/R channels, therefore L/R channels of the cartridges should be connected through ST-M25 and amplifier to the final output “speakers (L/R) ". You can enjoy robust sound of monaural sound coming from L/R speakers.


Frequency: 10-100 kHz (+/- 1 dB)
Step up: 12dB (1 kHz) CA/CG 65 D (i)
Input impedance: 5 Ω - 50 Ω
Load impedance: > 47 kΩ // 200 pF
Dimensions: 65mm(W) × 39mm(H) × 98mm(D)
Weight: 410g