The New GEM Dandy Hydraulic LP Cleaning Apparatus MKII

Vinyl is Forever

Yes that’s right; vinyl is one of the greatest gifts to the preservation of the art of music. Digital is inferior and tape recordings deteriorate. Preserving these vinyl pieces of art is important for the enlightenment of future generations.  This cleaning system was developed over the past 30 plus years.              It is simple, effective and economical.


The G.E.M. Dandy Hydraulic

 LP Cleaning Apparatus MKII

Improvements to the MKll. The label covers use an o ring seal. A hand wheel has been added. A new bearing and stainless steel shaft.  

Cleaners that touch the LP with the force provided by a vacuum can cause damage by flattening the lands, the delicate area that separates the grooves, distorting the information contained in the grooves. The inrush of air developed by a vacuum cleaner can dry an amount of the cleaning agent before it is removed leaving a residue behind. The inrush also dries the liquid along with dirt on the pickup tube and can have the effect of sandpaper. Some cleaners reuse the cleaning fluid. The GEM Dandy touches the LP with clean water only - not contaminated water from a dip tank. The LP is mounted on a rotating mandrel with protective label covers that repel the water. The Super Solution agent is applied to the LP surface to loosen the contaminants. A jet of water from an orifice is applied to the grooves at an angle that flushes away the debris. This system rivals an ultrasonic cleaner costing many thousands of dollars.

 System is supplied with Mandrel Stand- jet Hose- Super Solution - GroOove Lube.


Simple  Effective  Economical

 Note: This is the only method that has a chance of recovering a flood damaged LP.

Review by Dr. Richard Varey TNT-Audio

Review by John Potis

Review by Michael Fremer Stereophile


YouTube Video

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The master record cutting lathe moves in a stright line. Obviously the best method of recovering the groove information is to memic the lathe. A tangent tracking tonearm is expensive and extreamely fussy.

The reason older turntables (also todays less expensive) use 9 inch arms is: the overall size grows thus the cost and the turntable may not fit the average component rack.

The 12 inch radial arm is 3 inches longer than the 9 inch. This difference as shown in the diagram above (it may look like a small amount but when dealing in microns it is huge) relates to about 25% less tracking distortion. The longer the arm the shallower the arc.

One difference is the 12 inch arm's moment of inertia is slightly higher due to the extra length of the arm tube. But the arm tube is extremely light. The effective mass of the 12 inch is very close to the 9, the reason is effective mass is derived by a complicated equation that uses mass and inertia. If your turntable will accept a 12 inch arm the proformance difference will be very apparent. When you are ready to move to a 12 inch arm look at the PolyTable SUPER12 or the Merrill-Williams 101.3