Photo 1 shows the actual potentiometer with modifications, that you will receive.  The pins on this pot are not the same as used in the original receiver.  The installer will need to be creative in installing this part.  The original part is no longer available, this is the option that I can provide.

Shaft length: 25MM

Shaft Diameter: 6MM

You will need to add a wire to connect the loudness tap.  

Also, the pins on the new Pot do not align exactly the same as the original, you will need to bend the leads to fit or add wires as needed to make the necessary connections.

NOS Marantz Volume potentiometer 50K Ohm Dual with Loudness Tap for receivers 2325 2330

These are NOS parts from the late 90's, Made in Japan.  Dual 50K Ohm (50K Ohm BX2) as original with loudness tap. The solder terminals are different than the original, but are not a problem to install in the Marantz receiver.

Note: These NOS parts originally had a 20MM shaft length, this is too short for the Marantz receiver.  Therefore, I modified the shaft to 25MM to properly fit these Marantz receivers.

Also: the loudness tap is located at 20K Ohm, the original pot was 15K OHM. (Most original that I have measured was actually at 11K to 12.5K Ohms).  I have installed these Modified NOS pots into several Marantz receivers, they worked perfectly. 

However, I did notice that the loudness setting with the 20K Ohm Tap increased the Bass boost on some receivers.  

I will install a 51K Ohm in parallel with the 20K tap, this equals 14.3K Ohms for the loudness Tap.  You may remove the 51K Ohm resistors if you want more loudness boost.

I guarantee these to work as described or money back.

Model            Original part number

2325	RM0503061
2330	RM0503061

I am a Marantz collector/restorer and I have installed these Modified NOS pots into several Marantz receivers, they worked perfectly. 

I can also fix most broken or bent shafts using this modification process.  Let me know if want a potentiometer repaired.