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Audio-Technica AT660T/OCC Step Up Transformer - $275 (Olympia)
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Step-up transformer
AT660T/OCC
Works perfectly, very quiet and provides a range of settings to best match your cartridge. Shows some signs of age, but is very presentable. I don't have the original box, but will pack carefully. If you are not familiar with step-up transformers, they allow you to use a MC cartridge by placing the SUT between your MM phono output and turntable. Since it doesn't require any external power, a SUT can be more quiet and provide "blacker" backgrounds than many MC phono stages. I'm happy to answer any questions you may have or demo the unit if you are local to Olympia, WA.
This transformer consists of left and right independent type transformers with PCOCC coils.
A switch changeover system is used to ensure a wide range of compatibility.
Model Ratings
Model MC step-up transformer
Input impedance 3Ω, 20Ω, 40Ω, Pass
Frequency response 10Hz to 50kHz
Step-up ratio 28dB(3Ω)
20dB(20Ω)
17dB(40Ω)
0dB(Pass)
Dimensions 130mm wide x 70mm high x 163mm deep
Weight 950g
Buyer pays shipping and any transaction fees. Zelle, Venmo, and Paypal are accepted forms of payment. US shipping only.
Keywords: MC cartridge, denon, audio-technica, AT660T, SUT, phono stage