Colossus Headshell
The Colossus head shell is designed to be a significant upgrade for the performance of the Kuzma 4Point and 4Point9 tonearms*. It is offered on a strictly exclusive basis to clients who have had their cartridge analyzed by WAM Engineering.
We are so confident that you will love the performance enhancement of the Colossus on your Kuzma arm that we are backing it with a 21 day guarantee. Additionally, if you send your cartridge back to us, we will install it to the Colossus for free.
The Colossus is recommended only for 4Point bearings fitted with the current jeweled bearing design. Not recommended for the older steel bearings.
* Colossus for Ref313 and Ref313 VTA available in future
High Mass & High Rigidity
The obvious sonic advantage of high mass and high rigidity in a cartridge/tonearm system is undeniable provided one follows two primary rules. Watch the "Most Important Location In A Turntable" below to begin learning more.
Vertical Offset
The underside of the Colossus headshell is offset vertically by 4mm. This forces you to place the 4Point bearing slightly below record level which offers advantages when tracking high modulation grooves and allows an opportunity to experiment with the benefits of going very low with your VTF.
Damping Chamber
Following extensive spectrographic analysis, we developed a viscoelastic compound which significantly reduced resonance above 2kHz
Further Education
To better understand the design principles that allow the Colossus to improve the 4Point tonearm's performance as it does, watch the following videos from our Sound Bite educational video series
Sound Bite Video #32: The most important location on a turntable
Sound Bite Video #8: Tracking Force: Is Lower Better?
Sound Bite Video #33: Cartridge & Tonearm matching tables - stop using them!
Sound Bite Video #34: Cartridge/Tonearm "Matching" Is A Flawed Concept - Pt 1
Sound Bite Video #35: Cartridge/Tonearm "Matching" Is A Flawed Concept - Pt 2
Measurement Data
The graph below shows acceleration on the horizontal plane from 10Hz to 10kHz when playing 20Hz-20kHz pink noise. Notice how the Colossus is significantly more stable across the spectrum when compared to the same measurement for the standard Kuzma head shell.
Scale: dBm/s²