Rare OEM Volume Control Potentiometer for Marantz Model 7 Tube Preamplifier

Up for sale is an original equipment manufacturer (OEM) volume control potentiometer designed specifically for the iconic Marantz Model 7 (Marantz 7 / 7C) tube preamplifier. Essential for restoring vintage audio equipment to factory specifications or replacing a worn, scratchy, or mismatched control.

Testing & Performance

• Bench Tested: Fully tested for functionality and signal continuity.

• Tracking & Balance: Both decks track smooth and evenly throughout the entire rotation, maintaining tight balance between channels with no audio dropouts or dead spots.

Specifications & Characteristics

• Resistance / Taper: Dual-gang 500kΩ (500k ohm x 2) audio / logarithmic taper.

• Shaft Style: Standard 1/4" (0.25") solid round shaft.

• Rotational Feel: Features correct, high-rotational torque feel—delivers a smooth, firm, and deliberate resistance when turned (not loose or free-spinning).

• Hardware Included: Comes complete with two 3/8"-32 mounting nuts and a full set of assorted 3/8" washers for quick and secure installation.

Condition & Notes : NOS