for the Rega 202, 301, 303, 330 and 808 style arms.
Will also fit any tonearm with a 13mm end stub or .511 thousands

120 gm 


140 gm


160 gm


You will hear more detail in the music.
Cleaner highs, sweeter mids, ,and deeper bass, Sound stage detail comes alive and a total harmonic balance.
Thatís what the brass Half Moon Heavy Weight will do for you.
The Steel weight can not even come close to the sound you get from the Brass Half Moon Heavy Weight.

Cartridge Weight works like this:
Cartridges 6 to 10 gm, Moon Weight 120
Cartridges 10 to 14 gm, Moon Weight 140
Cartridges 14+  Moon Weight 160

The Half Moon Heavy Weight was designed with two specifics in mind.
A lower mass weight and a linear design for more stability and neutral balance.
Giving the tonearm more neutral balance is key for more natural sounds.

The Half Moon Heavy Weight is made from solid brass with a  brushed finish.
Designed with a Delrin insert for more of a sonic fit, will fit all .508 end stub diameter.
Has a Teflon tipped screw so it does not scratch the end stub.

For the uni-pivot tonearms, what a breeze setting the azimuth with the Half Moon Heavy Weight. Designed with geometry in mind. Expressimo Audio designed the Half Moon Heavy Weight so it had a small amount of weight movement, better linear design for more stability and neutral balance. This is a must have and you should try one.



Custom Half Moon Heavy Weights are available by special order. Email for pricing
Please email the precise measurement of your end stub using a micrometer.
Email with any questions or orders

Customer Views

Brian, here is a pic of  my deck with your counterweight.
I like the way it adjusts verses the original one.
First listening impression after only of couple albums, tighter bass and some more midrange extension.
Very happy with this mod.