Finally run in the New Duelund Jam caps are Excellent, great detail, depth
And with this latest technologies, The Tinned Copper gives thst extra sparkle and air vs just Copper these being too paper in oil. They do not have the paper case which is better still .
But Duelund just came out with a Bypass cap with Paper case ,
And s silver foil if your system iscslready rich ,and even better detail,
But not as much body .you will have to decide which us better.
Both are under $100 each at Parts connecxion.