Marantz HDAM-KA Class A Discrete Op-Amp JFET Input Stage DAC Decoding Preamp Amplifier Op Amp
Aliexpress UK
Marantz 170DC power amplifier. Marantz 3250 Pre Amplifier.
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Reference Marantz HDAM Preamplifier Preamp Original Field Effect Input Tube
Aliexpress UK
Marantz Model 7T Stereo Console Preamp.
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Jumpers are sold in PAIRS. I cannot confirm a perfect fit if I don't have the model you have - it's way easier for you to make the call! If they are close to 17 mm distance (pin to pin) keep in mind these are copper and the pins can be spread slightly inward or out for a better fit if your ports require it.
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Country/Region of Manufacture Japan. The wooden case looks like a newly made one, so it may not be a genuine product.
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Marantz Pre-Amp model 3250b. Tested fine. Made in Japan.
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A proper restoration must replace all electrolytic, paper, film, oil capacitors. Do not fall for partial kits. A proper rebuild requires a full recap of all oil, paper, lytic capacitors. Parts for complete recap of all the electrolytic capacitors.
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Tubes are burned in for 48 hours and matched for gm to 10%. This is a world class 12AX7, in the tradition of GENALEX GOLD LION. Notice the long plates. Manufactured in the high end factory of New Sensor Corp., a world class tube manufacturer.
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