TWL cables are tremendous values and Pete's customer service is second to one. The 7+ cable is dynamic and was voiced on Pete's system which is 300B based.
People all too often think of power cables only in terms of gauge. The geometry of cabling is at least as important as gauge and materials. My MPC Mini++ cable (PFO Brutus Award winner) is a 9 gauge cable. The standard Mac power cable is 18 gauge. Why? Because it took that gauge in a double helix configuration to get the inductance extremely low and the capacitance high, which is the impedance mix that the SMPC likes for optimum performance.
The TWL cables are built using terrific materials, advanced geometries and voiced for different applications. Best part is that along with the cables you get a business owner that has his customer's satisfaction as his highest priority. Very seldom does anyone take advantage of the 30-day return policy. Highly recommended!